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VMS 1007 > Fertile female II > Flashcards

Fertile female II Flashcards

1
Q

What is dioestrus characterised by?

A

A functional corpus luteum and high progesterone

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2
Q

What is proestrus characterised by?

A

a significant increase in oestradiol

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3
Q

What is oestrus characterised by?

A

High oestradiol and sexual receptivity

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4
Q

What is metoestrus characterised by?

A

Follicular remodleling to form a corpus luteum

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5
Q

What is anoestrus?

A

When the cycling stops

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6
Q

How many waves of FSH do you get in a horse?

A

two waves

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7
Q

What is the basic pattern for a follicle?

A

recruitment phase, selection phase (only the best follicle is ovulated) then domiance phase (single follicle takes over)

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8
Q

Why might a stud farm mate a horse twice within the period of oestrus?

A

They have a long oestrus period 4-8 days

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9
Q

What is ‘being in heat’ referred to in the horse?

A

being hot or cold towards the stallion

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10
Q

What is the cervix like during diestrus?

A

Cervix is tightly closed

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11
Q

What is the cervix like during estrus?

A

Swollen/ softened cervix

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12
Q

What does progesterone stop?

A

It doesnt stop recruitment of follicles but it does stop ovulation

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13
Q

What are the ‘waves’ in mares?

A

Many follicles developing over time but none ovulating due to lack of LH surge so atresia occurs

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14
Q

Why is the oestrus cycle different in cows?

in terms of follicles

A

They have waves/ many follciles being recruited developed etc.

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15
Q

What part of the oestrus cycle does luteolyis occur in?

A

proestrus

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16
Q

What parts of recruitment and selection are FSH dependent?

A

growth and selection

17
Q

What parts of the follicle selection/ovulation are dependent on LH?

A

Dominance/ becoming a dominant pre-ovulatory follicle

18
Q

What does the prolonged oestrus in teh bitch mean?

A

superfecundation, large litters can be sired by multiple dogs

19
Q

Which animal has no defined metoestrus phase?

A

dogs

20
Q

Which animal has no mechanism to break down the corpus luteum and therefore no mechanism to begin cycling again?

A

Dogs

21
Q

why wont cats have progesterone if they are not mated

A

they are induced ovulators so unless they are mated there will be no corpus luteum

22
Q

what helps to suppress oestrus in the queen

A

lactation

VMS 1007 (30 decks)

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