Calculation and Evaluation of Energy: Amino Acid Ratios for the Egg-Production Type Hen
作者： P.J. SLAGTER , P.W. WALDROUP
DOI: 10.3382/PS.0631810
关键词:
摘要: Abstract Published equations for estimating the daily energy needs of laying hens were combined with published amino acid to derive estimated energy: ratios at different stages production and environmental temperatures. Two feeding trials conducted using various percentages suggested determine their applicability. The results these studies indicate that calculated appeared support levels comparable those fed higher nutrient levels. use temperature-adjusted appears be a valid feasible means formulating diets meet changing nutritional hens.
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sci-hub.se 参考文章(9)
Gilbert A. Leveille, Hans Fisher, The amino acid requirements for maintenance in the adult rooster. I. Nitrogen and energy requirements in normal and protein-depleted animals receiving whole egg protein and amino acid diets. Journal of Nutrition. ,vol. 66, pp. 441- 453 ,(1960) , 10.1093/JN/66.3.441
S. Hurwitz, S. Bornstein, The Protein and Amino Acid Requirements of Laying Hens: Suggested Models for Calculation Poultry Science. ,vol. 52, pp. 1124- 1134 ,(1973) , 10.3382/PS.0521124
W. O. Brown, J. J. Waring, E. Squance, A study of the effect of variation in the calorie‐protein ratio of a medium energy diet and a high energy diet containing sucrose on the efficiency of egg production in caged layers British Poultry Science. ,vol. 6, pp. 59- 66 ,(1965) , 10.1080/00071666508415553
David B. Duncan, MULTIPLE RANGE AND MULTIPLE F TESTS Biometrics. ,vol. 11, pp. 1- 42 ,(1955) , 10.2307/3001478
M. W. McDonald, Feed Intake of Laying Hens Worlds Poultry Science Journal. ,vol. 34, pp. 209- 221 ,(1978) , 10.1079/WPS19960041
P.W. Waldroup, R.J. Mitchell, J.R. Payne, K.R. Hazen, Performance of Chicks Fed Diets Formulated to Minimize Excess Levels of Essential Amino Acids Poultry Science. ,vol. 55, pp. 243- 253 ,(1976) , 10.3382/PS.0550243
H.J. Hochreich, C.R. Douglas, I.H. kidd, R.H. Harms, The Effect of Dietary Protein and Energy Levels upon Production of Single Comb White Leghorn Hens Poultry Science. ,vol. 37, pp. 949- 953 ,(1958) , 10.3382/PS.0370949
W. K. Smith, The Amino Acid Requirements of Laying Hens: Models for Calculation. I Physiological Background Worlds Poultry Science Journal. ,vol. 34, pp. 81- 96 ,(1978) , 10.1079/WPS19960030
W. K. Smith, The Amino Acid Requirements of Laying Hens: Models for Calculation 2. Practical Application Worlds Poultry Science Journal. ,vol. 34, pp. 129- 136 ,(1978) , 10.1079/WPS19960033