产蛋后期笼养攸县麻鸭蛋氨酸需要量研究  

Methionine Requirement of Youxian Partridge Ducks during Late-Laying Period

作　　者：黄璇[1,2] 姚玥州 李闯 张旭[1,2] 李震威 蒋桂韬[1,2] 胡艳 戴求仲 HUANG Xuan;YAO Yuezhou;LI Chuang;ZHANG Xu;LI Zhenwei;JIANG Guitao;HU Yan;DAI Qiuzhong(Animal Nutrition and Feeding Technology Research Lab,Hunan Institute of Animal Science and Veterinary Medicine,Changsha 410131,China;Hunan Engineering Research Center of Poultry Production Safety,Changsha 410128,China;College of Animal Science and Technology,Hunan Agricultural University,Changsha 410128,China;Youxian Animal Husbandry and Aquatic Transaction Center,Youxian 412300,China)

机构地区：[1]湖南省畜牧兽医研究所,动物营养与饲养技术研究室,长沙410131 [2]湖南家禽安全生产工程技术研究中心,长沙410128 [3]湖南农业大学动物科技学院,长沙410128 [4]攸县畜牧水产事务中心,攸县412300

出　　处：《动物营养学报》2021年第10期5637-5644,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：现代农业产业技术体系建设专项资金(CARS-42-21);湖南家禽安全生产工程技术中心专项资金(CICAPS)。

摘　　要：本试验旨在研究饲粮蛋氨酸水平对笼养攸县麻鸭产蛋性能、蛋品质、血清生化和抗氧化指标的影响,以确定攸县麻鸭产蛋后期蛋氨酸需要量。选取健康状况良好、产蛋率相近的56周龄攸县麻鸭300羽,随机分成5组,每组6个重复,每个重复10羽。各组分别饲喂蛋氨酸水平为0.27%、0.33%、0.39%、0.45%和0.51%的试验饲粮。试验期9周。结果表明:1)0.39%和0.45%蛋氨酸水平组日产蛋量显著高于0.27%蛋氨酸水平组(P<0.05),0.39%蛋氨酸水平组料蛋比显著低于0.27%和0.33%蛋氨酸水平组(P<0.05)。2)0.27%蛋氨酸水平组哈氏单位显著低于其他各组(P<0.05)。3)0.45%和0.51%蛋氨酸水平组血清谷胱甘肽过氧化物酶(GSH-Px)活性显著高于0.27%和0.33%蛋氨酸水平组(P<0.05),0.39%、0.45%和0.51%蛋氨酸水平组血清谷胱甘肽(GSH)含量显著高于0.27%蛋氨酸水平组(P<0.05),0.39%和0.45%蛋氨酸水平组血清过氧化氢酶(CAT)活性显著高于0.27%蛋氨酸水平组(P<0.05)。4)回归分析结果显示,以日产蛋量、料蛋比、哈氏单位和血清CAT活性为评价依据,产蛋后期攸县麻鸭蛋氨酸需要量分别为0.413%、0.418%、0.451%和0.417%。由此可见,饲粮蛋氨酸水平为0.39%时即可提高产蛋后期攸县麻鸭产蛋性能和蛋品质,但饲粮蛋氨酸水平为0.45%时可获得较佳的抗氧化能力。在本试验条件下,产蛋后期攸县麻鸭蛋氨酸需要量为0.41%~0.45%。This experiment was conducted to study the effects of dietary methionine level on laying performances,egg quality and serum biochemical and antioxidant indices of Youxian partridge ducks,and to evaluate methionine requirement of Youxian partridge ducks during late-laying period. A total of 300 healthy 56 weeks old Youxian partridge ducks with similar laying rate were randomly divided into 5 groups with 6 replicates in each group and 10 ducks in each group. The dietary methionine levels of five groups were 0.27%,0.33%,0.39%,0.45% and 0.51%,respectively. The experimental period lasted for 9 weeks. The results showed as followed:1)the daily egg yield of 0.39% and 0.45% methionine level groups was significantly higher than that of 0.27% methionine level group(P<0.05),and feed to egg ratio of 0.39% methionine level group was significantly lower than that of 0.27% and 0.33% methionine level groups(P<0.05). 2)The Haugh unit of0.27% methionine level group was significantly lower than that of other groups(P<0.05). 3)The serum glutathione peroxidase(GSH-Px)activity of 0.45% and 0.51% methionine level group was significantly higher than that of 0.27% and 0.33% methionine level groups(P<0.05),the serum glutathione(GSH)content of0.39%,0.45% and 0.51% methionine level groups was significantly higher than that of 0.27% methionine level group(P<0.05),and the serum catalase(CAT)activity of 0.39% and 0.45% methionine level group was significantly higher than that of 0.27% methionine level group(P<0.05). 4)The regression analysis results showed that based on the daily egg yield,feed to egg ratio,Haugh unit and serum CAT activity,the methionine requirements of Youxian partridge ducks during late-laying period were 0.413%,0.418%,0.451% and0.417%,respectively. In conclusion,it can improve egg laying performance and egg quality of Youxian partridge ducks during late-laying period when dietary methionine level is 0.39%,but it can obtain better antioxidant capacity when dietary methionine level is 0.45%. Under this experimental condition

关 键 词：蛋氨酸 攸县麻鸭 需要量 笼养 

分 类 号：S834[农业科学—畜牧学]