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Theriogenology > Companion Animal Breeding Management > Flashcards

Companion Animal Breeding Management Flashcards

1
Q

At what age do canines reach puberty?

A

6-24 months

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2
Q

At what age do felines reach puberty?

A

4-12 months

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3
Q

What is the average duration of proestrus in dogs?

A

9 days (3-17 days)

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4
Q

During which phase of the oestrus cycle does the bitch allow mating?

A

Oestrus

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5
Q

On average, how many days does oestrus last in a bitch?

A

9 days (3-21 days)

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6
Q

During which phase does the bitch have a bloody vulvar discharge?

A

Proestrus

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7
Q

What colour is the vulvar discharge in oestrus in the bitch?

A

Straw coloured

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8
Q

During which phase is there an LH peak in the bitch?

A

Oestrus

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9
Q

How many days is diestrus in the bitch?

A

60-70 days

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10
Q

In which phase are progesterone levels elevated and then slowly decrease in the bitch?

A

Dioestrus

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11
Q

What is a pseudopregnancy and is it normal in the bitch?

A

False pregnancy - occurs in all bitches (normal)

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12
Q

What is a pseudocyesis and is it normal in the bitch?

A

False parturition - abnormal

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13
Q

What causes a pseudopregnancy?

A

2 months of elevated P4 levels

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14
Q

What causes a pseudocyesis?

A

P4 levels drop suddenly = lactation, nesting behaviour, adopting teddies, etc

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15
Q

While examining a bitch in proestrus, what would the vaginal walls and folds look like?

A

Pink, swollen, rounded folds, moist

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16
Q

While examining a bitch in oestrus, what would the vaginal walls and folds look like?

A

Pale pink, shrunken, crenulated, dry

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17
Q

While examining a bitch in dioestrus, what would the vaginal walls and folds look like?

A

Hyperaemic areas, rounded folds

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18
Q

During oestrus what % of cells are cornified upon doing a vaginal cytology in a bitch?

A

> 90% cornified

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19
Q

During which phase are parabasal cells more prominent?

A

Proestrus

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20
Q

During dioestrus, what % are superficial cells?

A

<50%

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21
Q

An influx of what type of cell occurs during dieostrus?

A

Inflammatory cells

22
Q

What type of oestrus cycle do canines have?

A

Non-seasonal monoestrus

23
Q

How many days after the LH peak does ovulation occur in the bitch?

24
Q

For fresh/fresh cooled semen, what days of oestrus should vaginal AI be done in the bitch (2 options)?

A

Day 3 and 5 OR

Day 4 and 6

25
Q

When using frozen semen for AI in a bitch, on what day of oestrus should you surgically AI?

26
Q

If doing a transcervical insemination (TCI) in the bitch with 2 doses of frozen semen, what days of oestrus should a TCI be done?

A

Day 4 and 5 or

Day 5 and 6

27
Q

How many hours is fresh canine semen expected to last?

A

48 - 72 hours

28
Q

How many hours is fresh chilled canine semen expected to last?

29
Q

Frozen canine semen lasts for how many hours post thawing?

A

8 - 12 hours

30
Q

After how many days post LH surge should an ultrasound be done for a pregnancy diagnosis in a bitch?

A

> 21 days (usually 30 days) post LH surge

31
Q

After how many days post LH surge can radiographs be conducted to determine the litter size of the bitch?

A

> 45 days post LH surge

32
Q

How many days from the LH peak to whelping is there estimated to be?

33
Q

How many days are between Day 1 of diestrus to whelping?

34
Q

How many days are between the period of ovulation and whelping?

35
Q

What can cause mammary hyperplasia in a bitch?

A

Progestins

36
Q

Name 2 hormones used to control oestrus cycle that cause masculinization in a pregnant bitch

A
  1. Progestins

2. Androgens

37
Q

What 2 hormones do androgens cause a reduction?

A

FSH and LH

38
Q

What type of oestrus cycle do felines have?

A

Seasonal polyoestrous

39
Q

Felines are induced ovulators. True/False?

40
Q

How many days are in a felines oestrus phase?

41
Q

How many days is the anoestrus phase in the feline?

A

30 - 60 days

42
Q

How many days is the dioestrus phase in the feline?

A

40 - 60 days

43
Q

During which phase in the feline oestrus cycle is P4 elevated?

44
Q

Cats are induced ovulators, which means that multiple copulations increase what hormone?

45
Q

For fresh AI in the feline, what should the PMS (progressive motile sperm) count be?

A

50 million PMS

46
Q

For frozen AI in the feline, what should the PMS count be?

A

20-50 million

47
Q

How many days after breeding should an ultrasound be done to diagnose a pregnancy?

48
Q

As part of the feline pregnancy diagnosis, radiographs are taken. How many days after breeding are these taken?

A

38-40 days

49
Q

What ratio of light exposure suppresses oestrus in felines?

A

8 hours light: 16 hours dark

50
Q

What ratio of light exposure induces oestrus in felines?

A

14 hr light : 10 hrs dark

51
Q

What causes mammary hyperplasia in felines?

A

Progestins

Theriogenology (12 decks)

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