Abdel-Fattah, S., Khattab, A., Abdelaziz, M. (2025). SUPPLEMENTAL THREONINE SUPPORTS PRODUCTIVE AND PHYSIOLOGICAL STATUS OF DIETARY-PROTEIN-RESTRICTED JAPANESE QUAIL. Egyptian Poultry Science Journal, (), -. doi: 10.21608/epsj.2025.42174.1116
Sayed Ahmed Abdel-Fattah; Ahmed Ahmed Khattab; Mrwan Abdelaziz Mahmoud Abdelaziz. "SUPPLEMENTAL THREONINE SUPPORTS PRODUCTIVE AND PHYSIOLOGICAL STATUS OF DIETARY-PROTEIN-RESTRICTED JAPANESE QUAIL". Egyptian Poultry Science Journal, , , 2025, -. doi: 10.21608/epsj.2025.42174.1116
Abdel-Fattah, S., Khattab, A., Abdelaziz, M. (2025). 'SUPPLEMENTAL THREONINE SUPPORTS PRODUCTIVE AND PHYSIOLOGICAL STATUS OF DIETARY-PROTEIN-RESTRICTED JAPANESE QUAIL', Egyptian Poultry Science Journal, (), pp. -. doi: 10.21608/epsj.2025.42174.1116
Abdel-Fattah, S., Khattab, A., Abdelaziz, M. SUPPLEMENTAL THREONINE SUPPORTS PRODUCTIVE AND PHYSIOLOGICAL STATUS OF DIETARY-PROTEIN-RESTRICTED JAPANESE QUAIL. Egyptian Poultry Science Journal, 2025; (): -. doi: 10.21608/epsj.2025.42174.1116
SUPPLEMENTAL THREONINE SUPPORTS PRODUCTIVE AND PHYSIOLOGICAL STATUS OF DIETARY-PROTEIN-RESTRICTED JAPANESE QUAIL
Articles in Press, Accepted Manuscript, Available Online from 19 May 2025
1Poultry Production Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
2Animal Production Department, Faculty of Agriculture, Tanta University, Tanta, Egypt
Abstract
Six-weeks experimental trial was conducted to evaluate effects of excess dietary threonine [Thr] (150% and 200% of NRC recommendations) with levels of 21% and 22% dietary protein on productive performance, blood biochemical parameters and small intestine histological structure of Japanese quail. Three hundred and fifteen one-day-old unsexed Japanese quail chicks were randomly assigned for seven experimental groups, 45 chicks each. T1 chicks were fed the basal (control) diet contained 24% crude protein; T2 and T3 birds were fed diets contained normal requirement of [Thr] with 22 and 21% crude protein, respectively; T4 and T5 quails received 22% crude protein with 150% or 200% [Thr], respectively; T6 and T7 were given 21% crude protein with 150% or 200% [Thr], respectively. The obtained results showed that [Thr] supplementations particularly 150%, improves quail productive performance and compensates dietary protein restriction. Plasma concentrations of total protein, albumin, HDL and glucose were increased significantly (P
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