饲粮蛋氨酸水平对1~4周龄武禽10肉鸭生长性能及血液生化指标的影响  

Effects of Dietary Methionine Level on Growth Performance and Blood Biochemical Indexes of Wuqin 10 Ducks Aged 1~4 weeks

作　　者：余婕 敖英男 杨宇 王丽霞 叶胜强 龚萍 陈星 王定发 YU Jie;AO Yingnan;YANG Yu;WANGLixia;YE Shengqiang;GONGPing;CHEN Xing;WANG Dingfa(Institute of Animal Husbandry and Veterinary Medicine,Wuhan Academy of Agricultural Sciences,Wuhan,Hubei 430208,China;College of Animal Science and Technology,Huazhong Agricultural University,Wuhan,Hubei 430070,China)

机构地区：[1]武汉市农业科学院畜牧兽医研究所,湖北武汉430208 [2]华中农业大学动物科学技术学院,湖北武汉430070

出　　处：《家畜生态学报》2024年第10期22-28,共7页Journal of Domestic Animal Ecology

基　　金：国家现代农业产业技术体系专项(CARS-42-48);湖北省重点研发计划项目(2020BBA034);湖北省技术创新专项(2022BEC037);湖北省畜牧技术推广项目。

摘　　要：该试验旨在确定1~4周龄“武禽10”肉鸭适宜的蛋氨酸水平,为其饲粮的科学配制以及饲养标准制定提供参考。试验选用1日龄商品代武禽10肉鸭280只(公、母各半),随机分为5组,每组4个重复,每个重复14只鸭。5组试验肉鸭分别饲喂含0.28%、0.36%、0.44%、0.52%、0.60%蛋氨酸的饲粮,试验期共28 d。结果表明:(1)饲粮蛋氨酸水平显著影响1~4周龄武禽10肉鸭的试验末重、平均日增重、平均日采食量(P<0.05),其中0.36%、0.44%蛋氨酸组显著高于0.28%蛋氨酸组,但对料重比无显著影响(P>0.05)。(2)0.36%和0.52%蛋氨酸组半潜水长显著高于0.44%蛋氨酸组(P<0.05)。0.52%蛋氨酸组体斜长和胫长显著高于0.28%蛋氨酸组(P<0.05);0.36%、0.44%和0.52%蛋氨酸组的胸宽显著高于0.28%蛋氨酸组(P<0.05)。(3)各组肉鸭的器官指数无显著差异(P>0.05)。(4)0.60%蛋氨酸组血清白蛋白、球蛋白和谷丙转氨酶含量均显著高于0.44%和0.52%蛋氨酸组(P<0.05);0.28%蛋氨酸组的谷草转氨酶、尿酸和总胆固醇含量均显著高于0.44%和0.52%蛋氨酸组(P<0.05);蛋氨酸水平对于总蛋白、碱性磷酸酶和甘油三酯含量无显著影响(P>0.05)。(5)饲粮蛋氨酸水平与1~4周龄武禽10肉鸭的28日龄体重、平均日增重、平均日采食量、谷丙转氨酶、甘油三酯呈显著二次相关(P<0.05),其饲粮适宜的蛋氨酸水平分别为:0.416%、0.423%、0.414%、0.391%、0.453%。综上所述,在本试验条件下,1~4周龄武禽10肉鸭饲粮适宜蛋氨酸水平为0.42%。The purpose of this study was to determine the appropriate methionine requirement of Wuqin 10 ducks aged from 1 to 4 weeks,and to provide reference for the scientific formulation of diets and the establishment of feeding standards.A total of 280 one-day-old commercial Wuqin 10 ducks(equal numbers of males and females)were randomly divided into 5 groups,with 4 replicates per group and 14 ducks per replicate.The ducks in the five groups were fed diets containing 0.28%,0.36%,0.44%,0.52%and 0.60%methionine,respectively,for a 28-day experiment.The results showed that:(1)dietary methionine levels significantly affected the final weight,average daily weight gain and average daily feed intake of 1-4-week-old Wuqin 10 ducks(P<0.05).The 0.36%and 0.44%methionine groups exhibited significantly higher values compared to the 0.28%methionine group,while there was no significant effect on feed to gain ratio(P>0.05).(2)The semi-diving length of 0.36%and 0.52%methionine groups was significantly higher than that of the 0.44%methionine group(P<0.05).The obligue body length and tibial length of the 0.52%methionine group were significantly higher than those of the 0.28%methionine group(P<0.05).The chest width of the 0.36%,0.44%and 0.52%methionine groups were significantly higher than that of the 0.28%methionine group(P<0.05).(3)There was no significant difference in organ index among groups(P>0.05).(4)The serum albumin,globulin and alanine transaminase levels of the 0.60%methionine group were significantly higher than those of the 0.44%and 0.52%methionine groups(P<0.05).The aspartate aminotransferase,uric acid and total cholesterol levels of the 0.28%methionine group were significantly higher than those of the 0.44%and 0.52%methionine groups(P<0.05).Methionine levels had no significant effects on the total protein,alkaline phosphatase and triglyceride levels(P>0.05).(5)Dietary methionine levels showed a significant quadratic correlation(P<0.05)with 28-day body weight,average daily weight gain,average daily feed intake,alanine aminotra

关 键 词：肉鸭 蛋氨酸 生长性能 血液生化指标 营养需要量 

分 类 号：S834.5[农业科学—畜牧学]