scholarly journals Protein Level and Amino Acid Balance in the Laying Ration

1964 ◽  
Vol 43 (1) ◽  
pp. 98-105 ◽  
Author(s):  
Jacob Biely ◽  
B.E. March
Keyword(s):  
Amino Acid ◽  
Protein Level ◽  
Amino Acid Balance

THE EFFECT OF PROTEIN LEVEL AND AMINO ACID BALANCE UPON THYROID ACTIVITY IN THE CHICK

1964 ◽  
Vol 42 (3) ◽  
pp. 341-344 ◽  
Author(s):  
B. E. March ◽  
Jacob Biely ◽  
K. R. Pastro
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Dietary Protein ◽  
Protein Level ◽  
Thyroid Activity ◽  
Thyroid Glands ◽  
Amino Acid Imbalance ◽  
Methionine Supplementation ◽  
Amino Acid Balance

Chicks fed diets containing 26% of protein had larger thyroid glands than did chicks fed diets containing 17.5% of protein. Thyroidal uptake of I131 per chick was also greater in the chicks fed the higher level of protein. The basal diets were deficient in methionine. Supplementation of the diets with lysine, which would aggravate the amino acid imbalance, significantly depressed thyroidal uptake of I131 per chick. It is concluded that the amino acid composition of dietary protein, as well as the protein level in the diet, affects thyroid activity in the chick.

scholarly journals The Effects of Protein Level and Amino Acid Balance in Wheat-Based Laying Rations

1972 ◽  
Vol 51 (2) ◽  
pp. 547-557 ◽  
Author(s):  
B.E. March ◽  
Jacob Biely
Keyword(s):  
Amino Acid ◽  
Protein Level ◽  
Amino Acid Balance

NUTRITIVE AND ECONOMIC EVALUATION OF WHEAT CULTIVARS WITH VARYING PROTEIN LEVELS: AMINO AND FATTY ACID COMPOSITION AND PERFORMANCE IN CHICK AND POULT DIETS

1974 ◽  
Vol 54 (4) ◽  
pp. 619-628 ◽  
Author(s):  
R. E. SALMON ◽  
K. E. DUNKELGOD
Keyword(s):  
Growth Rate ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Amino Acid ◽  
Acid Composition ◽  
Protein Level ◽  
Meat Production ◽  
Wheat Cultivars ◽  
Lower Protein ◽  
Amino Acid Balance

Wheat cultivars ranging in crude protein from 10.8 to 17.1% were fed in computer formulated diets to chicks and poults. The growth rate of chicks increased as the protein level of wheat decreased in order of cultivars Chinook, Inia 66, Glenlea and Lemhi 53. The differences were related to the dietary amino acid balance and are attributed in part to the improved amino acid balance of the lower protein wheats and also to the greater proportion of soybean meal used in the diets containing lower protein wheats. Poults fed Chinook and Pitic grew more rapidly than those fed either Inia 66 or Glenlea, but not Lemhi 53. The growth rate of poults was not related to the protein level of the wheat. Feed conversion of diets based on Chinook, Inia 66, Glenlea and Lemhi 55 did not differ in either chick or poult studies. The diet based on Pitic 62, fed only to poults, was more efficiently converted than diets based on the other wheat cultivars. The cost of meat production increased with both chicks and poults as the protein level of the wheat decreased with the ingredient prices that prevailed at the time of study. Amino acid composition of the wheat cultivars fed, and fatty acid composition of a total of 30 wheat cultivars are presented.

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