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World Journal of Biology and Medical Sciences Published by Society for Advancement of Science®

ISSN 2349-0063 (Online/Electronic) Volume 2, Issue- 4, 133-150, October to December, 2015

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RESEARCH PAPER

Received: 20/09/2015 Revised: 27/09/2015 Accepted: 01/10/2015

Study on Rumen and Reticulum Foreign Body in Slaughtered Cattle at Gondar Elfora

Abattoir Kassahun Berrie, Erkihun Tadesse, *Berihun Mossie and

*Bewuketu Anteneh Addis Ababa University, College of Veterinary Medicine and Agriculture, P.O. Box: 34,

Debre Zeit, Ethiopia *Wollo University, Faculty of Veterinary Medicine, Dessie, Ethiopia

ABSTRACT A cross-sectional study was conducted from October, 2014 to April, 2015 at Gondar Elfora Abattoir, North Gondar zone, Amhara National Regional State, with the objectives of to assess the prevalence of rumen and reticulum foreign bodies, identify types of foreign bodies and associated risk factors for the occurrences of foreign bodies. Both antemortem and postmortem examinations were employed to examine the live animal and for the recovery of foreign body from rumen and reticulum after slaughter respectively. The study animals were selected by using simple random sampling method from the total slaughtered animals. From the total of 500 male animals examined, 74 (14.8%) were found positive for the occurrence of indigestible foreign bodies in rumen and reticulum.

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From 446local breed examined 55 (12.33%) and 54 cross breed examined 19 (35.18%) were found Positive respectively. The types of foreign bodies were detected nails, wires, plastics, leathers, clothes and ropes. From these plastics35 (42.3%), rope21 (28.4%), cloth18 (24.3%), nail16 (21.6%), wire5 (6.7%) and leather 2(2.7%) were more frequently encountered of the positive cases respectively. Prevalence of foreign body occurrence recorded comparing with in age young 5 (4.95%), adult 37 (13.5%) and old32 (25.6%) from the total examined animals 101, 274and 125respectively. While the prevalence rate recorded within association of body condition were poor 29(39.72%), medium32 (11.47%) andgood13 (8.7%) from total examined animal73, 279 and 148respectively, Poor body condition and old animals were more affected. From the total prevalence74 (14.8%), 51(68.9%), 14(18.9%) and9 (12.2%) were observed fromrumen, reticulum and rumen and reticulum respectively and rumen harbored mostly plastic materials while reticulum was the major site for the retention of metallic objects. These aforementioned factors are considered as potential risk factors and found highly significantly associated (p < 0.05) with the occurrence of foreign bodies. In conclusion, detection of the foreign bodies in fore stomach suggested as health risk to ruminants and contributes a lot for reduced production. Therefore, appropriate solid waste disposal system need to implement in the study area to prevent health risk of ruminants and also to protect the environment. Key words: Abattoir, Cattle, Foreign body, Gondar, Reticulum and Rumen.

INTRODUCTION Ethiopian’s livestock population is often said to be the largest in African. Excluding the Afar and Somali regions there were approximately 45.57 million cattle, 26.1 million sheep, 21.7 million goats, 2.1 million horses and mules, 5.6 million donkeys, 1 million camel and 39.6 million poultry. For the later two regions, estimated numbers vary greatly between conventional and aerial censuses, but total less than 15% of the non nomadic regions (CSA, 2009). Ethiopia has great potential for increased livestock production, both for local use and for export. However, expansion was constrained by inadequate nutrition, disease, lack of support services and inadequate information on how to improve animal breeding, marketing and processing. Thus, the country is not utilizing this huge potential livestock resource and an improvement in this sector. Therefore, has the potential to contribute significantly to national income and to the welfare of the majority of rural families. The high concentration of

animals in the high lands, together with the fact that cattle are often kept for status, reducing the economic potential of Ethiopia livestock (CSA, 2009). Cattle play significant contribution in Ethiopian economy as source of meat, milk, drought prowler, income and foreign exchange. However, as other livestock in the country their contribution is below their expected potential due to prevalent livestock diseases, poor management system and poor genetic performance (Abebe, 1995). Gastrointestinal foreign bodies are among the most common surgical emergency in veterinary medicine. Cattle are more susceptible to foreign body syndrome than small ruminants because they do not use their lips for prehension and are more likely to eat chopped feed; lack of oral discrimination in cattle may lead to ingestion of foreign bodies would be rejected by other species (Desiyeand Mersha, 2012). Traumatic reticuloperitonitis, or TRP, is a relatively common disease in adult cattle caused by the ingestion and migration of a foreign body in the reticulum. The typical


