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Yale Residency - Rabbits, Guinea Pigs, Misc. Rodents > 17. Guinea Pigs and Hamsters: Husbandry and Repro > Flashcards

17. Guinea Pigs and Hamsters: Husbandry and Repro Flashcards

1
Q

Can hamsters be housed outside?

A

No

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2
Q

5 functions of vocalization of GPs

A
  1. Increase proximity
  2. Greeting
  3. Proximity-maintaining
  4. Proximity-regaining
  5. Distress/alarm
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3
Q

Scruffing GPs

A

Not recommended - can cause hair depilation

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4
Q

Temp for housing GP

A

68-79 F

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5
Q

Recommended height for GP

A

7 in

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6
Q

Why are cedar shavings not recommended?

A

Microsomal enzymes and cytotoxicity

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7
Q

Why are untreated softwood shavings not recommended?

A

Can affect animals’ metabolism via cytochrome p450

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8
Q

Sanitation of GP cages

A

at least once every 2 weeks

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9
Q

Enrichment used in mice may not work with GPs for what reason?

A

GPs have neophobia

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10
Q

5 accessory sex glands in GPs

A
  1. Seminal vesicles
  2. Prostate gland
  3. Coagulating gland
  4. Bulbourethral gland
  5. Preputial gland
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11
Q

Inguinal canals in GPs

A

Remain open

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12
Q

Do GP boars have an os penis?

A

Yes

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13
Q

Repro system of female GP

A

Bicornate uterus, single os cervis

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14
Q

What kind of placenta do GPs have

A

Discoidal, hemomonochorial

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15
Q

When to breed female GPs

A

Breed as early as 2-3 months, but no later than 6-7 months

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16
Q

When does vaginal closure membrane in GPs open/

A

Estrus and parturition

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17
Q

Estrous cycle in GPs - length

A

16 days

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18
Q

Proestrus in GPs

A

Vaginal swelling, rupture of membrane, increased activity. Nucleated and cornified epithelial cells

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19
Q

Estrus in GPs

A

Vaginal swelling, perforation of membrane, lordosis, cornified epithelial cells

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20
Q

Are GPs polygamous?

A

Monogamous OR polygamous

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21
Q

Gestation length in Gps

A

68 days

22
Q

GP litter size

A

2-5 piglets

23
Q

Weaning age in Gps

A

7 days

24
Q

Ketoacidosis (pregnancy toxemia common in GPs is due to what?

A

Reduced carbohydrate intake and mobilization of fat stores

25
Q

C/S of ketoacidosis

A

Fasting hypoglycemia, hyperlipidemia, ketonemia, proteinuria, aciduria
Death

26
Q

Circulatory forms of pregnancy toxemia (pre-eclampsia)

A

Vascular insufficiency/ischemia, hemorrhage/necrosis, thrombosis, coagulopathy

27
Q

Prevention of pregnancy toxemia

A

Keep weight under 500g
Avoid stress/fasting
Don’t transport pregnant GP
High energy diet near end of pregnancy

28
Q

Tx of pregnancy toxemia

A

Treat electrolyte and glucose abnormalities
Fluids
Steroids

29
Q

When do you see ovarian cysts in GPs (what age)

A

1-4 years

30
Q

C/S of ovarian cysts in GPs

A

Anorexia, depression, abdominal distension, bilateral hairloss over flanks and rump, infertility

31
Q

Ovarian cysts in GPs are associated with which other issues?

A

Uterine leiomyomas, endometritis, cystic endometrial hyperplasia

32
Q

Tx of ovarian cysts in GPs

A

Sx removal or OHE

33
Q

Causes of mastitis in GPs

A

E. coli, Klebsiella, Staph zoo, Pasteurella, Proteus

34
Q

Which hamsters don’t hibernate?

A

Phodopus sungorus (Djungarian)

35
Q

Hibernation vs estivation

A

Hibernation: Lack of activity and metabolic depression
Estivation: State of dormancy caused by high temps

36
Q

Height requirement for hamsters

A

6 inches

37
Q

Housing temp of hamsters

A

68-79 F

38
Q

Pellet placement for hamsters

A

On the floor - broad muzzle prevents them from eating from normal hoppers

39
Q

Female repro tract

A

Bicornate uterus

Two cervices but single cervical os

40
Q

4 accessory sex glands of hamsters

A
  1. Vesicular glands
  2. Coagulating glands
  3. Prostate gland
  4. Bulbourethral gland
41
Q

Length of estrus in hamsters

A

4 days

42
Q

Gestation length in hamsteres

A

16

43
Q

Hamsters are prone to which repro issues?

A

Granulosa cell tumors
Uterine adenocarcinomas (Chinese hamsters)
Cystic ovaries (Dwarf hamsters)
Mastitis

44
Q

Syrian hamster

A

Mesocricetus auratus

45
Q

Chinese hamster

A

Cricetulus griseus

46
Q

Armenian hamster

A

Cricetulus migratorius

47
Q

European hamster

A

Cricetus cricetus

48
Q

Djungarian hamster

A

Phodopus

49
Q

Siberian hamster

A

Phodopus sungorus

50
Q

Russian dwarf hamster

A

Phodopus campbelli

51
Q

Desert hamster

A

Phodopus roborovski

52
Q

Which hamster has the most chromosomes?

A

Mesocricetus auratus (44 as opposed to 20’s)

Yale Residency - Rabbits, Guinea Pigs, Misc. Rodents (18 decks)

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