Therio

Question 1

How many cows should be in estrus each day in a pen of 100 non-pregnant heifer cows?
A - 12 to 13
B - 1 to 3
C - 4 to 6
D - 6 to 8
E - 9 to 10

Answer 1

4-6 heifers should be in estrus on any given day

The bovine estrus cycle lasts 18 to 21 days. Therefore in 100 cows, estrus would occur in a number of cows that is calculated as (100 ÷ 18=5.55) to (100 ÷ 21= 4.76). So the best answer is 4-6 cows per day.