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foreign body is a metallic object, such as a piece of wire or a nail, often greater than 2.5 cm in length. The majority of affected cattle (87%) are dairy cattle and 93% are older than 2 years of age. It has been hypothesized that dairy cattle are more commonly affected than beef cattle since they are more likely to be fed a chopped feed, such as silage or hay (Hailant et al., 1996).A large number of adult dairy cattle have metallic foreign bodies in their reticulum without signs of clinical disease. It is likely that a predisposing factor in otherwise normal cows, such as tenesmus or a gravid uterus, causes migration of the foreign body into the reticular wall (Rebhum et al., 1995). Ingestion of foreign body in cattle is result a condition of great economic importance and causes severe loss of production and high mortality rate. The ingestion of foreign body is mainly related with nutritional deficiencies and feeding management and cause various problem in different organ of the animal, mainly in rumen and reticulum. The problem that are caused vary with the duration that the foreign body has been present, the location of the foreign body, the degree of obstruction that is caused as well as problems associated with the material of the foreign body. Ruminant are notorious for ingestion of foreign bodies. The disease of rumen and reticulum are great economic importance because of severe losses on productivity of the animals sometimes leading to the death of the animals (Radostits et al., 2007). Entrance and migration of foreign bodies through the body tissues lead to many complications that differ according to the nature of the foreign body and the way of its entrance in to the tissues. TRP relatively common disease in cattle caused by the ingestion of foreign bodies in the reticulum swallowed metallic objects such as nail or pieces of wire fall directly on the reticulum or pass into the

rumen and subsequently carried over the rumeno-reticular folds in to the cranioventral part of the reticulum (Jones et al., 1997). Non metallic foreign bodies in the reticulo-rumen cause recurrent rumen tympani in adult dairy cattle, over a period of time, these materials, form large tight balls inside the rumen leading to anorexia decreased production and progressive loss of body condition (Jafarazadeh et al., 2004). The presences of foreign bodies in the rumen and reticulum also hamper the absorption of volatile fatty acids (VFA) and consequently reduction in the rate of animal fattening. The perforation of the wall of the reticulum allows leakage of in gesta and bacteria which contaminates the peritoneal cavity, resulting in local or diffuse peritonitis is the swallowed objects can also penetrate pleural cavity causing pleuritis and pneumonitis and into the pericardial sac causing pericarditis (Caudo et al., 2004). The condition is serious in our country usually in urban and peri-urban areas where extensive building are carried out and proper plastic material disposal is no conditioned and so thrown on roads and near the fence or anywhere and that is way our dairy cattle are dying mainly associated with foreign bodies (Ramaswamy and Sharama, 2011). In Ethiopian formation regarding the magnitude and occurrence of fore stomach foreign bodies is very limited. The fact that rumen impaction by these foreign bodies is mainly a symptomatic in nature and only diagnosed in live animals if the material is accumulated in large amount and thus, it can be adequately studied in abattoirs (Desiye and Mersha, 2012). Therefore the objectives of this study were: To assess the prevalence of rumen and reticulum foreign bodies in cattle slaughtered at Gondar Elfora Abattoir,


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To identify the type of rumen and reticulum foreign bodies and to study the risk factors associated with the ingestion of those foreign bodies in cattle. LITERATURE REVIEW Etiology Swallowed metallic object such as nails or piece of wires, fall directly into the reticulum or pass in to the rumen and are subsequently carried over the rumen reticular folds into the carnio ventral part of the reticulum. Thereticulo-omasal orifices elevated above the floor, which tends to retain heavy object in the reticulum and honey comb like reticulo mucosal surface traps sharp object (Radostits et al., 2007). Compression of rumino reticulum by the uterus in late pregnancy, starting during parturition and mounting during estrus increases likely hood of an initial penetration of reticulum and may also disrupt adhesion caused by earlier penetration. Perforation of the wall of reticulum allows leakage of ingesta and bacteria which contaminates the peritoneal cavity (Kahn, 2005). In addition vigorous contraction of reticulum aided by the movement of diaphragm make the thin potential foreign body to penetrate through the reticular wall at different sites and in varying direction (Sharma and Pankaj, 2006). Rumen tympany due to metallic or nonmetallic (mostly polythene material) foreign bodies are among the most common cause of gastrointestinal disorders in ruminants (Radostatis et al., 1994). Plastics can be termed as wide range of chemical materials either synthetic or semi synthetic solid materials like polyethylene, polyvinyl chloride and polystyrene largely used in plastics manufacturing industry, which pose a threat to livestock and environment. Plastic garbage continues to increase in modern world, more concentrated in cities and towns (Ramaswamy and Sharama, 2011).

Types of Foreign Body Ingested foreign body by buffaloes and cattle are divided in to two main groups’ foreign body of metallic origin and foreign body of non metallic origin. Foreign bodies recovered by trans-ruminal exploration during ruminotomy can be classified in to penetrating (nail and wires and non penetrating foreign body (polythene bags plastic material, leather, rope and raber (Vanitha et al., 2010). Epidemiology Occurrences Cattle are more likely to ingest foreign bodies than small ruminant since they don’t use their lips for prehension and are more likely to eat a chopped feed (Jones et al., 1997).The majority of affected cattle (87%) are dairy cattle and93% are older than two years of age (Kahn, 2005). It is hypothesized that dairy cattle are more commonly affected than beef cattle since they are more likely to feed a chopped feed such as silage or hay. The disease is usually sporadic but out breaks has occurred when sources of wire have become mixed in to feed supplies. Adult dairy cattle are most commonly affected because of their more frequently exposure (Hailat et al., 1996). Risk factor The condition tends to be more common during drought because animals are grazing closer to the ground or are being fed harvested material that is contaminated with foreign objects, such as short ends of baling wire (Mohammad et al., 2006). According to Schipper (2000), there are a number of influencing factors. These include remodeling of livestock housing, careless handling of baling wires, pins, feed sack bags and wires, using old buildings sites for hay fields, often occur in female shortly after calving, often occur in male shortly after or during extensive uses for breeding, rapid industrialization and rapid


