CONTENTS 
Page 
The Federal Government's Use of Animals 43 
Federal Departments and Agencies Using Animals in Research 44 
Patterns of Federal Animal Use 46 
Animal Use in the United States 49 
Limitations of Animal-Use Study 50 
Critical Evaluation of Animal-Use Estimates 52 
Calculating Rat and Mouse Usage 57 
Summary and Analysis of Estimates 58 
Future Animal Censuses 65 
Summary and Conclusions 65 
Chapter 3 References 67 
List of Tables 
Table No. Page 
3-1. Research-Animal Use in the Federal Government, 
by Major Department and Division for Fiscal Year 1983 50 
3-2. Total Numbers of Animals Used in Federal Government Facilities 
as Reported to Congress in APHIS Animal Welfare 
Enforcement Reports, 1978-83 51 
3-3. Reliability of Various Data Sources 54 
3-4. Estimates of Rat and Mouse Usage in Laboratories, 1978, 1982, 1983 59 
3-5. Various Estimates of the Number of Animals Used in the United States .... 60 
3-6. USDA/APHIS Data, Changes 1982-83 : 64 
3-7. Animal Use Reported to the U.S. Department of Agriculture, 
1982 and 1983 66 
List of Figures 
Figure No. Page 
3-1. USDA/APHIS “Annual Report of Research Facility” 48 
3-2. Example A of APHIS “Annual Report of Research Facility” 61 
3-3. Example B of APHIS “Annual Report of Research Facility” 62 
3-4. Example C of APHIS “Annual Report of Research Facility” 63 
