by far the greatest amoiint of growth. 



3. ""hen either salmon viscera meal or salmon offal meal was in- 

 cluded in certain diets and fed while the water temperatures were about 

 h^° F.J the survivals and weight gains of the lots were significantly 

 lower than those lots being fed the same diets without meal. During 

 the warm-water period, the salmon wastp meals increased the growth 

 rate of the lots and had no measurable effect on the survivals. 



h. Vacuum-dried salmon vi scera meal produced significantly more 

 growth than either 100° tunnel-dried salmon viscera meal or flame-dried 

 salmon offal meal. 



5. Hake proved to be a satisfactory substitute for hog spleen in 

 meat-viscera mixture. 



6. The combination of hog liver and salmon viscera produced more 

 growth than a combination of hake and salmon viscera. The combination 

 of beef liver, hog liver and Salmon viscera produced more growth than 

 hog liver alone with salmon viscera, ■'^oth of the above comparisons 

 were made with diets containing high levels of salmon meal. 



7. Of the anti-anemic supplements, beef liver proved satisfactory 

 and herring stickwater did not. The use of crab meal instead of salmon 

 viscera meal with hog liver and salmon viscera prevented anemia also. 



8» When crab meal or a mixture of crab meal and salmon viscera 

 meal or salmon offal meal was substituted for one of the salmon waste 

 meals in these diets, the mortality rate was significantly lowered 

 furing the 12-week period when the water temperatures averaged i;5° F. 

 With a combination of crab meal and salmon viscera meal in the diet, 

 the final mean weight was significantly greater thain produced by a 

 comparable diet supplemented only with crab meal. With a combination 

 of crab meal cind salmon offal meal in the diet, the final mean weight 

 was significantly greater than produced by a comparable diet supplemented 

 only with crab meal, \ilth a combination of-^^wab meal and salmon offal 

 meal in the diet, the final Tnean weight wSts significantly greater than. 

 produced by a comparable diet supplemented only with salmon offal meal. 



9. The meat-viscera mixture without meal was recommended for cold- 

 water feeding. During warm-water periods, the same meat-viscera mix- 

 ture plus 10 per cent salriion waste meal was recommended. Hake was sub- 

 stituted for hog spleen in this meat-viscera combination with crab meal 

 and a salmon wastes meal also could be used as a production diet, but 

 only during warm- water periods. 



19 