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civilization has resulted in increased incidence of the Foreign Body Syndrome, due to spread of metallic and non-metallic garbage and waste and thus more incidence of these cases are reported in highly industrialized and urbanized areas. Due to intensive system of livestock rearing for maximal production, high-rise in deficiency state especially of calcium, phosphorus and micro-minerals, has resulted in perverted appetite, which is one important factor for intentional ingestion of foreign objects. Pathogenesis Lack of oral discrimination by cattle leads to the ingestion of foreign bodies that would be rejected by other species. Swallowed foreign body may lodge in the upper esophagus and causes obstruction or in the esophageal groove and cause vomiting; but most instances they pass to the reticulum (Jones et al., 1997). If the reticular wall is injured without penetration to the serous surfaces no detectable illness occur and the foreign body may remain fixed most perforation occurs in the lower part of the cranial wall of reticulum but some occur laterally in the direction of the spleen and medially towards the liver. In the sites for long period and gradually be corroded away (Radostitis et al., 2007). The initial reaction to perforation is one of acute local peritonitis and depending on the severity of the local peritonitis. The ventral aspects of the reticulum becomes adherent to varying degrees to the abdominal floor and diaphragm. This result in decreased reticular motility and reticular abscess formation which is a common complication and may be located between the reticulum and the ventral body wall, between the reticulum and the right thoracic wall and between the reticulum and the spleen (Andrews et al., 2003). Spread of the inflammation causing generalized or diffuse peritonitis may

occur in the cows that calves at time of perforation and in cattle that are forced to exercise. During the initial penetration of the reticulum, the foreign body may penetrate beyond the peritoneal cavity and into the pericardial sacks or pleural. This may occur commonly in cows in advanced pregnancy than in non- pregnant cows this is because of gravid uterus, although it is uncertain (Semieka, 2010). The object can penetrate the diaphragm and enter the thoracic cavity (causing pleuritis and sometimes pulmonary abscessation) and the pericardial sac (causing pericarditis, sometimes followed by myocarditis). Occasionally, the liver or spleen may be pierced and become infected, resulting in abscessation, or septicemia can develop (Gokce et al., 2007). Rumen impaction is a condition which results from the accumulation of the indigestible materials in the rumen which interferes with the flow of ingesta leading to distention of the rumen and passing of scanty or feces (Abdulahi et al., 1984). Clinicalrumen indigestible foreign bodies impaction is characterized bycomplete cessation of rumination impacted rumen atony and reduced rumen motility, hard pellet mucous dung and in appetence (Radostits et al., 2007). Clinical and Pathological Findings The initial penetration of the reticulum is characteristically, the onset is sudden with complete anorexia, rumino reticular atony and marked drop in milk yield usually to about one third or less of the previous milking (Andrews et al., 2003).The animal is reluctant to move and does so slowly walking; particularly downhill is often accompanied by grunting. The heart rate is normal or slightly increased, and respiration is usually shallow and rapid. Initially, the cow exhibits an arched back; an anxious expression; a reluctance to move; and an uneasy, careful gait. Forced


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sudden movements as well as defecating, urinating, lying down, getting up, and stepping over barriers may be accompanied by groaning. A grunt may be elicited by applying pressure to the xiphoid or by firmly pinching the withers, which causes extension of the thorax and lower abdomen (Misk et al., 1999). Most animals prefer to remain standing for long periods and lie down with great care and arching of the back occurs in about 50% of cases, along with the appearances of tenseness of the back and the abdominal muscles so that the animal appears gaunt or “tucked up”. Defecation and urination cause pain and the acts are performed infrequently and usually with grunting. This result in constipation scant feces and in some cases retention of urine (Radostitis et al., 2007). Rumination is absent and reticular and rumen movements are markedly depressed and usually absent and pain can be elicited by deep palpation of the abdominal wall just caudal to the sternum (Gokce et al., 2007). In chronic peritonitis, the appetite and milk yield does not return to normal after prolonged therapy with antimicrobials. The body condition is poor, the faces are reduced in quantity and there is an increase in undigested particles. A persistent slightly elevated temperature is supportive evidences of the presences of a chronic inflammatory lesion. Clinical signs associated with chronicperitonitis include anorexia, unthriftiness, decreased milk production, rumen hypomotility and change in manure consistency (Cavedo et al., 2004). Localized traumatic reticulo peritonitis is characterized by varying degrees of locally extensive fibrinous adhesions between the cranioventral and the ventral aspects of the reticulum. Adhesions and multiple abscesses may extend to either sides of the reticulum involving the spleen, omasum, liver, abomasums and ventral

