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Comparative study on the methods for measuring basal endogenous amino acid losses of broiler chickens.

Yao Junhu, Kangning Wang, Yang Feng, Zhou An-guo

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Abstract

Basal endogenous amino acid losses(EAAEb) in the 48h excreta of broiler chickens were directly determined by force-feeding nitrogen-free diet (NFD),NFD+3.39% balanced amino acids (AAs),NFD+6.81%AAs,NFD+3.20% enzyme hydrolysed casein (EHC),and NFD+6.40%EHC diets.EAAEb was also estimated by regression method (REG) by force-feeding diets with 5%,10%,20% and 30% crude protein(CP) contents in which soybean meal(sol.)was the sole nitrogen source.The results showed that the EAAEb measured by the above methods differed not significantly (P0.05)and there was a constant EAAEb in broiler chickens.

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What this paper is about

Basal endogenous amino acid losses(EAAEb) in the 48h excreta of broiler chickens were directly determined by force-feeding nitrogen-free diet (NFD),NFD+3.39% balanced amino acids (AAs),NFD+6.81%AAs,NFD+3.20% enzyme hydrolysed casein (EHC),and NFD+6.40%EHC diets.EAAEb was also estimated by regression method (REG) by force-feeding diets with 5%,10%,20% and 30% crude protein(CP) contents in which soybean meal(sol.)was the sole nitrogen source.The results showed that the EAAEb measured by the above methods differed not significantly (P0.05)and there was a constant EAAEb in broiler chickens.

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Available abstract

Basal endogenous amino acid losses(EAAEb) in the 48h excreta of broiler chickens were directly determined by force-feeding nitrogen-free diet (NFD),NFD+3.39% balanced amino acids (AAs),NFD+6.81%AAs,NFD+3.20% enzyme hydrolysed casein (EHC),and NFD+6.40%EHC diets.EAAEb was also estimated by regression method (REG) by force-feeding diets with 5%,10%,20% and 30% crude protein(CP) contents in which soybean meal(sol.)was the sole nitrogen source.The results showed that the EAAEb measured by the above methods differed not significantly (P0.05)and there was a constant EAAEb in broiler chickens.

Key concepts: Broiler, Casein, Amino acid, Basal (medicine), Endogeny, Soybean meal, Food science, Animal science

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Comparative study on the methods for measuring basal endogenous amino acid losses of broiler chickens. — Research Paper | ScholarLens