United States Department of the Interior, Oscar L. Chapman, Secretary 

 Fish and Vifildlife Service, Albert M. Day, Director 



Special Scientific Report; fisheries No. 86 



TESTS OF HATCHER! FOODS FOR SALMON 19^1 

 by 



Roger E. 3urrows, David D. Palmer, 

 H. William Newman and Robert L. Azevedo 

 Fishery Research Biologists 

 U. S. Fish and Wildlife Service 



CONTENTS 



Page 



Conditions of Experiments 2 



Results of Experiments 2 



First Experiment, Cold-Water Phase 2 



First Experiment, 2U-T^9ek Period 9 



Second Experiment 12 



Third Experi.uent 17 



Summary of Results 20 



Acknowledgements 21 



Literature Cited 22 



TABLES 

 No. Page 



1. Feeding chart for chinook salmon expressed as the percentage 



of the body vreight to be fed per day 3 



2. Sunnary of 19^1 feeding trials with blueback salmon — 



First Experiaent, Cold-Water phase 5 



3. Summary of 19^1 feeding trials with blueback salmon — 



First Experiment, 2li-week period 11 



k- 3ur.imary of 1951 feeding trials with blueback salmon — 



Second Experiment, 12-week period 13 



5. Summary of 19^1 feeding trials with chinook salmon — 



Third Experiment, 2li.-week period 19 



