动物营养学报 >

2021 , Vol. 33 >Issue 11: 6123 - 6136

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.11.014

禽营养与饲料 POULTRY NUTRITION AND FEED

8~18周龄如皋黄鸡粗蛋白质和代谢能需要量的研究

  • 卢建 ,
  • 曲亮 ,
  • 王星果 ,
  • 李永峰 ,
  • 马猛 ,
  • 窦套存 ,
  • 胡玉萍 ,
  • 郭军 ,
  • 李尚民 ,
  • 王克华
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  • 1. 中国农业科学院家禽研究所, 扬州 225125;
    2. 南京农业大学动物科技学院, 南京 210095
卢建(1985-),男,山东济宁人,副研究员,硕士,主要从事蛋鸡营养代谢与繁殖性能调控研究。E-mail:lujian1617@163.com

收稿日期: 2021-04-13

  网络出版日期: 2021-11-10

基金资助

现代农业产业技术体系建设专项资金（CARS-40-K01）；江苏省自然科学基金（BK20190240）；江苏现代农业产业技术体系建设项目（JATS[2020]355）；江苏省农业重大新品种创制项目（PZCZ201729）；扬州市"英才培育计划"（（2018）YZYC-040）

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Dietary Crude Protein and Metabolic Energy Requirements of Rugao Yellow Chickens Aged from 8 to 18 Weeks

  • LU Jian ,
  • QU Liang ,
  • WANG Xingguo ,
  • LI Yongfeng ,
  • MA Meng ,
  • DOU Taocun ,
  • HU Yuping ,
  • GUO Jun ,
  • LI Shangmin ,
  • WANG Kehua
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  • 1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
    2. College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China

Received date: 2021-04-13

  Online published: 2021-11-10

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摘要

本试验通过研究饲粮粗蛋白质（CP）和代谢能（ME）水平对8~18周龄如皋黄鸡生长性能、均匀度以及跖骨和鸡冠发育的影响，旨在确定8~18周龄如皋黄鸡CP和ME需要量。试验选用8周龄体况良好、体重接近的如皋黄鸡1 800只，随机分成15组，每组8个重复，每个重复15只鸡。采用5×3双因子完全随机试验设计，因子1为饲粮CP水平，设14.00%、14.75%、15.50%、16.25%和17.00% 5个水平；因子2为饲粮ME水平，设10.88、11.30和11.72 MJ/kg 3个水平。试验期10周（8~18周龄）。结果表明：1）饲粮CP水平显著影响蛋鸡18周龄体重（P<0.05），饲粮ME水平显著影响蛋鸡15、16、17和18周龄体重（P<0.05）。2）饲粮CP和ME水平均显著影响蛋鸡8~18周龄平均日增重（ADG）、平均日采食量（ADFI）和料重比（F/G，P<0.05）；此外，饲粮ME水平显著影响蛋鸡8~15周龄ADG和F/G以及16~18周龄ADFI （P<0.05）。3）饲粮CP水平显著影响蛋鸡8~15周龄、16~18周龄和8~18周龄平均日粗蛋白质摄入量（ADCPI）和粗蛋白质转化比（CPCR）以及8~18周龄代谢能转化比（MECR，P<0.05）。饲粮ME水平显著影响蛋鸡16~18周龄和8~18周龄ADCPI，8~15周龄、16~18周龄和8~18周龄的平均日代谢能摄入量（ADMEI）以及8~15周龄和8~18周龄CPCR和MECR （P<0.05）。4）饲粮ME水平显著影响蛋鸡15、16、17和18周龄体重变异系数（P<0.05）。5）饲粮CP和ME水平对15和18周龄蛋鸡跖长、冠长和冠高均无显著影响（P>0.05）。6）饲粮CP和ME水平对8~18周龄蛋鸡生长性能、均匀度以及跖骨和鸡冠发育的影响均不存在显著交互作用（P>0.05）。综合考虑生长性能、均匀度以及跖骨和鸡冠发育等指标，如皋黄鸡8~18周龄饲粮适宜CP水平为14.75%，适宜ME水平为11.72 MJ/kg。

关键词： 如皋黄鸡; 粗蛋白质; 代谢能; 生长性能; 跖骨和鸡冠发育

本文引用格式

卢建 , 曲亮 , 王星果 , 李永峰 , 马猛 , 窦套存 , 胡玉萍 , 郭军 , 李尚民 , 王克华 . 8~18周龄如皋黄鸡粗蛋白质和代谢能需要量的研究[J]. 动物营养学报, 2021 , 33(11) : 6123 -6136 . DOI: 10.3969/j.issn.1006-267x.2021.11.014

Abstract

This experiment was conducted to evaluate the effects of dietary crude protein (CP) and metabolic energy (ME) levels on growth performance, flock uniformity and shank and comb development of Rugao yellow chickens aged from 8 to 18 weeks, to determine the CP and ME requirements of Rugao yellow chickens aged from 8 to 18 weeks. One thousand and eight hundred 8-week-old healthy Rugao yellow chickens with similar body weight were assigned to 15 groups with 8 replicates per group and 15 hens per replicate. This experiment took a 5×3 factorial design with 5 dietary CP levels (14.00%, 14.75%, 15.50%, 16.25% and 17.00%) and 3 dietary ME levels (10.88, 11.30 and 11.72 MJ/kg). The trial period lasted for 10 weeks (8 to 18 weeks of age). The results showed as follows:1) the body weight of laying hens at 18 weeks of age was significantly affected by dietary CP level (P<0.05), and the body weight of laying hens at 15, 16, 17 and 18 weeks of age was significantly affected by dietary ME level (P<0.05). 2) The average daily weight gain (ADG), average daily feed intake (ADFI) and the ratio of feed to gain (F/G) of laying hens aged from 8 to 18 weeks were significantly affected by dietary CP and ME levels (P<0.05); besides, the ADG and F/G of laying hens aged from 8 to 15 weeks and the ADFI of laying hens aged from 16 to 18 weeks were significantly affected by dietary ME level (P<0.05). 3) The average daily crude protein intake (ADCPI) and the ratio of crude protein to gain (CPCR) of laying hens aged from 8 to 15 weeks, 16 to 18 weeks and 8 to 18 weeks, and the ratio of metabolic energy to gain (MECR) of laying hens aged from 8 to 18 weeks were significantly affected by dietary CP level (P<0.05). The ADCPI of laying hens aged from 16 to 18 weeks and 8 to 18 weeks, the average daily metabolic energy intake (ADMEI) of laying hens aged from 8 to 15 weeks, 16 to 18 weeks and 8 to 18 weeks, and the CPCR and MECR of laying hens aged from 8 to 15 weeks and 8 to 18 weeks were significantly affected by dietary ME level (P<0.05). 4) The body weight coefficient of variation of laying hens at 15, 16, 17, and 18 weeks of age was significantly affected by dietary ME level (P<0.05). 5) The shank length, comb length and comb height of laying hens at 15 and 18 weeks of age were not affected by dietary CP or ME levels (P>0.05). 6) Dietary CP and ME levels had no significant interaction in growth performance, flock uniformity and shank and comb development of laying hens aged from 8 to 18 weeks (P>0.05). In conclusion, comprehensive considering the indexes of growth performance, flock uniformity and shank and comb development, the appropriate dietary CP and ME levels for Rugao yellow chickens aged from 8 to 18 weeks are 14.75% and 11.72 MJ/kg, respectively.

Key words： Rugao yellow chickens; crude protein; metabolic energy; growth performance; shank and comb development

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