禽营养与饲料 POULTRY NUTRITION AND FEED

低蛋白质氨基酸平衡饲粮对黄羽肉种鸡产蛋性能、蛋品质、孵化性能和氮排放的影响

  • 林厦菁 ,
  • 范秋丽 ,
  • 苟钟勇 ,
  • 李龙 ,
  • 王一冰 ,
  • 蒋守群
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  • 广东省农业科学院动物科学研究所, 畜禽育种国家重点实验室, 农业部农村部华南动物营养与饲料重点实验室, 广东省畜禽育种与营养研究重点实验室, 广州 510640
林厦菁(1988-),女,福建尤溪人,助理研究员,硕士,从事黄羽肉鸡营养与饲料科学研究。E-mail:93783419@qq.com

收稿日期: 2020-07-13

  网络出版日期: 2021-02-04

基金资助

国家重点研发计划(2018YFD0500600);国家肉鸡产业技术体系项目(CARS-41-G10);国家自然科学基金青年基金项目(31802104);广东省科技计划项目(2017B020202003);广州市科技计划重点项目(201804020091);广东省农业科学院院长基金项目(201805,201807B,201809B,201908);科技创新战略专项资金(高水平农科院建设)(R2019PY-QF008)

Effects of Low Protein Amino Acid Balance Diet on Laying Performance, Egg Quality, Hatching Performance and Nitrogen Excretion of Yellow-Feathered Broiler Breeders

  • LIN Xiajing ,
  • FAN Qiuli ,
  • GOU Zhongyong ,
  • LI Long ,
  • WANG Yibing ,
  • JIANG Shouqun
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  • Institute of Animal Science, Guangdong Academy of Agricultural Sciences, State Key Laboratory of Livestock and Poultry Breeding, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangzhou 510640, China

Received date: 2020-07-13

  Online published: 2021-02-04

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摘要

本试验旨在研究低蛋白质氨基酸平衡饲粮对黄羽肉种鸡生产性能、蛋品质、孵化性能和氮排放的影响。选用30周龄健康的快大型岭南黄羽肉种母鸡288只,根据体重和产蛋率相近原则,随机分为4个组,每组6个重复,每个重复12只鸡。各组饲粮粗蛋白质(CP)水平分别为16%(对照组)、15%、14%、13%,各组的赖氨酸、蛋氨酸、色氨酸、苏氨酸、缬氨酸、亮氨酸及异亮氨酸水平一致。试验期10周。结果表明:1)低蛋白质氨基酸平衡饲粮对黄羽肉种鸡末重、平均日增重、平均日产蛋量、料蛋比、平均蛋重、产蛋率、破蛋率和不合格蛋率均无显著影响(P>0.05)。2)低蛋白质氨基酸平衡饲粮对黄羽肉种鸡鸡蛋的蛋形指数、蛋白高度、哈氏单位、蛋黄重、蛋壳重和蛋壳厚度均无显著影响(P>0.05)。13% CP组的蛋黄颜色显著高于16% CP组(P<0.05)。3)低蛋白质氨基酸平衡饲粮对黄羽肉种鸡的雏鸡初生重、受精蛋孵化率、弱雏率和受精率均无显著影响(P>0.05)。4)13%、14% CP组的血浆尿素氮含量显著低于16% CP组(P<0.05),13% CP组的血浆尿酸含量显著低于16% CP组(P<0.05),13% CP组的粪便氮含量显著低于16% CP组(P<0.05)。由此可见,低蛋白质氨基酸平衡饲粮对黄羽肉种鸡的生产性能、蛋品质和孵化性能无负面影响,但能够降低血浆尿素氮、尿酸含量和粪便氮含量。本试验条件下,黄羽肉种鸡产蛋高峰期的饲粮CP水平可以降低至13%(补充7种必需氨基酸)。

本文引用格式

林厦菁 , 范秋丽 , 苟钟勇 , 李龙 , 王一冰 , 蒋守群 . 低蛋白质氨基酸平衡饲粮对黄羽肉种鸡产蛋性能、蛋品质、孵化性能和氮排放的影响[J]. 动物营养学报, 2021 , 33(2) : 802 -810 . DOI: 10.3969/j.issn.1006-267x.2021.02.021

Abstract

This experiment was conducted to investigate the effects of low protein amino acid balance diet on laying performance, egg quality, hatching performance and nitrogen excretion of yellow-feathered broiler breeders. Two hundred and eighty-eight 30-week-old Lingnan yellow-feathered breeder hens were randomly divided into 4 groups with 6 replicates per group and 12 broilers per replicate. The crude protein (CP) levels of 4 groups were 16% (control group), 15%, 14% and 13%, respectively, and the levels of lysine, methionine, tryptophan, threonine, valine, leucine and isoleucine of 4 groups were the same. The experiment lasted for 10 weeks. The results showed as follows: 1) low protein amino acid balance diet had no significant effects on final weight, average daily gain, average daily egg mass, feed intake/egg mass, average egg weight, laying rate, broken egg rate and unqualified egg rate of yellow-feathered broiler breeders (P>0.05). 2) Low protein amino acid balance diet had no significant effects on egg shape index, albumen height, Haugh unit, yolk weight, yolk weight, egg shell weight and egg shell thickness of yellow-feathered broiler breeders (P>0.05). The yolk color of 13% CP group was significantly higher than that of 16% CP group (P<0.05). 3) Low protein amino acid balance diet has no significant effects on the birth weight of chick, hatchability of fertilized eggs, unhealthy rate of chick and fertilization rate of yellow-feathered broiler breeders (P>0.05). 4) The plasma urea nitrogen of 13% and 14% CP groups was significantly lower than that of 16% CP group (P<0.05), the plasma uric acid content of 13% CP group was significantly lower than that of 16% CP group (P<0.05), the feces nitrogen content of 13% CP group was significantly lower than that of 16% CP group (P<0.05). In conclusion, low protein amino acid balance diet has no negative effects on performance, egg quality and hatching performance of yellow-feathered broiler breeders, but can decrease the contents of urea and urea nitrogen in plasma and feces nitrogen content. Under this experimental condition, the dietary CP level of yellow-feathered broiler breeders can be reduced to 13% (supplemented with 7 kinds of essential amino acids).

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