comparison of owning a bulls vs. AI for producer of...
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Comparison of owning a bull vs. AI for producers of various sizes
Robert Wells, Ph.D., PAS
Livestock Consultant
Noble Foundation
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Why AI?
• More early calves • Uniform calf crop • Higher quality genetics than you could afford to buy
in the bull. • Reduce time for genetic progression • Can select for calving ease • Strategically plan matings • Increased marketability of calves • Sexed semen
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Cow Gestation Length: 283 days
Days in a year: 365 days
Difference: 82 days
Goal: 1 calf every year…
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Systems
• Progressive terminal cross breeding
• Replacement heifers
• Registered producers
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Large Herds; ≥50hd
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Tighten Up Calving Season
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Not So Ideal Reproduction Performance (50 head herd)
Day 1 Day 90
Day 21 Day 42 Day 63
25% 30% 30% 15%
12 hd 15 hd 15 hd 8 hd
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No.
Head
Days to
Weaning
ADG
Total
LBS.
Day 1-21 12 210 2.1 6,252
Day 21-42 15 189 2.1 7,154
Day 42- 63 15 168 2.1 6,492
Day 63-90 8 147 2.1 3,110
Total lbs 23,008
Total $ @ $1.69/lb $38,883
http://www.beefbasis.com/ForecastingTools/tabid/73/Default.aspx; 470 lb st @ $1.791, 450 lb hfr @ $1.5809, Sell Dec. 5, 2012 @ OKCWest
Weaning Projections (Not So Ideal Scenario)
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Ideal Reproduction Performance (50 head herd)
Day 1 Day 90
Day 21 Day 42 Day 63
80% 15% 5% 2%
40 hd 7 hd 2 hd 1 hd
Values from ABS Global Beef Sire Summary, Spr. 2012, pg. 96-97
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Weaning Projections (Ideal Scenario)
No.
Head
Days to
Weaning
ADG
Total
LBS.
Day 1-21 40 210 2.1 20,840
Day 21-42 7 189 2.1 3,338
Day 42- 63 2 168 2.1 866
Day 63-90 1 147 2.1 389
Total lbs 25,432
Total $ @ $1.58/lb $40,182
Difference $1,299
http://www.beefbasis.com/ForecastingTools/tabid/73/Default.aspx; 510 lb st @ $1.6275, 490 lb hfr @ $1.5343, Sell Dec. 7, 2016 @ OKCWest
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Increase in Calf Quality (weaning weight)
• Assume same breeding seasons as before but increased potential for weaning weight.
• Using a high quality terminal cross bull to maximize weaning weight, add 75 lbs (+.36 lb ADG) to AI sired calves.
• Increases total revenue by another $1,244
Better Genetics + ideal calving distribution: st = 580 lbs; hfr = 560 lbs; Not ideal calving distribution: st = 535 lbs; hfr = 515 lbs
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Weaning Projections (Ideal Scenario)
No.
Head
Days to
Weaning
ADG
Total
LBS.
Day 1-21 (AI) 30 210 2.46 17,898
Day 1-21 (bull) 9 210 2.1 4,689
Day 21-42 8 189 2.1 3,338
Day 42- 63 2 168 2.1 866
Day 63-90 1 147 2.1 389
Total lbs 27,657
Total $ @ $1.50 lb $41,426
Difference $41,426-$40,182 = $1,244
http://www.beefbasis.com/ForecastingTools/tabid/73/Default.aspx; 580 lb st @ $1.58, 560 lb hfr @ $1.4157, Sell Dec. 7, 2016 @ OKCWest
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• Increased weights by shifting to more earlier born calves = $1299
• Increase in weights by better genetics = $1244
• Only need one bull rather than 2 = $6,000 – Depreciated over the life of the bull = $1,200/yr
– Maintenance cost on the one bull not needed = $600
• Annual Gross Profit of A.I. = $4,343
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Costs of Timed AI
Unit Cost
CIDR $ 10.25
GnRH + PG $ 8.00
Semen $20.00
Technician $10.00
AI Cost/Cow $48.25*
*Does not include labor costs
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Annual net profit of A.I. = $1,931
per 50 hd of calves
• Annual Gross Profit of A.I. = $4,343
• Cost of A.I. of 50 hd = $2,412 ($48.25*50)
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<25 hd, A.I. is difficult to justify
o Must own a bull anyway • clean up remaining open cows • Bull $6,000 over 5 yrs = • Bull maintenance
o Cost of AI (not including chute labor)
o Total annual breeding cost
o Gross Profit estimate (half of the 50 hd, previous slide) =
estimated cost (does not include chute labor)
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Replacement Heifers
• Use sexed semen from maternal bulls to produce replacement heifers. – Will be older calves of the calving season
– Bred to the ‘right bull’ and the ‘right cow’
• Use sexed semen from low BW bulls to breed to heifers. – Get bull calves from the heifers – worth more at
marketing
• Potentially add $100-150 more to the value of the cow
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5-day CO-Synch + CIDR®
Treatment day
CIDR®
GnRH GnRH
PG
AI
0 8 5
72 ± 2 hrs
8 ± 2hrs
PG
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Select Synch+CIDR® (Heat Detect & Timed AI )
Treatment day
CIDR®
GnRH GnRH PG
AI
0 10 7
72-84 hrs
Heat detect & AI
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Treatment day
CIDR®
GnRH PG
AI
0 9.5 7
60 hrs
GnRH
19 26 31
CIDR®
Heat detect & AI next 5
days
Minimum necessary Optional
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