aspects of rumen. Large quantities of turbid foul-smelling fluid containing clots of fibrin are usually present (Radostitis et al., 2007). Complication Reticular abscesses are a common complication of TRP. Also, if the foreign body migrates through the diaphragm and into the pericardium, it can result in septic pericarditis and congestive heart failure (Krishnamurthy et al., 1998). Less common complications include reticular fistulation, vagal indigestion, diaphragmatic hernia, traumatic pleurisy, pneumonia, rupture of gastroepiploic artery, diaphragmatic abscess, formation of abscess on the lateral and ventral wall of abdomen in which foreign body lodges (Rebhum et al., 1995).The acute local peritonitis causes immediate cessation of ruminal movements, however, persistent ruminal atony or irregular motility with gradual onset of bilateral abdominaldistension, in appetence and decreased milk production may ensue clinically. This is referred to as vagus indigestion; it may also be sequel to abomasal displacement. Mechanical impairment of reticular motility and esophageal groove dysfunction as a result of reticular adhesion is probably the most important causes of syndromes (Latimer et al., 2003). Diagnosis Metal detection Metal detectors were used at one time to aid in the diagnosis of traumatic reticuloperitonitis. Ferrous metallic foreign bodies can be detected with metal detectors but the instruments are of limited uses because most normal dairy cows are positive for metal over the reticular areas. An electronic metallic detector may identify metal object in the reticulum but does not distinguish between perforating and non\ perforating foreign body (Rahel, 2011).


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Laparoscopy Laparoscopy in cattle is a promising tool for clinical diagnosis and treatment. The application of this tool during abdominal explorations biopsies allows the avoidance of invasive and useless surgical interventions and even diagnosis and prognosis of certain conditions (Sojka, 1990). Ultrasonography and radiography In contrast to radiography, ultra sonography provides more precise information about the contour of the reticulum and reticular motility (Radostits et al., 2007). In cattle with TRP ultra sonography can be used to identify morphological changes in region of cranial, ventral or caudal reticular wall. Radiography obtained allows the identification of radiopaque bodies and gas/ fluid interfaces typical of an intrabdominal abscess. The drawback of this technique is that not all heavy sharp objects will have sufficient density toshow on an x-ray (Rahel, 2011). Sojka (1990) diagnosed the rumen impaction due to plastic material in a goat by B mode ultrasonography. Wither Pinch test Wither test by pinching withers to cause depression of back and eliciting grunt is effective diagnostic tool. Tympanic sounds usually heard 2-3 seconds before primary ruminal contraction can be felt through the left flank (Sharma and Pankaj, 2006). The foreign body syndrome can be diagnosed by palpation on both sides ofabdomen and with a stethoscope for evidence of grunt (Singh, 2005). Treatment In general, two methods of treatments are used for TRP: conservatives (medical) treatment and rumenotomy (Radostatis et al., 1994). Conservative (medical) therapy Conservative treatment comprises immunization of the animal by

administration of antimicrobial for the inflammation for 3-5days (Radostatis et al., 1994). A magnet administered orally falls into the cranial sac of the rumen, but normal ruminal contraction usually brings the magnet to the reticulum and foreign bodies still partially in the lumen of the reticulum that have injured the reticular wall are attracted to and fixed to the magnets, thus preventing their migration from continuing and most times returning the foreign body into the lumen of reticulum (Roman and Hiwot, 2010) Rumenotomy Rumenotomy in cattle is a routine procedure for treatment and diagnostic purposes. Surgical removal of the foreign body through the rumenotomy incision is widely used as a primary treatment. The recovery rate varies depending on when the surgery is done relative to the time of initial penetration (Ramaswamy and Sharama, 2011). Prevention Prevention of hard ware disease in dairy cattle involves around managing animal feed and animal grazing areas so they avoid ingestion of heavy sharp object. Magnets should be installed in feed mills and for age harvesting equipments (baler). Bovine eating habits cannot be altered and prevention of sharp objects in the feed is not entirely possible, so prophylactic insertion of magnets at the early ages is a good idea (Radostitis et al., 2007). Eliminating sources of sharp foreign objects in the feed supply prevents TRP. Installation of large magnets on feed handing equipment and prophylactic administration of the fore stomach magnets to all animal at 6to8 month of ages prevent almost all cases caused by magnetizable object (Smith, 2009). Prevention of TRP is preferred to either conservative medical treatment or surgery (Eddy, 1992). Although one source does not believe magnets are an effective


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preventative measure the majority of clinicians agree that all cattle over one year of age should have a prophylactic magnet placed in the reticulum (Ducharme and Fubini, 2004).Cattle should be kept away from construction sites and crop fields should be monitored for metal debris. Also, processed feed can be passed over magnets to recover any magnetic foreign bodies prior to being fed to cattle (Buczinski, 2010).

MATERIALS AND METHODS Study Area The study was conducted at Gondar Elfora Abattoir, North Gondar zone, Amhara National Regional State. The Gondar town is located at 750 Km from Addis Ababa at an elevation of 2200 m above sea level. The city situated between a latitude and longitude of 12°36′N and 33°28′E. Rain fall varies from 880-1172mm with the average annual temperature of 19.7°C. The area is characterized by two seasons, the wet season from June to September and dry season from October to May. The farming system in the area is mixed type (crop-livestock production). The livestock population in the area comprises of cattle, 200,135, goat 81,000, sheep 70,000, horse 9,000 and donkey, 12,000 (WARD, 2012). Study Animals The study was conducted on 500 male apparently healthy slaughtered cattle at Gondar Elfora Abattoir from October, 2014 to April, 2015. The animals were both local and cross breed, which are originated from various localities. It was difficult to precisely indicate the geographical origin of all animals slaughtered at Gondar Elfora Abattoir and relate the findings to a particular locality. Nevertheless, attempts made in this regard revealed that majority of them were bought from nearby markets. Age, body condition and breed were considered a risk factor for occurrence of foreign bodies. During the study time the

