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Flashcards in mice and rats Deck (25):
0

What percent of lab test animals mice and rats?

90%

1

Why do labs use mice and rats?

Require less food/space, reproduce quickly and in large animals, many inbred strains with similar genetic characteristics

2

What is the life span of mice and rats?

Mice: 1 1/2-3 years
Rats:2 1/2-3 1/2 years

3

What is the dental formula for mice and rats?

2( i1/1 c0/0 p0/0 m3/3)

4

How many pairs of mammary glands do mice and rats have?

Mice: 5 pairs
Rats: 6pairs

5

What are harderian glands?

Small gland found in medial canthus of eye that produces red tinged fluid

6

What is mice behavior like?

Social animals, make good pets. Fighting can occur against male mice

7

What is rat behavior like?

Clean, easy trained, can be mixed with no fighting

8

What temperature should mice and rats be kept at?

72F

9

What should the humidity level be for mice and rats?

40-70%

10

How much light do mice and rats need?

12hrs

11

What is coprophagic?

Eats feces

12

What type of eater is a mouse or rat?

Omnivore

13

What ID methods are used for lab mice and rats?

Cage cards, hair coat, ear knotch or punch, ear tag or stud, dye staining of fur, tattooing, microchips

14

What can confirm a pregnancy?

Copulatory plugs

15

What are copulatory plugs?

Waxy white to yellow material that plugs the vagina

16

What are three common medical problems in rats?

Mammary gland tumors
Respiratory infections
Tail necrosis

17

What are mammary gland tumors normally made of?

Normally benign firm subcutaneous circular masses

18

How big are mammary gland tumors normally?

8-10cm in diameter

19

What is mycoplasma pulmonis?

Caused by Sendai virus

20

What are the clinical signs of mycoplasma pulmonis?

Nasal discharge, teeth chattering, wt. loss, ruffled hair coat, bunched posteur

21

When are respiratory infections usually seen in rats?

When they are stressed

22

What is tail necrosis?

Instituted blood supply to the tail

23

What type and age of rats usually have tail necrosis?

Lab rats 7-15 days old

24

What is associated with tail necrosis?

Decreased humidity and essential fatty acids in diet