Estrus Synchronization and Freemartinism

Question 1

is a sterile heifer which has been born twin to a bull calf

Answer 1

freemartin

Question 2

____ of heifers are sterile

Answer 2

99%

Question 3

Bulls are fertile but ______________

Answer 3

there is an evidence of lowered fertility

Question 4

Physical cause of infertility: repressed or interrupted development of the female genital
tract due to the _______________ which induces regression of Mullerian ducts in the female

Answer 4

effect of the Mullerian-inhibiting hormone produced by the fetal male Sertoli cells

Question 5

Estrus Synchronization:
Synthetic GnRH in injected into animals at to induce LH surge and ovulation

Answer 5

random days

Question 6

A dose of ______ enough to regress CLs is administered ____________

Answer 6

A dose of PGF2a enough to regress CLs is administered 7 days after

Question 7

GnRH is readministered _______, followed by breeding within _______

Answer 7

GnRH is readministered 48 hours after, followed by breeding within 24 hours