Equine reproduction Flashcards

1
Q

reproductive problems

A

-seasonal breeders
-prolonged estrus/variable ovulation time
-low foaling rates

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2
Q

methods for mating

A

-pasture breeding
-hand mating
-AI
-estrus detection

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3
Q

pasture breeding pros and cons

A

pros
-less labor
cons
-breeding date unknown
-mares that don’t show estrus/decreased uterine defense won’t get pregnant
-more risk to inexperienced stallions

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4
Q

hand mating pros and cons

A

pros
-allows more mares per stallion
-safer for stallion
-better for mares with decreased uterine defense
cons
-shouldn’t be used for young stallions that havent bred mares before

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5
Q

AI pros and cons

A

pros
-breed larger numbers of mares
-identifies reproductive problems
-helps mares who dont show estrus/decreased uterine defense
-safer for animals
cons
-labor intensive

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6
Q

score meaning(0-4) for estrus detection

A

0: fights presence of stallion
1: does not pay attention to stallion
2: interested in stallion with raised tail
3: raising tail and winking near stallion
4: raise tail, wink, and urinate near stallion

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7
Q

how often are mares tested for estrus

A

every other day

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8
Q

at what follicle diameter is the mare ready to breed

A

35 mm

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9
Q

when should you ultrasound post pregnancy to detect pregnancy

A

day 14

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10
Q

how to deal with twins in equine pregnancy

A
  1. crush one of the vesicles
    OR
  2. administer PGF2a to abort pregnancy
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11
Q

how does cervical tone impact estrus detection

A

if cervix is tight mare is likely in diestrus

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12
Q

Missouri style AV

A

-flexible and lightweight
-looses temp easily

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13
Q

colorado style AV

A

large outer casing to maintain temperature

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14
Q

cleanout procedure

A

first two weeks of breeding season sperm collection get discarded

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15
Q

steps to prep AV

A

-add non spermicidal lubricant to halfway down AV
-add collection bottle to end with gel filter
-fill with water and release to adjust pressure(you should be able to make a fist in it)

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16
Q

steps for sperm evaluation

A

-remove filter and check for urine or blood
-check volume and concentration
-look at sperm under the microscope

17
Q

desired motility for fresh, chilled, and frozen sperm

A

fresh: 85%
chilled: 60%
frozen: 30-40%

18
Q

what is the scale for body condition? what is the desired body condition for brood mares?

A

-1-10
-6-7

19
Q

how can the vulva be checked to determine the body condition

A

-do the lips close
-where is it in relation to rectum