HUMANE TREATMENT OF ANIMALS USED IN RESEARCH 163 
TABLE 9 - AVERAGE AMOUNT OF FLOOR SPACE AVAILABLE FOR RESEARCH 
AMD FOR ANIMAL HOUSING (Expressed in square feet) 
Veterinary 
Schools (8) 
Medical & Dental 
Schools (35) 
Private 
Laboratories 
(5) 
Research 
Hospitals 
(8) 
Animal 
Housing 41,870 
14,313 
29,021 
3,316 
Research 43,440 
73,592 
57 ,057 
12,761 
TABLE 10 - NUMBER OF AIR CHANGES PER HOUR IN ANIMAL ROOMS 
(49 Institutions) 
Unknown air changes /hour 
- 
14.3% 
0-5 air changes/hour 
- 
16.3% 
6-10 air changes/hour 
- 
32.7% 
11-15 air changes/hour 
- 
28.6% 
16-20 air changes/hour 
- 
6.1% 
21-25 air changes/hour 
- 
2.0 % 
- 36 - 