animals were categorize into three based on age ≤5 year(young) , 5-10year(adult) and ≥10 year (old) and also grouped based on body condition as poor, medium and good (Desiye and Mersha, 2012). Age and body condition was estimated based on dentition pattern (annex2) and body condition score (annex3) respectively. Out of a total of 1911cattle slaughtered at Gondar Elfora Abattoir during the study period, 500 animals were selected and examined by using simple random sampling method. Study Design A cross sectional study was conducted from October, 2014 to April, 2015to assess theprevalence of the rumen and reticulum foreign body’s and to identify the types of foreign bodies and theirassociated risk factors. Sampling Technique and Sample Size Determination Simple random sampling technique was employed to select the study animals and rumen and reticulum of individual animals were examined. The total number of cattle required for the study was calculated based on the formula given by Thrusfield (2005). By rule of thumb where there is no information for an area, it is possible to take 50% prevalence. In this study 50% prevalence with 5% desired level of precision and 95% of confidence interval are used to calculate the sample size using the following formula. n= (1.96)pexpected(1_pexpected)

d2

Where: n = required sample size Pexp = expected prevalence d = desired absolute precision Therefore, the minimum sample size of the present study was 384. However, to maximize the precision 500 animals were examined.


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Study Methodology Antemortem examination: Antemortem examination on individual animals was done for assessment of age, breed and body condition. Age was categorized into young, adult and old based on dentition pattern and body condition also poor, medium and good with breed differentiation (cross and local). Each animal selected for the study was further indentified by providing a unique identification number that could be used for both ante-mortem and post-mortem examinations of the animal and each animals mark for the identification by writing a code on its gluetal muscle by using ink. Postmortem examination: In the postmortem examination rumen and reticulum was examined immediately after slaughter in the evisceration stage, the stomach was carefully removed from the abdominal cavity and rumen and reticulum were thoroughly examined by visual inspection and palpation with open and explore for the prevalence of any foreign non dietary material by visualization and palpation. All the contents were examined thoroughly for the presence of foreign bodies. Any foreign bodies were obtained during inspection washed with water to remove adhering feed material and identify type of foreign bodies. When the finding was positive, the location and type of the foreign bodies was recorded otherwise recorded as negative in postmortem record sheet. Data Analysis: The data obtained was coded in Microsoft excel and subjected to descriptive statistics and chisquare in order to assess the magnitude of the difference of comparable variables using SPSS version 20.0 software. Pearson chi square (x2) test was employed to assess the existence of association between

prevalence of the foreign bodies and different potential risk factors considered. For (x2) test, p- value < 0.05 were considered significant where as p-value > 0.05 considered non significant. Descriptive statistical analysis such as table was used to summarize and present the data collected. The total prevalence of rumen and reticulum foreign bodies was calculated as percentage by dividing total number of positive cattle for foreign bodies to the total number of cattle examined.

RESULT Occurrence: From the total of 500 cattle’s examined for the presences of any foreign bodies in their rumen and reticulum, 14.8% (74/500) of them were found positive. From 74 positive cases of foreign body, 51(68.9%) were occurred in rumen while 14 (18.9%) in reticulum and 9 (12.2%) in rumen and reticulum. The types of foreign bodies were detected nails, wires, plastics, leathers, clothes and ropes. From this plastics35 (42.3%), rope21 (28.4%), cloth18 (24.3%), nail16 (21.6%), wire5 (6.7%) and leather 2(2.7%) were more frequently encountered of the positive cases respectively. Prevalence of Foreign Body Regarding to Age: The Study animals were grouped into three as (≤5 years), (5-10 years) and (≥ 10 years), from 101, 274 and 125animals were examined with age in these age groups,5 (4.95%), 37 (13.5%) and 32(25.6%) were found positive, respectively. Foreign bodies were more frequently encountered in old animals than other two groups. The statically analysis also showed that there exist highly significant differences among the three age groups (p=0.000) which is P < 0.05 in the occurrences of foreign bodies as shows in (Table 1).


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Table 1 A. Prevalence of rumen and reticulum foreign bodies in male cattle slaughtered at Gondar Elfora abattoir in association with age.

