典型文献
Protein sources and starch-protein digestive dynamics manipulate growth performance in broiler chickens defined by an equilateral-triangle response surface design
文献摘要：
A total of 360 male,off-sex Ross 308 chicks were offered 10 dietary treatments from 14 to 35 d post-hatch in an equilateral-triangle response surface design feeding study in order to confirm the impor-tance of protein and amino acid digestive dynamics in broiler chickens.The 3 apical diets were nutritionally-equivalent containing either soybean meal,non-bound amino acids or whey protein concentrate as the major source of dietary protein and amino acids.Appropriate blends of the 3 apical diets comprised the balance of 7 diets and each dietary treatment was offered to 6 replicate cages with 6 birds per cage.Growth performance,nutrient utilisation,apparent protein and starch digestibility co-efficients were determined in 4 small intestinal segments.The optimal weight gain(2,085 g/bird)and feed conversion ratios(FCR,1.397)were generated by Diet 50S50W which included a 50:50 blend of apical diets rich in whey protein concentrate and soybean meal.Broiler chickens offered Diet 50S50W also had the highest experimental and predicted jejunal digestibility(0.685 in proximal jejunum and 0.823 in distal jejunum).FCR was not correlated with apparent distal ileal digestibility coefficient(P＞0.05)of protein but was correlated with apparent protein digestibility in proximal jejunum(r=-0.369,P=0.040)and distal jejunum(r=-0.316,P=0.015).Surplus dietary starch was correlated with increased fat pad weight(r=0.781,P=0.008).The findings confirmed the relevance of protein digestion rate,reflected by jejunal digestibility,on feed conversion of broiler chickens.A balance between protein-bound and non-bound crystalline or synthetic amino acids may be required for optimal growth and protein digestion.
文献关键词：
中图分类号：
作者姓名：
Shemil P.Macelline;Peter V.Chrystal;Peter H.Selle;Sonia Y.Liu
作者机构：
Poultry Research Foundation,The University of Sydney,Camden NSW 2570,Australia;School of Life and Environmental Sciences,Faculty of Science,The University of Sydney,Sydney NSW 2006,Australia;Sydney School of Veterinary Science,The University of Sydney,Sydney NSW 2006,Australia
文献出处：
引用格式：
[1]Shemil P.Macelline;Peter V.Chrystal;Peter H.Selle;Sonia Y.Liu-.Protein sources and starch-protein digestive dynamics manipulate growth performance in broiler chickens defined by an equilateral-triangle response surface design)[J].动物营养（英文）,2022(02):204-213
A类：
50S50W,Broiler
B类：
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AB值：
0.475255
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
