5~9周龄大午粉1号商品代蛋雏鸡对饲粮能量和蛋白质的需要量研究

张蒙, 李强, 刘平, 许利军, 苏坤, 王德贺, 周荣艳, 陈辉

doi:10.3969/j.issn.1006-267x.2018.07.013

动物营养学报 >

2018 , Vol. 30 >Issue 7: 2529 - 2540

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.07.013

禽营养 Poultry nutrition

5~9周龄大午粉1号商品代蛋雏鸡对饲粮能量和蛋白质的需要量研究

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1. 河北农业大学动物科技学院, 保定 071000;
2. 河北农业大学动物医学院, 保定 071000;
3. 河北大午农牧集团种禽有限公司, 保定 071000;
4. 保定市畜牧工作站, 保定 071000

张蒙(1989-),女,河南三门峡人,硕士研究生,从事动物营养与饲料科学研究。E-mail:1006387893@qq.com

收稿日期: 2017-12-07

网络出版日期: 2018-07-20

基金资助

国家蛋鸡产业技术体系（CARS-40-K20，CARS-40-S04）；保定市科学研究与发展计划项目（14ZN021）

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Study on Dietary Energy and Protein Requirements of Dawufen No.1 Commercial Layer Chicks Aged 5 to 9 Weeks

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1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China;
2. College of Veterinary Medicine, Hebei Agricultural University, Baoding 071000, China;
3. Hebei Dawu Farming and Animal Husbandry Group, Baoding 071000, China;
4. Baoding Livestock Husbandry Workstation, Baoding 071000, China

Received date: 2017-12-07

Online published: 2018-07-20

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摘要

本试验通过建立饲粮能量或蛋白质水平与生长性能、血清生化指标、器官指数等指标的回归模型，旨在确定5~9周龄大午粉1号商品代蛋雏鸡对饲粮能量和蛋白质的需要量。选取810只遗传背景相同、体重接近、健康状态良好的28日龄大午粉1号商品代蛋雏鸡，随机分为9组，每组6个重复，每个重复15只蛋雏鸡。采用3×3双因素试验设计，设定饲粮中能量水平分别为12.42、11.92和11.42 MJ/kg，蛋白质水平分别为18.75%、17.75%和16.75%，共配制9种试验饲粮。试验期为35 d。结果显示：1）随着饲粮能量水平的升高，蛋雏鸡9周龄时胫长、胸宽、龙骨长、血清甘油三酯含量呈上升的趋势，5~9周龄平均日增重呈先下降后上升的趋势。2）随着饲粮蛋白质水平的升高，蛋雏鸡9周龄时体重（终末体重）、胸宽以及5~9周龄平均日增重呈先升高后降低的趋势。3）饲粮能量水平与蛋白质水平的互作效应对9周龄大午粉1号商品代蛋雏鸡的胸宽、龙骨长、血清甘油三酯含量有显著影响（P<0.05）。4）通过对蛋雏鸡胸宽、龙骨长、血清甘油三酯含量与饲粮能量水平进行二次曲线拟合，得出饲粮适宜能量水平分别为11.420、11.483、11.379 MJ/kg，平均值为11.427 MJ/kg；通过对9周龄时体重与饲粮蛋白质水平二次曲线拟合，得到饲粮适宜蛋白质水平为17.902%。综合蛋雏鸡体尺指标、生长性能、器官指数和血清生化指标得出，5~9周龄大午粉1号商品代蛋雏鸡的能量和蛋白质需要量分别为11.427 MJ/kg、17.902%。

关键词： 大午粉1号商品代蛋雏鸡; 能量; 蛋白质; 需要量; 回归分析

本文引用格式

张蒙, 李强, 刘平, 许利军, 苏坤, 王德贺, 周荣艳, 陈辉 . 5~9周龄大午粉1号商品代蛋雏鸡对饲粮能量和蛋白质的需要量研究[J]. 动物营养学报, 2018 , 30(7) : 2529 -2540 . DOI: 10.3969/j.issn.1006-267x.2018.07.013

Abstract

Through setting up the regression models between dietary energy or protein levels and growth performance, serum biochemical indexes and organ indexes, the objective of this study was conducted to determine the dietary energy and protein requirements of Dawufen No.1 commercial layer chicks aged 5 to 9 weeks. Eight hundred and ten 28-day-old Dawufen No.1 commercial layer chicks with the same genetic background, similar body weight and good health were randomly divided into 9 groups with 6 replicates per group and 15 chicks per replicate. A 3×3 two-factor experiment design was adopted in this experiment. There were 9 diet were prepared, the energy level in the diet was 12.01, 12.51 and 13.01 MJ/kg, respectively, and the protein level in the diet was 19.81%, 20.81% and 21.81%, respectively. The experiment lasted for 35 days. The results showed as follows:1) with the increase of dietary energy level, the tibia length, chest breadth, keel length, serum triglyceride content of layer chicks aged 9 weeks were increased, while the average daily gain (ADG) of layer chicks aged 5 to 9 weeks was firstly decreased and then increased. 2) With the increase of dietary protein level, the body weight and chest breadth of layer chicks aged 9 weeks and the ADG of layer chicks aged 5 to 9 weeks were firstly increased and then decreased. 3) The interaction between energy and protein levels re had significant effects on the chest breadth, keel length and serum triglyceride content (P<0.05). 4) According to quadratic curve estimation of the dietary energy level and chest breadth, keel length, serum triglyceride content, the optimal dietary energy level was 11.420, 11.483 and 11.379 MJ/kg, which could be averaged to 11.427 MJ/kg. According to quadratic curve estimation of the dietary protein level and body weight, the optimal dietary protein level was 17.902%. Combined with the body size indexes, growth performance, and serum biochemical indexes, the dietary energy and crude protein requirements of Dawufen No.1 commercial layer chicks aged 5 to 9 weeks are 11.427 MJ/kg and 17.902%, respectively.

Key words： Dawufen No.1 commercial layer chicks; energy; protein; requirement; regression analysis

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