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SEMEN TESTBULL BREEDING SOUNDNESS
EXAMINATIONB.B.S.E.
• 50 NORMAL, CYCLING, DISEASE FREE COWS
• 60% (In 3 weeks) and 90% (In 9 weeks) PREGNANT AT 42 DAYS
FERTILE
COW BULL
MULTIFACTORIAL
COWCYCLING • Nutrition
• Days since calving• Age of puberty
DISEASE FREE
• Pestivirus• Vibriosis• Trichmoniasis• Leptrospirosis• ???????????
HEALTHY UTERINE TRACT
• Infection• Scaring• Cystic Ovary• Freemartin
BULLSOUND
SERVING ABILITY • Mount• Penile Erection and
extension• Intromission (seeking)• Thrust
DISEASE FREE • Pestivirus• Vibriosis• Trichomoniasis• ??????????
SPERMATOZOA • Numbers• Motility• Morphology
COMPONENTSBULL BREEDING SOUNDNESS EXAMINATION
1. PHYSICAL EXAM
2. EXAMINATION OF
REPRODUCTIVE TRACT
3. SCROTAL CIRCUMFERANCE
4. SEMEN COLLECTION AND
EXAMINATION
5. SERVING ABILITY / CAPACITY
• GENERAL HEALTH
• WALKING ABILITY
• NORMAL FEET
• NORMAL LEG
STRUCTURE
PHYSICAL EXAM
• PENIS & PREPUCE
• SCROTUM & TESTICLES
• SEMINAL VESICLES
REPRODUCTIVE TRACT
PENIS AND PREPUCE
SCROTUM & TESTICLES
• TESTICULAR VOLUME OR WEIGHT
• DAILY SPERM PRODUCTION (Cells / gm)
• BIGGER NOT NECESSARILY BETTER BUT THERE IS A MINIMUM– Bos Taurus - Minimum 34 cm @ 2 yrs (2:1 L:W)– Bos Indicus - Minimum 30 cm @ 2 yrs (2.4:1 L:W)
SCROTAL CIRCUMFERENCE
SCROTAL CIRCUMFERENCE
• ARTIFICIAL VIRGINA (AV)
SEMEN COLLECTION
• ELECTRO-EJACULATION (EJ)
• MASSAGE
• GROSS MOTILITY (x100) - Score 1 to 5
(Concentration, % Motile & Velocity)
• PROGRESSIVE MOTILITY (x200) 0 – 30% Fail
30 – 60% Multi-Sire
> 60% Pass
• MORPHOLOGY (x1000) 0 - 50% Fail
50 - 70% Qualified Pass
(QF)
> 70% Pass
SEMEN EXAMINATION
SEMEN SCORE & MORPHOLOGY
SERVING ABILITY
SERVING CAPACITY
1. KNOCKS OUT WORST BULLS
2. DOES NOT RANK BULLS
3. HIGH PROBABILITY OF BEING FERTILE - NOW
4. NOT A GUARANTEE, BUT A GOOD INDICATION OF POTENTIAL
ENDRESULT
THANK YOU