Midterm Fail Questions Review

Question 1

Diestrus vs anestrus

Answer 1

Diestrus occurs within the estrous cycle and anestrus is the non reproductive cycle

Question 2

During diestrus the follicle on the ovary has been replaced by the structure called the _____ which produces the hormone ______

Answer 2

CL and secretes the progesterone

Question 3

______ stimulates the hypothalamus which produces the hormone _________

Answer 3

Daylight and GnRH

Question 4

Luteal cells secrete the hormone ________

Answer 4

Progesterone

Question 5

Without __________ to act as an inhibitor the FSH levels rise and the estrous cycle repeats itself

Answer 5

Progesterone

Question 6

Lost 2 factor that affect spermatogenesis in the stallion

Answer 6

TSW
age

Question 7

List 4 methods of a breeding soundness examination

Answer 7

Medical history of stallion
Medication history of stallion
Behaviour history of stallion

Question 8

What do sperm cells that have been exposed to elevated temperatures exhibit?

Answer 8

Sperm cells exposed to excess heat from the AV liner exhibit a circling type motility, have reduced sperm longevity in raw and extended semen and may be rendered infertile

Question 9

List 2 factors that relate to poor reproductive efficiency in horses

Answer 9

1. Seasonal occurrence of estrus
2. Horses are over managed by people opposed to following there natural breeding season

Question 10

List 4 factors of reproductive management

Answer 10

1. Detection of estrus
2. Mating management
3. Pregnancy determination
4. Estrous cycle management

Question 11

List four methods of teasing

Answer 11

1. Tease pen/stall
2. Tease chute
3. Tease cage
4. Tease wall

Question 12

List two that mares are not in estrus

Answer 12

Kicking
Ears back
Squealing

Question 13

How is rectal palpitation used to indicate estrus?

Answer 13

Flaccid tone of cervix= estrus
Firm tone of cervix = diestrus

Question 14

How is rectal palpitation used to predict ovulation?

Answer 14

Follicular size and tone

Question 15

What is progesterone used for in breeding management?

Answer 15

Suppress heat during transition into the ovulary season in mares that have histories of long and erratic estrous cycles

Question 16

What is the name of the synthetic progesterone?

Answer 16

Altrenogest, renugate

Question 17

Most stallions that are considered “good coolers” will still have at least ____ to ___% of the initial sperm motility after 24 hours of cooling

Answer 17

40-50%

Question 18

Semen is generally ordered when a follicle ____mm to ____mm in diameter is first detected

Answer 18

35-40mm

Question 19

List one advantage of cooled semen

Answer 19

Safer and cheaper than shipping mares and foals long distance for mare to be bred

Question 20

In general pregnancy rates per cycle using frozen semen are ____ to ____% lower than with cooler transported semen

Answer 20

5-10%