Recommended Space for Commonly Used
Group-Housed Laboratory Rodents
| Animals |
Weight,
g |
Floor Area/Animal,
in2 (a) |
Height(b),
in (c) |
|
Mice
|
(less than 10) |
6 |
5 |
| |
Up to 15 |
8 |
5 |
| |
Up to 25 |
12 |
5 |
| |
>25d |
>15 |
5 |
|
Rats
|
(less than100) |
17 |
7 |
| |
Up to 200 |
23 |
7 |
| |
Up to 300 |
29 |
7 |
| |
Up to 400 |
40 |
7 |
| |
Up to 500 |
60 |
7 |
| |
>500d |
>70 |
7 |
|
Hamsters
|
(less than 60) |
10 |
6 |
| |
Up to 80 |
13 |
6 |
| |
Up to 100 |
16 |
6 |
| |
>100d |
>19 |
6 |
|
Guinea Pigs
|
(less than 350) |
60 |
7 |
| |
>350d |
>101 |
7 |
a To convert
square inches to square centimeters, multiply by 6.45.
b From cage floor to cage top.
c To convert inches to centimeters, multiply by 2.54.
d Larger animals might require more space to meet the
performance standards
(see text).
|
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Recommended Space for Rabbits, Cats, Dogs, Nonhuman Primates, and Birds
| Animals |
Weight,
g |
Floor Area/Animal,
in2 (a) |
Height(b),
in (c) |
|
Rabbits
|
(less than 2) |
1.5 |
14 |
| |
Up to 4 |
3.0 |
14 |
| |
Up to 5.4 |
4.0 |
14 |
| |
>5.4 (e) |
>5.0 |
14 |
|
Cats
|
(less than 4) |
3.0 |
24 |
| |
>4 (e) |
>4.0 |
24 |
|
Dogs (f)
|
<15 |
8.0 |
-- |
| |
Up to 30 |
12.0 |
-- |
| |
>30 (e) |
>24.0 |
-- |
|
Monkeys (g,h)
(including baboons)
|
| Group 1 |
Up to 1 |
1.6 |
20 |
| Group 2 |
Up to 3 |
3.0 |
30 |
| Group 3 |
Up to 10 |
4.3 |
30 |
| Group 4 |
Up to 15 |
6.0 |
32 |
| Group 5 |
Up to 25 |
8.0 |
36 |
| Group 6 |
Up to 30 |
10.0 |
46 |
| Group 7 |
>30 (e) |
15.0 |
46 |
| Apes (Pongidae)
(h) |
| Group 1 |
Up to 20 |
10.0 |
55 |
| Group 2 |
Up to 35 |
15.0 |
60 |
| Group 3 |
>35 (I) |
25.0 |
84 |
|
Pigeons (j)
|
-- |
0.8 |
-- |
|
Quail (j)
|
-- |
0.25 |
-- |
|
Chickens (j)
|
(less than 0.25) |
0.25 |
-- |
| |
Up to 0.5 |
0.50 |
-- |
| |
Up to 1.5 |
1.00 |
-- |
| |
Up to 3.0 |
2.00 |
-- |
| |
>3.0 (e) |
>3.00 |
-- |
a To convert
kilograms to pounds, multiply by 2.2.
b To convert square feet to square meters, multiply by 0.09.
c From cage floor to cage top.
d To convert inches to centimeters, multiply by 2.54.
e Larger animals might require more space to meet performance
standards (see text).
f These recommendations might require modification according
to body conformation of individual animals and breeds. Some dogs,
especially those toward upper limit of each weight range, might
require additional space to ensure compliance with the regulations
of the Animal Welfare Act. These regulations (CFR 1985) mandate that
the height of each cage be sufficient to allow occupant to stand in
"comfortable position" and that the minimal square feet of
floor space be equal to "mathematical square of the sum of the
length of the dog in inches (measured from the tip of its nose to
the base of its tail) plus 6 inches; then divide the product by
144."
g Callitrichidae, Cebidae, Cercopithecidae, and Papio.
Baboons might require more height than other monkeys.
h For some species (e.g., Brachyteles, Hylobates,
Symphalangus, Pongo, and Pan), cage height should be such that an
animal can, when fully extended, swing from the cage ceiling without
having its feet touch the floor.
Cage-ceiling design should enhance brachiating movement.
i Apes weighing over 50 kg are more effectively housed in
permanent housing of masonry, concrete, and wire-panel structure
than in conventional caging.
j Cage height should be sufficient for the animals to stand
erect with their feet on the floor. |
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