Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Horse Science > Exam 3 > Flashcards

Exam 3 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

T/F

The most common cause of abortion is placentitis/ Feto-placental infection

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

T/F

Twins in horses only have a 10% chance of being carried to term

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

T/F

Natural reduction of twins in horses have a high (>90%) success rate if embryos are fixed bilaterally

A

False
11%

Becomes true if manual

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T/F

Transition in mares is the period between anestrus and the ovulating season

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

T/F

The uterine environment can significantly increase or decrease fetal development

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

T/F

PMSG (eCG) is commonly used to superovulate mares

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

T/F

The mares natural breeding season is April-September

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

T/F

Mares foaling in poor body condition will have a longer gestation period

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

T/F

Migration of the equine embryo between the horns is critical for maternal recognition of pregnancy

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

T/F

Currently, AQHA allows the registration of cloned horses

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

T/F

The estrus “heat” period in mares usually lasts about 7-9 days

A

False

5-7 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

T/F

Gestation length varies with sex whereby fillies are carried longer than colts

A

False

Colts carried 2-7 days longer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

T/F

A large operation is performed on a mares vulva to help prevent uterine infection

A

False they just sew it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

T/F

The period when the mare shows no signs of reproductive activity during the winter months is referred to as transition

A

False

Anestrus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

T/F

The period between anestrus and the ovulatory season is called diestrus

A

False

Transition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

T/F

Ovulation in the mare occurs 24-48 hours after the end of estrus

A

False

Prior to the end of estrus

17
Q

T/F

Mares respond to 6 H of light which will induce ovulatory season

A

False

Enough to total 16 hours per day

18
Q

T/F
In Oklahoma, artificial light should be started in November and 6 h of light must be added to the end of the day if you want estrus by February 1st

A

False
7-8
5:30 pm to 12:30 am

19
Q

T/F

The normal gestation length in the mare is 340-345

A

True

20
Q

T/F

PMSG causes formation of secondary CL which produce progesterone that helps maintain pregnancy

A

True

21
Q

What is the proper insemination dose for artificial insemination with FRESH semen?

A

500x10^6

22
Q

This hormone released by the anterior pituitary is responsible for the growth of follicles in mares

A

Follicle Stimulating Hormone (FSH)

23
Q

This hormone produced by the follicle is responsible for the estrus behavior and the development of secondary sex characteristics

A

Estrogen

24
Q

This hormone released from the anterior pituitary is responsible for the maturation and ovulation of the follicle

A

Leutenizing Hormone (LH)

25
Q

This hormone is responsible for the maintenance of pregnancy

A

Progesterone

26
Q

This hormone is responsible for reducing the corpus luteum and can be exogenously administered to short cycle a mare

A

Prostaglandin (PGF2a)

27
Q

Mares ovulate and are receptive to stallions only during certain times of the year. What term most accurately describes this phenomenon?

A

Seasonally polyestrous

28
Q

Period between anestrus and the ovulatory season of a mare

A

Transition

29
Q

On an ultrasound image, an early stage embryo can be detected by a distinct characteristic image due to the ultrasound reflecting off the inside of a spherical embryo. What is the name for thsi?

A

Spectral points

30
Q

The only point of the mares ovary at which ovulation can occur is called the

A

Ovulation fossa

31
Q

Regu-mate can be used to prevent a mare from cycling. It is an example of what synthetic hormone?

A

Progesterone

32
Q

a mature follicle that is ready to ovulate will be how many millimeters in diameter

A

40 + mm

33
Q

The hormone hCG can be used to cause mares to ovulate large follicles because it has a similar action to what hormone?

A

LH

34
Q

The heartbeat of the embryo should be detectable by how many days?

A

28

Horse Science (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions