FISH MEAL IN ANIMAL FEEDING, WITH BIBLIOGRAPHY » 



By John Ruel Manning, Technologist 

 United States Bureau of Fisheries 



CONTENTS 



Page 



Introduction 371 



Acknowledgments 373 



General feeding value 373 



Superiority of fish meals over 



other feed concentrates 374 



Growth-promoting properties of 



fish meals 375 



Swine 375 



Cattle 382 



Poultry 383 



Fish 384 



Fur-bearing animals 384 



Effect of fish-meal feeding on 



milk production 385 



Effect of fish-meal feeding on 



butterfat content of milk 385 



Effect of fish-meal feeding on 



egg production 385 



Effect of fish-meal feeding on the 



quality of carcasses of swine_ 387 



Page 



General feeding value— Continued. 

 Effect of fish-meal feeding on 



odor of milk, eggs, and meat- 388 

 Effect of fish meals high in salt 



content on farm animals 388 



Palatability of fish meals 389 



Digestibility of fish meals 389 



Amounts of fish meal commonly 



fed in the ration "_ 389 



Proteins in fish meals 390 



Minerals in fish meals 391 



Vitamins in fish meals 393 



Composition of fish meals 395 



Manufacture of fish meals 306 



Effect of storage on fish meals 396 



Analyses of fish and shellfish 



meals 396 



Adulteration of fish meals 397 



Conclusions 397 



Bibliography 397 



INTRODUCTION 



There are two important steps in the oblio;ation of the research 

 worker in making known to the general public the results of his 

 work so that the greatest benefit from his efforts may accrue to man- 

 kind. The first is the formal publication of his report or manuscript 

 so that his coworkers may collaborate with him. The second obliga- 

 tion is to publish the practical aspects, the possibilities, and the 

 potential benefits to civilization which may be developed from the 

 knowledge made available by his work. Many scientists uninten- 

 tionally neglect this second phase in their responsibilities to the 

 public. Many excellent scientific accomplishments have remained 

 buried in some archive or storehouse of science, locked from public 

 use, until a coworker comes along, appreciates the value of the work, 

 and makes it known to the public. 



Therefore, the purpose of this publication is to give a review and 

 bibliography of the researches and present scientific knowledge — 

 both American and foreign — in the field of the experimental feeding 

 of fish meals and shellfish meals to laboratory and farm animals, 

 including noncritical comments on the results of these researches. 

 Every effort has been made to condense the contents and to make 

 this treatise concise. The details, except the very essential ones of 



1 Appendix XII to the Report of the U. S. Commissioner of Fisheries for 1930. 

 Doc. 1090. Submitted for publication July 9, 1930. 



371 



B. F. 



