摘要
本试验旨在研究妊娠中后期饲喂酵母培养物(YC)对初产母羊生产性能及血清生化、免疫和抗氧化指标的影响。选取妊娠第51天、体重为(37.72±1.91)kg的健康湖羊36只,随机分为对照组和试验组,每组6个重复,每个重复3只羊。对照组饲喂基础饲粮,试验组在基础饲粮中添加5%的YC至母羊妊娠第150天停止饲喂。饲喂试验分为预试期9 d,正试期90 d。结果显示:1)与对照组相比,饲喂YC可显著提高羔羊初生重(P<0.05),但对母羊产前体重、平均日增重和干物质采食量均没有显著影响(P>0.05)。2)与对照组相比,饲喂YC显著提高妊娠第150天母羊血清总蛋白含量(P<0.05),显著降低妊娠第150天母羊血清甘油三酯含量及妊娠第90天、第120天和第150天母羊血清β-羟基丁酸含量(P<0.05)。3)与对照组相比,饲喂YC显著提高妊娠第150天母羊血清免疫球蛋白A和免疫球蛋白G含量(P<0.05),显著降低妊娠第90天、第120天和第150天母羊血清白细胞介素-2和肿瘤坏死因子-α含量及妊娠第90天和第120天母羊血清白细胞介素-6含量(P<0.05)。4)与对照组相比,饲喂YC显著降低妊娠第150天母羊血清丙二醛含量(P<0.05),显著提高妊娠第90天、第120天和第150天母羊血清超氧化物歧化酶和谷胱甘肽过氧化物酶活性及妊娠第120天和第150天母羊血清总抗氧化能力(P<0.05)。综上所述,妊娠中后期饲喂YC可提高初产母羊的免疫功能和抗氧化能力,降低血清中炎症因子含量,减少炎症发生,进而提高初产母羊的生产性能。
This experiment aimed to investigate the effects of feeding yeast culture(YC)in mid-and late-pregnancy on production performance and serum biochemical,immune and antioxidant indexes of primiparous ewes.Thirty-six healthy Hu sheep with the body weight of(37.72±1.91)kg on the 51st day of gestation were randomly divided into 2 groups with 6 replicates per group and 3 sheep per replicate.Ewes in the control group were fed a basal diet,and those in the experimental group were fed the basal diet supplemented with 5%YC.Feeding was stopped on the 150th day of pregnancy.The feeding experiment was divided into a pre-feeding period of 9 days,a normal feeding period of 90 days.The experiment results showed as follows:1)compared with the control group,feeding YC significantly increased the birth weight of lambs(P<0.05),but had no significant effects on the prenatal body weight,average daily gain and dry matter intake of ewes(P>0.05).2)Compared with the control group,feeding YC significantly increased the total serum protein content of ewes on the 150th day of pregnancy(P<0.05);however,the serum triglyceride content of ewes in YC group at the 150th day of pregnancy and the serumβ-hydroxybutyric acid content of ewes at the 90th,120th and 150th days of pregnancy were significantly decreased(P<0.05).3)Compared with the control group,feeding YC significantly increased the serum immunoglobulin A and immunoglobulin G contents of ewes on the 150th day of pregnancy(P<0.05),and significantly decreased the contents of serum interleukin-2 and tumor necrosis factor-αof ewes on the 90th,120th and 150th day of pregnancy,as well as the contents of serum interleukin-6 of ewes on the 90th and 120th day of pregnancy(P<0.05).4)Compared with the control group,feeding YC significantly reduced the serum malondialdehyde content of ewes on the 150th day of pregnancy(P<0.05),and significantly enhanced the serum superoxide dismutase and glutathione peroxidase activities of ewes on the 90th,120th and 150th day of pregnancy(P<0.05).Additionally,it also significantly improved the serum total antioxidant capacity of ewes on the 120th and 150th day of pregnancy(P<0.05).In conclusion,feeding YC to primiparous ewes in mid-and late-pregnancy can improve the antioxidant ability and immune function,reduce the contents of inflammatory factors in serum and occurrence of inflammation in ewes,and therefore enhance the production performance of primiparous ewes.
作者
杨振祥
李林贵
刘艳丰
马文彬
李富强
杨会国
王文奇
YANG Zhenxiang;LI Lingui;LIU Yanfeng;MA Wenbin;LI Fuqiang;YANG Huiguo;WANG Wenqi(College of Animal Science,Xinjiang Agricultural University,Urumqi 830052,China;Feed Research Institute,Xinjiang Academy of Animal Science,Urumqi 830011,China;Xinjiang Key Laboratory of Herbivorous Livestock Feed Biotechnology,Urumqi 830011,China;College of Animal Science,Shihezi University,Shihezi 832003,China;Livestock Research Institute,Xinjiang Academy of Animal Science,Urumqi 830011,China)
出处
《动物营养学报》
北大核心
2025年第4期2535-2545,共11页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家重点研发计划项目(2021YFD1600701)
财政部和农业农村部国家现代农业产业技术体系(CARS-38)。
关键词
妊娠中后期
初产母羊
酵母培养物
生产性能
炎症
免疫
抗氧化
mid-and late-pregnancy
primiparous ewes
yeast culture
production performance
inflammation
immune
antioxidant
作者简介
杨振祥(1997-),男,山东菏泽人,硕士研究生,从事动物营养与饲料科学研究。E-mail:2362469334@qq.com;通信作者:刘艳丰,研究员,硕士生导师,E-mail:xjslslyf@163.com;通信作者:王文奇,研究员,硕士生导师,E-mail:xjslswwq@163.com。