Age Result Total Prevalence of foreign body with in age

Positive Negative

≤5 year 5 96 101 4.95%

5-10 year 37 237 274 13.5%

≥10 year 32 93 125 25.6%

Total 74 426 500 14.8%

x2=19.698;p=0.00 Table 1 B. Prevalence and frequency of rumen and reticulum foreign bodies in male cattle

slaughtered at Gondar Elfora abattoir in association with age

Foreign body Age Total

≤5 year 5-10 year ≥10 year

Nail 1 (1%) 7 (2.6%) 1 (0.8%) 9

Wire - 3 (1.1%) - 3

Plastic 1(1%) 10 (3.6%) 12(9.6%) 23

Leather - 1(0.4%) - 1

Cloth - 3(1.1%) 6(4.8%) 9

Rope 2(2%) 8(2.9) - 10

Wire and cloth - - 1(0.8%) 1

Plastic and cloth - - 3(2.4%) 3

Nail and leather - - 1(0.8%) 1

Plastic and rope - 1(0.4%) 2(0.4%) 3

Cloth and rope - - 1(0.8%) 1

Wire and rope - - 1(0.8%) 1

Plastic, cloth and rope - 1(0.4%) 2(1.6%) 3

Nail and plastic - 1(0.4%) 1(0.8%) 2

Nail, plastic and rope 1(1%) - 1(0.8%) 2

Nail, plastic and cloth - 1(0.4%) - 1

Nail and rope - 1(0.4%) - 1

No foreign body 96(95%) 237(86.5%) 93(74.4%) 476(85.2%)

Total 101 274 125 500

x2=62.741;p=0.000 Prevalence of Foreign Body with Regard to Body Condition Score From total of 500 cattle 73,279 and 148 animals were examined with poor, medium and good body condition, 29 (39.72%), 32(11.47%) and 13 (8.7%) were

positive for foreign body, respectively. The statically analysis also showed that there exist highly significant differences among the three body condition score groups (p=0.000) which is P <0.05 in the occurrences of foreign bodies (Table-2).


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Table 2 A. Prevalence of rumen and reticulum foreign bodies in male cattle slaughtered at Gondar Elfora abattoir in association with body condition.

Body condition Result Total Prevalence of foreign body with in body condition

Positive Negative

Poor 29 44 73 39.72%

Medium 32 247 279 11.47%

Good 13 135 148 8.7%

Total 74 426 426 14.8%

x2=24.671; p=0.000 Table 2 B. Prevalence and frequency of rumen and reticulum foreign bodies in male cattle

slaughtered at Gondar Elfora abattoir in association with body condition.

Foreign body Body condition score

Poor Medium Good Total

Nail 3(4.1%) 6(2.2%) - 9

Wire - 2(0.7%) 1(0.7%) 3

Plastic 9(12.3%) 9(3.2%) 5(3.4%) 23

Leather 1(1.4%) - - 1

Cloth 4(5.5%) 3(2.2%) 2(1.4%) 9

Rope 1(1.4%) 6(2.2%) 3(2%) 10

Wire and cloth 1(1.4%) - - 1

Plastic and cloth 2(2.7%) 1(0.4%) - 3

Nail and leather - - 1(0.7%) 1

Plastic and rope 2(2.7%) 1(0.4%) - 3

Cloth and rope - - 1(0.7%) 1

Wire and rope 1(1.4%) - - 1

Plastic, cloth and rope 1(1.4%) 2(0.7%) - 3

Nail and plastic 2(2.7%) - - 2

Nail, plastic and rope 1(1.4%) 1(0.4%) - 2

Nail, plastic and cloth 1(1.4%) - - 1

Nail and rope - 1(0.4%) - 1

No foreign body 44 247 135 426

Total 73 279 148 500

x2=87.699;p=0.000 Prevalence of Foreign Body Regard with Breed From the total 500 animals 446 local breeds and 54 cross breeds were examined and 55(12.33%) and 19(35.18%) of foreign bodies were detected in both breeds respectively. So the prevalence of

rumen and reticulum foreign bodies was higher in cross breed cattle. The statically analysis also showed that there exist highly significant differences among different breed (p=0.000) which is P < 0.05 in the occurrences of foreign bodies (Table-3).


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Table 3 A. Prevalence of rumen and reticulum foreign bodies in male cattle slaughtered at Gondar Elfora abattoir in association with breed.

Breed Result Total Prevalence of foreign body with in breed

Positive Negative

Local 55 391 446 12.33%

Cross 19 35 54 35.18%

Total 74 426 500 14.8%

x2=19.95; p=0.000 Table 3 B. Prevalence and frequency of rumen and reticulum foreign bodies in male cattle

slaughtered at Gondar Elfora abattoir in association with breed.

Foreign body Breed Total

Cross Local

Nail 4(7.4%) 5(1.1%) 9

Wire 2(3.7%) 1(0.2%) 3

Plastic 1(1.9%) 22(4.9%) 23

Leather - 1(0.2%) 1

Cloth 1(0.9%) 8(1.8%) 9

Rope 6(11.1%) 4(0.9%) 10

Wire and cloth - 1(0.2%) 1

Plastic and cloth - 3(0.7%) 3

Nail and leather 1(1.9%) - 1

Plastic and rope 1(1.9%) 2(0.4%) 3

Cloth and rope - 1(0.2%) 1

Wire and rope - 1(0.1%) 1

Plastic, cloth and rope - 3(0.7%) 3

Nail and plastic 1(1.9%) 1(0.2%) 2

Nail, plastic and rope 1(1.9%) 1(0.2%) 2

Nail, plastic and cloth - 1(0.2%) 1

Nail and rope 1(1.9%) - 1

No foreign body 35(64.8%) 391(87.7%) 426

Total 54 446 500

x2=75.18;p=0.000 Prevalence of Foreign Bodies with Regard to Location Site From total 74 positive cases of foreign body, 51(68.9%) were occurred in rumen while 14(18.9%) in reticulum and 9(12.2%) in rumen and reticulum and rumen harbored mostly plastic materials while

reticulum was the major site for the retention of metallic objects. The statically analysis also showed that there exist highly significant differences among different stomach compartment (p=0.000) which is P< 0.05 in the occurrences of foreign bodies (Table-4).


