Alan":21hy9zo2 said:
What values, factors, to consider in total dollars lost due to production loss could be an interesting discussion.
A good beef cow raises and weans a calf while maintaining a 12 month calving interval.
Her "job" is to be pregnant, calving or trying to get pregnant while feeding her calf.
revenue lost + cost of maintenance = total $ lost
Let's look at a 13 month calving interval vs 12 month
1 month is 8.34% of a year. so a 13 month calving interval would = 8.34% loss of revenue vs 12 month
IF your weaned calf average price is $1000
1000 x 8.34% = $83.40 lost revenue [1000 - 83 = $917]
feed is by far the biggest expense in cost of maintenance
cost of feed per cow per day x 30 extra days of carrying an open cow
What number do you want to plug in?
I'll use $1 per day to keep the math simple.
1 x 30 = $30
$30 + 83.40 = 113.40 divided by 30 days = $3.78 lost per day open after 12 month calving interval
i would round to $4 per day to keep it simple and to cover the time value of money plus all other misc expenses.
On plus side there would be an opportunity to increase revenue by $27.80 per cow by shortening her calving cycle by 10 days.
83.4 divided by 30 = 2.78 per day
10 days x 2.78 = 27.80
21 days x 2.78 = 58.38
My math says a cow that settles on 1st service vs 2nd service is $58.38 more profitable
and 1st service conception vs 3rd service would be $116.76