FISH MEAL IN ANIMAL FEEDING 389 



In feeding two kinds of herring meal to dairy cows, Isaachsen and 

 Ulvesli found that the meal lower in salt content gave the better 

 results of the two meals. 



According to Wilgreas (1924) importers of Hamburg, Germany, 

 stated that '' fish meal for feeding purposes should not contain more 

 than 10 per cent of oil or 3 per cent of salt." 



Haselhoff (1914) said that the salt content should not exceed 3 

 per cent. 



PALATABILITT OF FISH MEAL 



Archibald (1916) said that the palatability of fish meal is rela- 

 tively good. 



According to Templeton (1920) menhaden fish meal furnished by 

 the United States Department of Agriculture proved to be a palatable 

 feed and gave satisfactory gains. 



Thompson (1919) reported the successful feeding of frozen fish to 

 poultry during the winter in place of meat scrap ; and the Live Stock 

 Journal (1920) reported the successful feeding of fish meal to calves. 



In feeding swine, Hicks (1922) stated that the fish meal fed was 

 not relished and was therefore unsatisfactory. 



Manning (1929d) found that poultry receiving crab meal in the 

 radon had better appetites than those receiving meat meal. 



DIGESTIBILITY OF FISH MEAL 



Kaupp and Ivey (1922) reported the digestible nutrients of poul- 

 try feeds as determined by laboratory feeding tests. The coefficients 

 of digestibility for poultry of fish meal were : Organic matter, 91.60 

 per cent: crude protein, 91.48 per cent; fat, 92.24 per cent. The 

 average digestibility of these ingredients in fish meal ranked higher 

 than that of any other feed or feed concentrate tested. 



According to Isaachsen and Ulvesli (1926) the coefficients of di- 

 gestibility for herring meal as determined with sheep were 88 per 

 cent for protein, 95 per cent for fat, and 91 per cent for organic 

 matter. Likewise, the coefficients of digestibility for codfish meal, 

 determined in the same manner, were 90 per cent for protein and 

 95 per cent for fat. 



Lindsey and Smith (1914) carried on 47 single digestion experi- 

 ments with a variety of feedstuffs, using sheep as the experimental 

 animals. The basal ration consisted of hay, corn, and gluten. Fish 

 meal ranked relatively high in digestibility. 



Orr. Crichton, and Green (1922) found that the pig can absorb 

 over 90 per cent of the protein in fish meal. This fact was deter- 

 mined l)y carefully controlled metabolism experiments in which 

 anah'ses of the feces were made. 



AMOUNTS OF FISH MEAL COMMONLY FED IN THE RATION 



Orr. Crichton, and Green (1922) recommended: "For a growing 

 animal producing new tissue the proportion of protein to the other 

 energy-yielding constituents of the ration (i. e., nutritive ratio) 

 should be about 1 to 4 or 5 for young animals, and 1 to 6 or 7 for 

 animals reaching maturity." 



