Lysine requirement of broiler chicks as affected by protein source and method of statistical evaluation.
1. An experiment was designed to test if the lysine requirement, expressed as g lysine/kg CP, was the same for several protein sources. 2. Groundnut meal, groundnut meal adjusted with indispensable amino acids or sesame meal supplied the dietary CP at 180 g/kg diet. Increments of lysine (1.5 g/kg diet) were added to each of these diets. 3. The gain, food intake and food efficiency responses of broiler chicks were analysed using a quadratic equation and a two-slope method. An estimate of lysine requirements was also obtained from a survey of college students. 4. The different methods produced widely different estimates of lysine requirement. 5. The average lysine requirement was estimated at 50.1 g lysine/kg CP for groundnut meal, 61.7 for adjusted groundnut meal and 54.9 for sesame meal. 6. Reasons for the effect of statistical analysis and protein source on lysine requirement are discussed.
Barbour
G
G
Department of Poultry Science, Ohio State University, Columbus 43210.
Latshaw
J D
JD
Bishop
B
B
D000818:Animals; D001699:Biometry; D002645:Chickens / Q000378:metabolism*; D004044:Dietary Proteins / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D008239:Lysine / Q000008:administration & dosage / Q000502:physiology*; D008297:Male; D009751:Nutritional Requirements
D004044:Dietary Proteins; D008239:Lysine