摘要
本试验旨在研究饲粮添加茶多酚(TP)对长顺绿壳蛋鸡生产性能、蛋品质、血浆抗氧化指标及输卵管形态的影响。选用180日龄健康的长顺绿壳蛋鸡240只,随机分为3个组,每组10个重复,每个重复8只鸡。对照组饲喂基础饲粮,试验组分别在基础饲粮的基础上额外添加200和400 mg/kg的TP。预试期1周,正试期8周。结果表明:1)与对照组相比,饲粮添加200和400 mg/kg的TP均显著降低了1~4周蛋鸡的平均日采食量和平均蛋重(P<0.05),饲粮添加400 mg/kg的TP显著降低了5~8周蛋鸡的平均日采食量(P<0.05)。2)与对照组相比,饲粮添加400 mg/kg的TP显著提高了第4和8周鸡蛋的哈夫单位和蛋黄颜色(P<0.05),饲粮添加200 mg/kg的TP显著增加了第4和8周鸡蛋的哈夫单位(P<0.05)。3)与对照组相比,饲粮添加400 mg/kg的TP显著降低了血浆丙二醛含量(P<0.05);饲粮添加200和400 mg/kg的TP显著提高了血浆超氧化物歧化酶和谷胱甘肽过氧化物酶活性(P<0.05),显著增加了血浆总抗氧化能力(P<0.05)。4)与对照组相比,饲粮添加400 mg/kg的TP改善了输卵管膨大部形态,显著增加了输卵管膨大部绒毛高度和绒毛宽度(P<0.05)。综上所述,饲粮添加400 mg/kg的TP降低了蛋鸡的平均蛋重和平均日采食量,提高了其抗氧化性能,对蛋品质及输卵管膨大部形态有一定的改善作用。
The purpose of this study was to investigate the effects of dietary tea polyphenols(TP)performance,egg quality,plasma antioxidant parameters and oviduct morphology of Changshun green-shell laying hens.A total of 240 health laying hens at 180 days of age were randomly assigned into 3 groups with 10 replicate per group and 8 laying hens per replicate.Hens in the control group was fed a basal diet,and others in experimental groups were fed the basal diet supplemented 200 and 400 mg/kg TP,respectively.The pre-experimental period lasted for 1 week,and the experimental period lasted for 8 weeks.The results showed as follows:1)compared with the control group,dietary 200 and 400 mg/kg TP significantly decreased the average daily feed intake and average egg weight of laying hens during 1 to 4 weeks(P<0.05),and dietary 400 mg/kg TP significantly decreased the average daily feed intake of laying hens during 5 to 8 weeks(P<0.05).2)Compared with the control group,dietary 400 mg/kg TP significantly increased the Haugh unit and yolk color of laying hens at weeks 4 and 8(P<0.05),and dietary 200 mg/kg TP significantly increased the Haugh unit of laying hens at weeks 4 and 8(P<0.05).3)Compared with the control group,dietary 400 mg/kg TP significantly decreased the plasma malondialdehyde content(P<0.05);dietary 200 and 400 mg/kg TP significantly increased the plasma superoxide dismutase and glutathione peroxidase activities(P<0.05),and significantly increased the plasma total antioxidant capacity(P<0.05).4)Compared with the control group,dietary 400 mg/kg TP improved the oviduct magnum morphology,and significantly increased the villus height and villus width in oviduct magnum(P<0.05).In conclusion,dietary 400 mg/kg TP decrease the average egg weight and average dietary feed intake,increase the antioxidant capacity,and partly improve the egg quality and magnum morphology of laying hens.
作者
刘宁
张柏林
张丽娟
朱敏
郝美林
宋培勇
姚欣
许润芳
LIU Ning;ZHANG Bolin;ZHANG Lijuan;ZHU Min;HAO Meilin;SONG Peiyong;YAO Xin;XU Runfang(Key Laboratory of Conservation and Utilization of Characteristic Animal Resources in Chishui River Basin,Department of Biology and Agriculture of Zunyi Normal College,Zunyi 523006,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2021年第11期6137-6146,共10页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
遵义市校联合基金(遵市科合HZ字277号)
遵义市“15851”人才项目(2050020213#)
贵州省科技厅项目(黔科合基础2017[1205])
贵州省服务农村产业革命项目(遵师合农村产业字201905)。
关键词
茶多酚
长顺绿壳蛋鸡
生产性能
抗氧化
蛋品质
膨大部形态
tea polyphenols
Changshun green-shell laying hens
performance
antioxidant
egg quality
magnum morphology
