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The Louisiana Forage-Based Bull Performance Test Program
J.E. DevillierArea Livestock Agent
East/West Feliciana Parishes
Objective
To evaluate the growth rate and other traits of bulls under cool-season forage conditions common to commercial beef production in the Gulf Coast region of the U.S.
Introduction
HistoryGuidelines
–Bulls–Health–Management
Results Summary
Bull Qualifications
Breed Registry
Ranch ID
Bull (s) above herd average
September 1 to March 31
Weaned 45 days prior to delivery
Structurally sound
Vaccinated
Health Requirements
Vaccinated---Lepto, Vibrio, Clostridials, BRD and Pasturella
Dewormed 3 weeks before delivery---lung worms
Free from pinkeye, warts, ringworm, mange, lice
Dehorned
Annual Ryegrass
“The Management”
Breeding Soundness Exam
Carcass Ultrasound
Number of Bulls 2004-06
Breed 2004 2005 2006 Total
Angus 10 23 20 53
Brangus 12 17 15 44
Charolais 20 10 2 32
Gelbray 7 10 14 31
Other 6 9 12 27
Total 55* 69 63* 187
Growth Trait Averages, 2004-06
Trait 2004 2005 2006
Initial weight (lb) 624 622 742*
Final weight (lb) 1088 1136 1098
Gain (lb) 464 514 353
ADG (lb) 3.10 3.21 2.71
Hip height (in) 51 53 51
Scrotal cir. (cm) 35.6 35.8 34.6
Disposition Sc 3.0 2.8 3.0
Carcass Trait Averages, 2004-06
Trait 2004 2005 2006
REA (in2) * 10.21 10.67
REA/cwt * 0.90 0.98
Fat thickness (in) * 0.13 0.10
% IMF * 2.03 1.54
Summary
Evaluate under commercial situation
Opportunity for producers with small herds
Cooperation between state agencies
Provides producers with data
Field day gives producers an advertising venue
The Louisiana Forage-Based Bull Performance Test Program
J.E. DevillierArea Livestock Agent
East/West Feliciana Parishes