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Table 4. Frequency of occurrence of rumen and reticulum foreign body in male cattle slaughtered at Gondar Elfora abattoir in association with related to location site.

Foreign body Location site

Total

No Rumen Reticulum Rumen and Reticulum

Nail - - 9(64.9%) - 9

Wire - - 3(21.4%) - 3

Plastic - 21(41.2%) 2(14.3%) - 23

Leather - 1(2%) - - 1

Cloth - 9(17.6%) - - 9

Rope - 10(19.6%0 - - 10

Wire and cloth - - - 1(11.1%) 1

Plastic and cloth - 3(5.9%) - - 3

Nail and leather - - - 1(11.1%) 1

Plastic and rope - 3(5.9%) - - 3

Cloth and rope - 1(2%) - - 1

Wire and rope - - - 1(11.1%) 1

Plastic, cloth and rope - 3(5.9%) - - 3

Nail and plastic - - - 2(22.2%) 2

Nail, plastic and rope - - - 2(22.2%) 1

Nail, plastic and cloth - - - 1(11.1%) 1

Nail and rope - - - 1(11.1%) 1

No foreign body 426 - - - 426

Total 426 51 14 9 500

x2=29.95; p=0.000

DISCUSSIONS Ingestion of indigestible foreign materials byruminants is a common worldwide problem previously reported from Nigeria (Remi-Adewumi et al., 2004, Igbokwe et al., 2003), Jordan (Hailat et al., 1998) and Sudan (Ghurashi et al., 2009; Bakhiet, 2008; Mohammed et al., 2006). This study revealed an overall prevalence of 14.8% (n= 74) of rumen and reticulum foreign body in male cattle slaughtered at Gondar Elfora abattoir. The present prevalence rate of foreign bodies is almost similar with Desiye and Mersha (2012) 13.22 % of rumen and reticulum foreign body in cattle slaughtered at Jimma Municipal Abattoir and slightly lower than the report of Rahel (2011) 17.07% of prevalence of fore stomach foreign bodies in Hawasa

Municipal Abattoir, Ethiopia and Dawit et.al (2012) who conducted on cattle at Hirna municipal abattoir from November 2011 to March 2012 also report from the total of 384 cattle examined, 92 (23.9%) were found positive for different types of foreign bodies in their rumen and/or reticulum. Similarly, significantly lower than the higher prevalence of (77.41%) was reported by (Ismael et al., 2007) of adult dairy cattle cases having indigestible foreign bodies suffering from recurrent rumen tympani in Jordan and also Jagos (1969) reported higher over all prevalence of foreign body in adult cows (51%) where63% and 15% of the foreign bodies was observed in rumen and reticulum, respectively. The variation in the prevalence of studies could due to


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differences in the waste management systems between the study areas. Moreover, the time of the study also could play a role for the differences where in recent times the rate of intensification of animal management is increasing and as a result the probability of animals to be exposed to foreign materials might be declined as the animals are staying in a limited confinement for longer time. The highest frequency of occurrence of rumen and reticulum foreign bodies were detected in animal’s ≥10 year (25.6%) followed by5-10 years (13.5%) and ≤5 years (4.95%) age group of animals. Highest prevalence (25.6%) of foreign bodies was detected in cattle greater than 10 year than other age group. This finding is in agreement with Desiye and Mersha (2012) who recover (81.25%) of foreign bodies in cattle greater than 10 year age and also significant prevalence rate of 59.14%was reported in old achai cattle by (Hailat et al., 1998). Rahel (2011) also reported (17.85%) of the animals had higher frequency of foreign bodies in rumen and reticulum in the old age. Radostitis et al. (2007) reported old dairy cattle are the most commonly affected group. Ismae et al. (2007) from Jordan also reported the metallic foreign bodies were found in 10(32.25%) of the cows from medical records of 31 old dairy cows suffering from the recurrent rumen tympany. This might be associated with increase of exposure through life and many were found accumulate and lead the undead animals to be positive. The highest frequency of occurrence of rumen and reticulum foreign bodies were detected in these study animals of poor, medium and good body condition 39.72%, 11.4% and 8.7% respectively. The highest frequency of occurrence of rumen and reticulum foreign bodies was detected in poor body condition animals. These findings are in agreement with Desiye and

