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Therio > Breeding Soundness 1.1 > Flashcards

Breeding Soundness 1.1 Flashcards

1
Q

all animals except dogs and horses have intra-scrotal testes _______

A

at birth

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2
Q

dogs have intra-scrotal testes by _____ after birth

A

14 days (6 months at the latest)

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3
Q

horses have intra-scrotal testes by _____ after birth

A

10 days (9 months at the latest)

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4
Q

decreased body condition causes decreased ____, lengthening time to puberty

A

LH

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5
Q

canine average age of puberty in months

A

9 (5-12)

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6
Q

feline average age of puberty in months

A

9 (8-10)

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7
Q

equine average age of puberty in months

A

14 (10-24)

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8
Q

bovine average age of puberty in months

A

11 (7-18)

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9
Q

sheep average age of puberty in months

A

7 (6-9)

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10
Q

goat average age of puberty in months

A

5 (3-8)

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11
Q

pig average age of puberty in months

A

7 (5-8)

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12
Q

llama and alpaca average age of puberty

A

2-3 years

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13
Q

the ____ center in the brain is inactive males following puberty

A

surge

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14
Q

FSH produced by the anterior pituitary acts on ______ cells

A

sertoli

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15
Q

LH produced by the anterior pituitary acts on ______ cells

A

leydig

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16
Q

hormone produced by sertoli cells under influence of FSH

A

E

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17
Q

hormone produced by leydig cells under influence of LH

A

T (some T converted to E)

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18
Q

hormone produced by sertoli cells under influence of T

A

DHT

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19
Q

hormone produced by sertoli cells that directly provides negative feedback to the anterior pituitary

A

inhibin

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20
Q

dog considered seasonal breeder? changes during non-breeding season?

A

no- none

21
Q

cat considered seasonal breeder? changes during non-breeding season?

A

yes (long-day)- decreased sperm count

22
Q

horse considered seasonal breeder? changes during non-breeding season?

A

somewhat (long-day)- decreased sperm count

23
Q

cow considered seasonal breeder? changes during non-breeding season?

A

no- none

24
Q

sheep considered seasonal breeder? changes during non-breeding season?

A

yes (short-day)- decreased libidio, scrotal circumference and semen quality

25
Q

goat considered seasonal breeder? changes during non-breeding season?

A

somewhat (short-day)- decreased libido, buck odor, scrotal circumference, semen quality

26
Q

pig considered seasonal breeder? changes during non-breeding season?

A

unknown- unknown

27
Q

llama considered seasonal breeder? changes during non-breeding season?

A

no- none

28
Q

dog- time required for full spermatogenic cycle in days

A

62

29
Q

cat- time required for full spermatogenic cycle in days

A

47

30
Q

horse- time required for full spermatogenic cycle in days

A

55

31
Q

cow- time required for full spermatogenic cycle in days

A

61

32
Q

sheep- time required for full spermatogenic cycle in days

A

47-56

33
Q

goat- time required for full spermatogenic cycle in days

A

59-64

34
Q

pig- time required for full spermatogenic cycle in days

A

39

35
Q

with changes in ambient temp, testes must be maintained at ~____‘C

A

35

36
Q

muscle that primarily contributes to maintenance of testes temp

A

tunica dartos

37
Q

animals with long axis of testis oriented horizontal

A

dog, stallion, boar

38
Q

animals with long axis of testis oriented vertically

A

bull, ram, buck

39
Q

development and maintenance of function of accessory sex glands is ______ dependent

A

testosterone

40
Q

animals with all four accessory sex glands present (bulbourethral glands, prostate, vesicular glands, ampullae)

A

horse, cow, sheep, goat

41
Q

accessory sex gland found in the dog

A

prostate

42
Q

accessory sex glands found in the cat

A

bulbourethral glands, prostate

43
Q

accessory sex glands found in the pig

A

bulbourethral glands, prostate, vesicular glands

44
Q

accessory sex glands found in the llama and alpaca

A

bulbourethral glands, prostate

45
Q

most common accessory sex gland to be pathologically affected in cows

A

vesicular glands

46
Q

most common accessory sex gland to be pathologically affected in horses

A

ampullae

47
Q

animals with fibroelastic penis

A

bull, ram, buck, boar, macho

48
Q

layer of the penis that prevents increase in size in the fibroelastic penis

A

tunica albuginea

49
Q

animals with musculocavernous penis

A

stallion, dog

Therio (13 decks)

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