All Assorted

Question 1

What are two functions of the follicle on the ovary ?

Answer 1

1.Contains the ovum
2.Produces estrogen

Question 2

What is the ovum caught by ? Where is it directed to? And how long does it survive ?

Answer 2

Caught by the - Fimbria
Directed into the - Oviduct
Will survive for - 12 hours

Question 3

During diestrus the follicle on the ovary has been replaced by what? And what hormone does it produce?

Answer 3

Replaced by the - Corpus Luteum
And produces progesterone

Question 4

If the mare is not pregnant in the final days of diestrus what hormone is released? And what is destroyed?

Answer 4

PGF2a is released
And the CL is destroyed

Question 5

What is the natural peak time for conception in mares ?

Answer 5

Summer solstice

Question 6

The hormone GnRH stimulates is what ?

Answer 6

The pituitary gland

Question 7

What do the follicles secrete when they reach 20-25 mm?

Answer 7

Estrogen

Question 8

If no embryo is present in the uterus at the end of this 12-15 day period the uterine endometrium secretes what??

Answer 8

Prostaglandin (PGF2a)

Question 9

What destroys the CL which is producing progesterone?

Answer 9

PGF2a

Question 10

Without________ to act as a inhibitor the FSH levels rise , and the estrous cycle repeats itself

Answer 10

Progesterone

Question 11

List one factor that relates to poor reproduction efficiency in horses

Answer 11

Seasonal occurrence of estrus

Question 12

What are the 2 aspects of reproductive management

Answer 12

1. Detection of estrus
2. Mating management

Question 13

List 2 methods of teasing

Answer 13

1. Pen or stall
2. Tease wall

Question 14

What insemination timeline leads to highest conception rates?

Answer 14

36 hours before and up to ovulation

Question 15

List 2 factors that affect spermatogenesis is the stallion

Answer 15

1. The hormone testosterone
2. Daylight length

Question 16

List one venereal disease found in horses

Answer 16

Contagious equine metritis

Question 17

List 2 components of a breeding soundness exam

Answer 17

1. Medical history of the stallion
2. Medication history
3. Behaviour history

Question 18

List 4 methods of semen collection

Answer 18

1. Condom
2. Pharmacologically induced
3. Use of an AV
4. Manual Manipulation

Question 19

What is the normal internal temperature range of the AV?

Answer 19

44c to 48c fill at 50c

Question 20

List one advantage of pasture breeding

Answer 20

High conception rates

Question 21

List one disadvantage of pasture breeding

Answer 21

Risk of injury to stallions and mares is greater

Question 22

List one advantage of hand breeding

Answer 22

Increased control of stallion and mares resulting in fewer injuries

Question 23

List one disadvantage of hand breeding

Answer 23

Increased labour

Question 24

List one function of the semen extender

Answer 24

Increase the volume of the ejaculate

Question 25

What is the most common ingredient found in semen extenders

Answer 25

Milk based

Question 26

How many progressively motile Sperm should be inseminated in the mare and at what concentration/ml?

Answer 26

500 million and 25-50ml

Question 27

How many progressively motile sperm are standard does for shipped semen

Answer 27

1 billion and 25-50ml

Question 28

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

Answer 28

40% to 50%

Question 29

Semen is generally ordered when a follicle ___ mm to ___mm in diameter is first detected

Answer 29

35mm to 40mm

Question 30

In order to help ensure that ovulation occurs within 24 to 48 hours after insemination mares are commonly administered either ________ or ______________________

Answer 30

Desorelin or Human Chorionic Gonadotropin (hcg)

Question 31

A minimum of ____% progressively motility should be present post thaw for a stallion considered a “good freezer”

Answer 31

30%

Question 32

List one common purpose for embryo transfer

Answer 32

To produce more that one foal in a season from a particularly valuable mare

Question 33

Is embryo collection a surgical or non surgical procedure?

Answer 33

Non surgical

Question 34

What is a intracytoplasmic sperm injection

Answer 34

A micro injection of a single sperm into the cytoplasm of a mature oocyte

Question 35

One benefit of line breeding

Answer 35

Concentrates on desirable traits

Question 36

List one drawback of line breeding

Answer 36

Also concentrates on undesirable traits

Question 37

What % of blood is contributed by an ancestor in the 3rd generation

Answer 37

12.50%

Question 38

What is linecross

Answer 38

Line cross is a line bred individual from one family crossed with a line bred individual from another family

Question 39

A lighting program that supplies ___ hours of light to __ hours of dark provide best results for stimulation of the estrous cycle

Answer 39

16 & 8 hours

Question 40

3 methods for pregnancy determination

Answer 40

1. Palpation 2. Ultrasound 3. Observation