色氨酸水平对12～17周龄金定蛋鸭抗氧化性能影响的研究  

The effects of tryptophan level on antioxidant parameters of 12 ～ 17 weeks Jinding ducks

作　　者：张括[1] 王磊[2] 邹鹏[1] 董蕾 ZHANG Kuo;WANG Lei;ZOU Peng;DONG Lei(Heilongjiang Vocational College Nationalities,Harbin,Heilongjiang Province 150060,China;Harbin Normal University,Harbin,Heilongjiang Province 150025,China;Harbin NO 17 Middle School,Harbin,Heilongjiang Province 150000,China)

机构地区：[1]黑龙江民族职业学院,黑龙江哈尔滨150060 [2]哈尔滨师范大学,黑龙江哈尔滨150025 [3]哈尔滨市第十七中学校,黑龙江哈尔滨150000

出　　处：《中国饲料》2019年第11期52-55,共4页China Feed

基　　金：黑龙江省青年专项课题“工匠培育视角下畜牧兽医专业动物营养与饲料教学标准研究”(GZD1317038)

摘　　要：试验旨在通过研究不同水平色氨酸对12~17周龄金定蛋鸭抗氧化指标的影响,最终确定最佳的色氨酸水平。试验采用单因素完全随机分组法,将12周龄健康的金定蛋鸭300只随机分成5组,每组设6个重复,每个重复10只。Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ组饲喂的色氨酸水平依次为0.199%、0.220%、0.240%、0.260%、0.300%。采用二次曲线方程确定12~17周龄金定蛋鸭色氨酸的最佳水平。结果表明:0.250%~0.267%水平的色氨酸能显著提高试鸭血清和肝脏过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-PX)和总抗氧化能力(T-AOC)(P<0.05),显著提高试鸭肝脏超氧化物歧化酶(SOD)活性(P<0.05),但是对试鸭血清SOD活性影响不显著(P>0.05),显著降低试鸭血清和肝脏丙二醛(MDA)浓度(P<0.05)。综上,0.250%~0.267%水平的色氨酸对12~17周龄金定蛋鸭抗氧化功能具有最好的调节作用。In this experiment,to study the different levels of tryptophan in diets on antioxidant parameters of the 12~17 weeks Jinding ducks,300 healthy ducks with 12 weeks old were randomly divided into five treatment groups by using sigle factor experiment design,each dealing with 6 replicates of 10 ducks.GroupsⅠ,Ⅱ,Ⅲ,Ⅳ,Ⅴwere fed 0.199%,0.220%,0.240%,0.260%,0.300%tryptophan diet.The results showed that supplementation of 0.250%~0.267%tryptophan significantly improved catalase(CAT),total antioxidant capacity(T-AOC)and glutathione peroxidase(GSH-PX)activity in serem and liver(P<0.05).The liver superoxide dismutases(SOD)was significantly improved in the 0.250%~0.267%tryptophan lever,but the effect on serum SOD was not significant,and significantly reduced malondialdehyde(MDA)(P<0.05).In conclusion,make antioxidant parameters evaluation,the appropriate amount of tryptophan was 0.250%~0.267%.

关 键 词：12~17周龄金定蛋鸭 色氨酸 抗氧化功能 

分 类 号：S816.7[农业科学—饲料科学]