AAVSB Reproductive Medicine and Theriogenology

Question 1

In cattle, which hormone is primarily responsible for causing luteolysis at the end of the estrous cycle?

Accepted Answer

Prostaglandin F2α (PGF2α)

Answer

Luteinizing hormone (LH)

Answer

Follicle-stimulating hormone (FSH)

Answer

Oxytocin

Question 2

What is the average gestation length in horses?

Accepted Answer

335 days

Answer

270 days

Answer

283 days

Answer

365 days

Question 3

Which of the following species is classified as an induced ovulator?

Accepted Answer

Cat

Answer

Cow

Answer

Mare

Answer

Ewe

Question 4

During early pregnancy in cattle, the corpus luteum is maintained primarily by which substance secreted by the embryo?

Accepted Answer

Bovine trophoblast protein-1 (bTP-1)

Answer

Progesterone

Answer

Estrogen

Answer

Relaxin

Question 5

In the bitch, which phase of the estrous cycle is typically the longest and is characterized by uterine quiescence?

Accepted Answer

Anestrus

Answer

Proestrus

Answer

Estrus

Answer

Diestrus

Question 6

Which serum hormone level is most commonly monitored to determine the optimal breeding time in bitches?

Accepted Answer

Progesterone

Answer

Estrogen

Answer

LH

Answer

FSH

Question 7

What is the term for primary uterine inertia in which the myometrium fails to generate adequate contractions to expel the fetus?

Accepted Answer

Primary uterine inertia

Answer

Cervical stenosis

Answer

Fetomaternal disproportion

Answer

Hydrops allantois