Whey Solubles as a Source of Growth Factors in Chick Rations

Condensed Fish Press Water and Fish Liver Meal in Chick Rations ,

“…Berry, Carrick, Roberts, and Hauge (1943) pointed out that the proteins of soybean oil meal were of excellent quality, but that rations containing soybean oil meal as a sole protein supplement were deficient in certain vitamins which were adequately supplied by additions of small amounts of animal protein feeds. This work has been confirmed by Hammond and Titus (1944), who mention the necessity of supplementing a diet containing soybean oil meal as the sole protein supplement with adequate vitamins and minerals.…”

Fish Meal and the Response of Chicks to Antibiotics

“…For some years, evidence has been accumulating which indicated that certain feed ingredients such as fish meal, fish solubles, liver, dried milk, dried whey, dried distillers' solubles, and dried brewers' yeast contained an unidentified growth factor or factors required by chicks and poults- Berry et al (1943Berry et al ( , 1945, Bird et al (1948), Brant and Carver (1947), Combs et al (1948), Emerson et al (1949), Hammond and Titus (1944), Heuser et al (1946a,b), Hill (1948), Hill and Van Poucke (1947), Johnson et al (1942), McGinnis et al (1947), Mishler et al (1947Mishler et al ( , 1948, Nichol et al (1947), Novak et al (1947), Robblee et al (1947), Schumacher et al (1940), Synold et al (1943) and others. However these investigations were carried out prior to the identification of vitamin B12, which complicates the interpretation of the results.…”

Influence of Starting Rations upon Subsequent Growth

“…Berry et al (1943) have shown that animal protein feeds are of value for their vitamin content, and point out that when used in limited amounts these feeds are probably more practical as vitamin supplements than as protein supplements, since soybean oil meal, as the principal source of protein, gave quite satisfactory growth when certain pure vitamins were included in the diet.…”