Mersha (2012) who found poor 72.72 % followed by medium 35.95% and good 7.33% body condition score animals. Rahel (2011) and Tesfaye et al (2012) also reported higher frequency of foreign body occurrence in animals having poor body condition than in good body conditioned animals. Poor body condition by itself might be due to the contribution of the foreign body that is the animal loss weight after it has been exposed or it might be due to the interference of foreign body with the absorption of volatile fatty acid (VFA) and thus causes reduced weight gain reported by (Rahel, 2011; ismael et al., 2007; Remi-Adewunmi et al., 2004). Hairball sometimes occur in ruminant in forestomachs and abomasums Maxie, (2007) and long period of time, these materials form large tight balls over inside the rumen leading to anorexia, decreased production and loss of body condition (Tyagi, and Singh, 1993) as such foreign bodies hinders the process of fermentation and mixing of contents leadings to poor body condition. In this study the prevalence was higher in the cross breed cattle (35.18%) than local breeds (12.33%). The findings agree with the work of Desiye and Mersha (2012) who found 70% in cross breed and 10.77% in local breed and Rahel (2011) who reported forestomach foreign bodies with the high prevalence of (58.82%) in crossbreeds. This might be associated with the level of body size which requires high demand of nutrition and hence increase exposure for foreign bodies. This study indicated that most foreign bodies occurred in the rumen 51(68.9%) than reticulum 14(18.9%) and rumen and reticulum 9(12.2%) from the total 74(14.8%) positive cases. This result agreed with Desiye and Mersha (2012) who reported that from 64 positive cases of foreign body, 49 (79.68%) was detected from rumen and Jagos (1969) reported


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higher over all prevalence of foreign body in adult cows (51%) where 63% and 15% of the foreign bodies was observed in rumen and reticulum, respectively. These results also agree with Remi-Adewunmi et al. (2004) who found 58.45% in rumen and 19.32 % in reticulum of Achai Cattle. The highest frequency of occurrence of rumen and reticulum foreign bodies was detected at rumen. This may be due to the fact that many ingested feed goes to the rumen. This study also indicated that Metallic foreign bodies were most frequently recovered from reticulum, while non metallic foreign bodies were detected from rumen. Radostits et al. (2007) reported that in industrialized countries, metallic foreign bodies present in the reticulum up to 90% of normal animals are in line with our findings but the metallic foreign bodies’ ingestion was more in war hit areas. The reason might be due to retention of these foreign bodies by the honey comb structure of the reticular mucosa and their heavy weight give chance to be attracted to the lumen of the reticulum due to gravitational attraction force of these heavy foreign bodies to the ventral part of the fore-stomach. The types of foreign bodies detected in this study were plastic, rope, leather, cloth, nail and wire. The result of this study indicated that plastics 35 (47.3%) were the most common observed foreign body followed by rope and cloth. This result agree with Desiye and Mersha (2012) reported that plastics were the most common observed 22 (34.37 %) of the total 64 positive cases. This may be due to improper disposal of plastics and other ingestible foreign materials with in plastics. Roman and Hiwot (2010), Hailat et al., (1998), Igbokwe et al. (2003) and Remi-Adewunmi et al. (2004) report plastics were the most common cause of rumen impaction found in 13% of the cases in the

rumen. Kahn et al., (1999) also reported that due to relatively large size, plastic materials are preferentially retained in rumen and at certain time may cause impaction of the rumen leading to death of animals. Ismail et al., (2007) also observed that the presence of large amounts of these materials in the reticulo-rumen, this may be due to the impaction of bodies such as plastic bags interfered with flow of ingesta leading to the distention of rumen and consequently impairs the digestion process. CONCLUSION AND RECOMENDATIONS

Ingestion of metallic and non- metallic foreign bodies is the most common problem encountered in cattle not only because of its mortality and morbidity but also it causes decrease in productivity. It is common in developing countries where the standard of animal management is unsatisfactory. Both poor body condition and cross breed cattle are the most affected groups compared to that of good body condition and local breed cattle respectively and also animals have ≥10 years were more affected. Hence, breed, age, and body condition score of animals are considered risk factors for the occurrence of foreign bodies. Therefore, degree of association is highly statistically significant (p<0.05) for the occurrence of foreign body. The types of foreign bodies detected in this study were plastic, rope, leather, cloth, nail and wire, plastics were the most common observed foreign body followed by rope and cloth. Most of the non metallic foreign bodies lodged in rumen while metallic foreign bodies lodged in reticulum. It was also summarized that the problem is very common in our country, Ethiopia and presents great economic impact. Thus based on the above conclusion the following recommendations are forwarded.


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Keeping cattle away from new construction site and keeping away from old and unclear grazing site. Awareness creation for animal owners should be done to avoid the risk of foreign body ingestion by their animals. Focus on the general population to reduce environmental pollution with any foreign body Since previous studies about foreign bodies in these areas are very few, further research should be made to emphasize the important of the problem and address the prevention and control measure.

ACKNOWLEDGMENTS Above all, I would like to praise the almighty God for the patience he gave me traverses this long journey of my educational career. I would like to express my grateful thanks sincere appreciation to my advisor Dr. Kassahun Tadesse for his patience, motivation, immense knowledge and devotion of his incalculable time in the correction of this DVM thesis I would like to thanks university of Gondar, School of Veterinary Medicine for provision of advice and necessary materials and my thanks also goes to Ato Bishawu who works at Gondar Elfora Abattoir especially at green offal area for his unreserved help. My deepest gratitude goes to my family for their unflagging love, constant financial aids and moral encouragement during the whole period of my school and university life. Finally, my deepest gratitude goes to all my friends who have been with me during the good and bad time in my campus life.

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Corresponding author: Erkihun Tadesse, Addis Ababa University, College of Veterinary Medicine and Agriculture, P.O. Box: 34, Debre Zeit, Ethiopia Email: [email protected]


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