Estrus Detection and Artificial Insemination

Question 1

Females that are open or not pregnant should be ________________

Answer 1

closely monitored at least twice daily

Question 2

Various devices have been developed to facilitate easier estrus detection:

Answer 2

true:
1. Pressure-sensitive devices
2. Teaser males/females
3. Pedometers

Question 3

60% to 70% of estrual activity occurs between _____________

Answer 3

6 pm and 6 am

Question 4

are placed in tailhead of females, such that when the indicator changes in color, the female in in standing heat and mounting has occurred

Answer 4

pressure-sensitive devices

Question 5

can also be used, where inkball markers are placed under the chin, which will mark the withers of cows that have been recently mounted

Answer 5

Teaser males/females

Question 6

indicate that increasing pattern of movement (restlessness) may signify that the female is nearing standing heat

Answer 6

pedometers

Question 7

AI is most effective when done from _______________

Answer 7

mid-estrus to a few hours after the end of estrus

Question 8

Fertility is maximal if AI is done ____________

Answer 8

13 to 18 hours before ovulation