Lecture 20: Feline Repro (Kelleman) Flashcards Preview

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Flashcards in Lecture 20: Feline Repro (Kelleman) Deck (43)
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0
Q

when do cats reach puberty?

A

as early as 4 months

1
Q

when is heat for cats?

A

proestrus and estrus

2
Q

what type of cycle do cats have?

A

seasonally polyestrus - repeated estrous cycles for a portion of the year
(just like horses, sheep, and goats)

3
Q

what is the seasonality of cats?

A

they are long-day seasonally polyestrus breeders

4
Q

parts of the estrous cycle in cats

A
proestrus
estrus
postestrus or interestrus
diestrus
anestrus
5
Q

do cats have pre-ovulatory progesterone?

A

no!

6
Q

do cats have vulvar discharge?

A

no!

7
Q

length of proestrus

A

short - may not be observed

8
Q

behavior of cat during proestrus

A

attractive to male, will not allow mating; affectionate

9
Q

anatomy of a cat during proestrus

A

ovarian follicular growth

10
Q

hormonal effect of proestrus in cats

A

estrogen is HIGH

11
Q

length of estrus in cats

A

variable, several days to 2 weeks

12
Q

behavior of cats in estrus

A

attractive to male, allows mating; affectionate

13
Q

anatomy of a cat during estrus

A

ovarian follicular growth

14
Q

hormonal effect of a cat in estrus

A

estrogen PEAKS

15
Q

Ovulation in cats

A

Induced ovulator!
induced by coitus
occasionally spontaneous

16
Q

how is ovulation induced?

A

adequate vaginal stimulation from mating will cause GnRH release, LH surge and ovulation

17
Q

what is the best chance of ovulation in cats?

A

4 matings in 2 hour period for best chance of ovulation

18
Q

mating behavior in cats

A

Tom mounts and grasps queen’s neck. queen vocalizes with intromission. separation, queen licks, rolls and is aggressive toward male

19
Q

anatomy of a cat during postestrus or interestrus

A

follicular regression

20
Q

hormonal effect of a cat in postestrus or interestrus

A

no estrogen or progesterone!!

21
Q

length of diestrus in a cat

A

pregnant - 2 months

non-pregnant - 40 - 50 days

22
Q

behavior of a cat in diestrus

A

not receptive to mating

23
Q

anatomy of a cat during diestrus

A

CL; ovulation must have occurred

24
Q

hormonal effect of a cat in diestrus

A

progesterone

25
Q

options of what can happen after estrus in a cat: (3)

A
  1. no ovulation –> interestrus/postestrus
  2. ovulation –> does not get pregnant –> diestrus
  3. ovulation –> then pregnant –> diestrus
26
Q

length of anestrus in the cat

A

during fall and winter

27
Q

behavior of a cat in anestrus

A

not receptive to mating

28
Q

anatomy of a cat in anestrus

A

inactive ovaries

29
Q

hormonal effects of the cat in anestrus

A

no estrogen or progesterone

30
Q

cornification status of a cat in anestrus

A

no vaginal cornification

31
Q

where does progesterone come from during pregnancy

A

the CL

32
Q

what hormone may be used to detect pregnancy in the cat?

A

relaxin from the placenta

33
Q

fun fact about pregnancy in cats

A

queens can show estrus during pregnancy!

34
Q

what is the effect of relaxin in cats?

A

may promote prolactin release

35
Q

what is the effect of prolactin in pregnant cats?

A

it is luteotrophic (stimulates formation of the CL) and may support the CL’s of pregnancy
- longer pregnant diestrus than non-pregnant

36
Q

what type of placentation do cats have?

A

zonary, endotheliochorial, deciduate

37
Q

parturition in the cat is similar to what other animal

A

the sheep

38
Q

describe stage I of parturition in the cat

A

nesting, pacing purring

39
Q

stage II of parturition in the cat

A

queen may cry out with fetal passage

- takes several hours to a day

40
Q

stage III of parturition in the cat

A

fetal membrane expulsion

41
Q

superfecundation

A

a litter has more than 1 father. some oocytes fertilized by 1 male, others by another

  • both BITCHES & QUEENS can be bred by multiple males during their estrus
42
Q

superfetation

A

when an ALREADY pregnant female is bred and another conception event occurs

  • litters with different neonate sizes are more likely due to arrested development due to differential placental attachment or anoalies, disease, etc.
    …not sure if its legit….

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