研究论文 RESEARCH PAPER

饲粮代谢能水平对3~8周龄如皋黄鸡生长发育和血清生化指标的影响

  • 卢建 ,
  • 王克华 ,
  • 杨晓东 ,
  • 马猛 ,
  • 李永峰 ,
  • 李尚民 ,
  • 郭军 ,
  • 王星果 ,
  • 窦套存 ,
  • 胡玉萍 ,
  • 曲亮
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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;
    3. 扬州翔龙禽业发展有限公司, 江都 225261
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: 2021-09-15

  网络出版日期: 2022-04-14

基金资助

江苏现代农业产业技术体系建设项目(JATS[2021]068);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]

Effects of Dietary Metabolic Energy Level on Growth and Development and Serum Biochemical Indexes of Rugao Yellow Chickens Aged from 3 to 8 Weeks

  • LU Jian ,
  • WANG Kehua ,
  • YANG Xiaodong ,
  • MA Meng ,
  • LI Yongfeng ,
  • LI Shangmin ,
  • GUO Jun ,
  • WANG Xingguo ,
  • DOU Taocun ,
  • HU Yuping ,
  • QU Liang
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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;
    3. Xianglong Poultry Development Co., Ltd., of Yangzhou, Jiangdu 225261, China

Received date: 2021-09-15

  Online published: 2022-04-14

摘要

本试验旨在研究饲粮代谢能(ME)水平对3~8周龄如皋黄鸡生长发育和血清生化指标的影响。选用2周龄体况良好、体重接近的如皋黄鸡900只,随机分成5组,每组6个重复,每个重复30只鸡。各组试验鸡分别饲喂ME水平为11.11、11.51、11.92、12.34和12.78 MJ/kg的试验饲粮。预试期1周,正试期6周。结果表明:1)随饲粮ME水平增加,5和8周龄蛋鸡体重,8周龄跖长,6~8周龄和3~8周龄平均日采食量(ADFI)和平均日粗蛋白质摄入量(ADCPI),3~5周龄和3~8周龄平均日增重(ADG)以及3~5周龄、6~8周龄和3~8周龄平均日代谢能摄入量(ADMEI)均呈先降低后升高的二次曲线变化(P<0.05);8周龄体重变异系数(CV)及3~5周龄和3~8周龄代谢能转化比(MECR)均呈先升高后降低的二次曲线变化(P<0.05);3~5周龄、6~8周龄和3~8周龄料重比(F/G)和粗蛋白质转化比(CPCR)均线性降低(P<0.05)。2)除翅膀率和肝脏率外,饲粮ME水平对屠体、免疫器官和消化道发育指标均无显著影响(P>0.05),肝脏率随饲粮ME水平增加线性降低(P<0.05)。3)股骨长和胫骨强度均随饲粮ME水平增加呈先降低后升高的二次曲线变化(P<0.05)。4)随饲粮ME水平增加,血清尿素氮(UN)含量呈先降低后升高的二次曲线变化(P<0.05),而血清高密度脂蛋白(HDL)和低密度脂蛋白(LDL)含量分别线性升高和降低(P<0.05)。由此可见,3~8周龄如皋黄鸡饲粮ME水平为11.11和12.78 MJ/kg时能获得较好的生长性能,12.78 MJ/kg饲粮组F/G、CPCR、跖长及血清HDL、LDL和UN含量等指标均表现出优势。

本文引用格式

卢建 , 王克华 , 杨晓东 , 马猛 , 李永峰 , 李尚民 , 郭军 , 王星果 , 窦套存 , 胡玉萍 , 曲亮 . 饲粮代谢能水平对3~8周龄如皋黄鸡生长发育和血清生化指标的影响[J]. 动物营养学报, 2022 , 34(4) : 2301 -2313 . DOI: 10.3969/j.issn.1006-267x.2022.04.026

Abstract

This experiment was conducted to evaluate the effects of dietary metabolic energy (ME) level on growth and development and serum biochemical indexes of Rugao yellow chicken aged from 3 to 8 weeks. Nine hundred healthy 2-week-old Rugao yellow chickens with similar body weight were assigned to 5 groups with 6 replicates per group and 30 hens per replicate. Hens in five groups were fed experimental diets with ME levels of 11.11, 11.51, 11.92, 12.34 and 12.78 MJ/kg, respectively. The pre-experimental period lasted for 1 week, and the experimental period lasted for 6 weeks. The results showed as follows:1) with the dietary ME level increased, the body weight of hens at 5 and 8 weeks of age, the shank length of hens at 8 weeks of age, the average daily feed intake (ADFI) and the average daily crude protein intake (ADCPI) during 6 to 8 weeks of age and 3 to 8 weeks of age, the average daily weight gain (ADG) during 3 to 5 weeks of age and 3 to 8 weeks of age, and the average daily metabolic energy intake (ADMEI) during 3 to 5 weeks of age, 6 to 8 weeks of age and 3 to 8 weeks of age showed a firstly decreased and then increased quadratic change (P<0.05); the body weight coefficient of variation (CV) at 8 weeks of age and the ratio of metabolic energy to gain (MECR) during 3 to 5 weeks of age and 3 to 8 weeks of age showed a firstly increased and then decreased quadratic change (P<0.05); and the ratio of feed to gain (F/G) and the ratio of crude protein to gain (CPCR) during 3 to 5 weeks of age, 6 to 8 weeks of age and 3 to 8 weeks of age linearly decreased (P<0.05). 2) The development indexes of carcass, immune organ and digestive tract were not affected by dietary ME level (P>0.05), with the exception of the wing rate and liver rate. 3) The femur length and tibia strength showed a firstly decreased and then increased quadratic change with dietary ME level increased (P<0.05). 4) With the dietary ME level increased, the serum urea nitrogen (UN) content showed a firstly decreased and then increased quadratic change (P<0.05), the serum high density lipoprotein (HDL) content linearly increased (P<0.05), and the serum low density lipoprotein (LDL) content linearly decreased (P<0.05). In conclusion, the growth performance of Rugao yellow chickens is the best when the dietary ME levels are 11.11 and 12.78 MJ/kg for Rugao yellow chickens during 2 to 8 weeks of age, and the F/G, CPCR, shank length and contents of HDL, LDL and UN in serum of laying hens in 12.78 MJ/kg diet group are superior.

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