羟基蛋氨酸锌对产蛋后期肉种母鸡生产性能、养分利用率和抗氧化性能的影响  

Effects of Methionine Hydroxyl Analog Chelated Zinc on Performance,Nutrient Utilization and Antioxidant Performance of Broiler Breeders during Later Laying Period

作　　者：荆佳林 龚建刚[2] 郝艳霜[1] 冯志华[1] 赵国先[1] 刘焕良 闫伟 JING Jialin;GONG Jiangang;HAO Yanshuang;FENG Zhihua;ZHAO Guoxian;LIU Huanliang;YAN Wei(College of Animal Science and Technology,Hebei Agricultural University,Baoding 071000,China;College of Food Science and Echnology,Hebei Agricultural University,Baoding 071000,China;Hebei Jiuxing Agriculture and Animal Husbandry Development Co.,Ltd.,Baoding 071000,China;Novus International Trading(Shanghai)Co.,Ltd.,Shanghai 200000,China)

机构地区：[1]河北农业大学动物科技学院,保定071000 [2]河北农业大学食品科技学院,保定071000 [3]河北玖兴农牧发展有限公司,保定071000 [4]诺伟司国际贸易(上海)有限公司,上海200000

出　　处：《动物营养学报》2021年第3期1430-1439,共10页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：河北省现代农业产业技术体系蛋肉鸡创新团队建设项目(HBCT2018150203)。

摘　　要：本试验旨在研究饲粮添加不同水平羟基蛋氨酸锌(MHA-Zn)对产蛋后期肉种母鸡生产性能、养分利用率和抗氧化性能的影响。选取56周龄哈伯德肉种母鸡600只,随机分为5组,每组6个重复,每个重复20只。预试期2周,各组均饲喂不补充锌的基础饲粮。正试期10周,对照组在基础饲粮(锌含量27.81 mg/kg)中添加100 mg/kg硫酸锌(以锌元素计),试验组分别在基础饲粮中添加25、50、75和100 mg/kg MHA-Zn(以锌元素计)。结果表明:1)与对照组相比,75和100 mg/kg MHA-Zn添加组肉种母鸡产蛋率显著提高(P<0.05);50、75和100 mg/kg MHA-Zn添加组平均蛋重显著提高(P<0.05),料蛋比显著降低(P<0.05);饲粮添加不同水平MHA-Zn替代硫酸锌有降低产蛋后期肉种母鸡破蛋率的趋势(0.05≤P<0.10)。2)与对照组相比,饲粮添加不同水平MHA-Zn对产蛋后期肉种母鸡钙表观利用率有不同程度升高,其中100 mg/kg MHA-Zn添加组钙利用率显著提高(P<0.05);试验组锌表观利用率和血清锌含量有升高趋势(0.05≤P<0.10)。3)与对照组相比,饲粮添加50、75和100 mg/kg MHA-Zn显著降低产蛋后期肉种母鸡血清丙二醛含量(P<0.05),饲粮添加75和100 mg/kg MHA-Zn显著提高肝脏超氧化物歧化酶活性和总抗氧化能力(P<0.05)。4)与对照组相比,饲粮中MHA-Zn的添加水平为75 mg/kg时经济效益最佳。由此可见,饲粮添加适宜水平MHA-Zn替代硫酸锌能够改善产蛋后期肉种母鸡生产性能和养分利用率,并且提高血清和肝脏抗氧化能力;本试验条件下,最佳的MHA-Zn添加水平为75 mg/kg。This experiment was conducted to evaluate the effects of different supplemental levels of methionine hydroxyl analog chelated zinc(MHA-Zn)on performance,nutrient utilization and antioxidant performance of broiler breeders during later laying period.A total of 600 Hubbard(56-week-old)broiler breeders were randomly assigned into 5 groups with 6 replicates per group and 20 birds per replicate.Broiler breeders in the control group were fed a basal diet(zinc content was 27.81 mg/kg)supplemented with 100 mg/kg zinc sulfate(as zinc),and those in the experimental groups were fed the basal diet supplemented with 25,50,75 and 100 mg/kg MHA-Zn(as zinc),respectively.The broiler breeders were fed the treatment diets for 10 weeks after a 2-week adaptation period(fed the basal diet without additional zinc).The results showed as follows:1)compared with the control group,dietary 75 and 100 mg/kg MHA-Zn significantly increased the laying rate of broiler breeders(P<0.05);dietary 50,75 and 100 mg/kg MHA-Zn significantly increased the average egg weight(P<0.05),and significantly decreased the feed to egg ratio(P<0.05);different levels of dietary MHA-Zn had a decreasing tendency in broken egg rate of broiler breeders during later laying period(0.05≤P<0.10).2)Compared with the control group,different levels of dietary MHA-Zn increased the calcium apparent utilization of broiler breeders during later laying period in some different degrees,and dietary 100 mg/kg MHA-Zn significantly increased the calcium apparent utilization(P<0.05);dietary MHA-Zn had an increasing tendency in the zinc apparent utilization and serum zinc content(0.05≤P<0.10).3)Compared with the control group,dietary 50,75 and 100 mg/kg MHA-Zn significantly decreased the serum malonaldehyde content of broiler breeders during later laying period(P<0.05),and dietary 75 and 100 mg/kg MHA-Zn significantly increased the liver superoxide dismutase activity and the total antioxidant capacity(P<0.05).4)Compared with the control group,dietary 75 mg/kg MHA-Zn had the best econo

关 键 词：肉种鸡 产蛋后期 羟基蛋氨酸锌 生产性能 养分利用率 抗氧化性能 

分 类 号：S816.7[农业科学—饲料科学]