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Farm Math Formulae

Percent Calf Crop calves weaned/cows exposed x 100
Pregnancy Rate (% Pregnant) cows pregnant/cows exposed x 100
Calving Interval Interval 1 (in days) + interval 2 (in days)/ number of intervals
Average Daily Gain Final Weight - Initial Weight/# of days between weights = Gain per day
Adjusted Weaning Weight actual weaning weight - birth weight/ age in days x 205 + birth weight
Yearling Weight final weight - actual weaning weight/# days since weighing x 160 + 205 day adj. weaning weight
Dressing Percentage hot carcass weight/live slaughter weight x 100
Shrinkage hot carcass weight - chilled carcass weight/hot carcass weight x 100
additive factor for 2 yr old dam 60lb Male, 54lb Female
additive factor for 3 yr old dam 40lb male, 36lb female
additive factor for 4 yr old dam 20lb male, 18lb female
additive factor for 5-10 yr old dam 0
additive factor for older than 11 yr old dam 20lb male, 18 lb female
carcass value live value of animal per 100lb/ dressing percent = $ value of carcass per 100lb
Created by: asculpepper



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