摘要
本试验旨在研究地顶孢霉培养物(ATC)对蛋鸡生产性能、蛋品质、抗氧化能力、免疫功能和肠道形态的影响。选取健康且体重相近的70周龄伊莎褐蛋鸡960只,随机分为5个组,每组6个重复,每个重复32只。对照组饲喂基础饲粮,试验组饲喂在基础饲粮中分别添加0.05%、0.10%、0.15%和0.20%ATC的饲粮。预试期1周,正试期9周。结果表明:1)与对照组相比,饲粮添加0.10%、0.15%和0.20%的ATC显著提高了平均日产蛋重(P<0.05),饲粮添加0.15%和0.20%的ATC显著降低了料蛋比(P<0.05)。2)与对照组相比,饲粮添加不同水平的ATC均显著提高了平均蛋重(P<0.05),饲粮添加0.05%的ATC显著提高了蛋白高度和哈氏单位(P<0.05)。3)与对照组相比,饲粮添加0.05%、0.10%和0.20%的ATC显著降低了血清尿素氮(UN)含量(P<0.05)。4)与对照组相比,饲粮添加0.15%的ATC显著提高了血清谷胱甘肽过氧化物酶(GSH-Px)活性(P<0.05),饲粮添加0.05%、0.10%和0.20%的ATC显著降低了血清丙二醛(MDA)含量(P<0.05);各ATC添加组血清过氧化氢酶(CAT)活性均显著提高(P<0.05)。5)与对照组相比,饲粮添加0.20%的ATC显著提高了血清免疫球蛋白G(IgG)含量(P<0.05),饲粮添加0.15%和0.20%的ATC显著提高了血清免疫球蛋白M(IgM)含量(P<0.05)。6)与对照组相比,在空肠中,饲粮添加0.20%的ATC显著提高了绒毛高度(P<0.05);各ATC添加组隐窝深度均显著降低(P<0.05),绒隐比(绒毛高度/隐窝深度)均显著提高(P<0.05)。与对照组相比,在回肠中,各ATC添加组绒毛高度和绒隐比均显著提高(P<0.05),隐窝深度均显著降低(P<0.05)。综上所述,饲粮添加ATC可增强蛋鸡的免疫功能和抗氧化能力,改善空肠和回肠形态结构,进而改善蛋品质,降低料蛋比,且以添加0.20%的ATC效果较佳。
This experiment was conducted to investigate the effects of Acremonium terricola culture(ATC)on performance,egg quality,antioxidant capacity,immune function and intestinal morphology of laying hens.A total of 960 healthy 70-week-old Isa brown layers with similar body weight were randomly assigned into 5 groups with 6 replicates in each group and 32 hens in each replicate.Hens in the control group were fed a basal diet,and those in the experimental groups were fed the basal diet supplemented with 0.05%,0.10%,0.15%and 0.20%ATC,respectively.The trial pre-period was 1 week,and the formal period was 9 weeks.The results showed as follows:1)compared with the control group,dietary 0.10%,0.15%and 0.20%ATC significantly increased the average daily egg weight(P<0.05),and dietary 0.15%and 0.20%ATC significantly decreased the feed to egg ratio(P<0.05).2)Compared with the control group,different dietary levels of ATC significantly increased the average egg weight(P<0.05),and dietary 0.05%ATC significantly increased the protein height and Haugh unit(P<0.05).3)Compared with the control group,dietary 0.05%,0.10%and 0.20%ATC significantly decreased the serum urea nitrogen(UN)content(P<0.05).4)Compared with the control group,dietary 0.15%ATC significantly increased the serum glutathione peroxidase(GSH-Px)activity(P<0.05),dietary 0.05%,0.10%and 0.20%significantly decreased the serum malondialdehyde(MDA)content(P<0.05),and the serum catalase(CAT)activity in all ATC supplement groups was significantly increased(P<0.05).5)Compared with the control group,dietary 0.20%ATC significantly increased the serum immunoglobulin G(IgG)content(P<0.05),and dietary 0.15%and 0.20%ATC significantly increased the serum immunoglobulin M(IgM)content(P<0.05).6)Compared with the control group,in the jejunum,dietary 0.20%ATC significantly increased the villus height(P<0.05);the crypt depth in all ATC supplemental groups was significantly decreased(P<0.05),and the ratio of villus height to crypt depth was significantly increased(P<0.05).Compared with the control group,in the ileum,the villus height and the ratio of villus height to crypt depth in all ATC supplemental groups were significantly increased(P<0.05),and the crypt depth was significantly decreased(P<0.05).In conclusion,dietary ATC can enhance the immune function and antioxidant capacity,improve the morphology and structure of jejunum and ileum,improve the egg quality and reduce the ratio of feed to egg of laying hens,and 0.20%ATC supplementation has the best effect.
作者
刘雅婷
陈贵才
张丽佳
简华锋
李燕
牟天铭
董信阳
邹晓庭
LIU Yating;CHEN Guicai;ZHANG Lijia;JIAN Huafeng;LI Yan;MOU Tianming;DONG Xinyang;ZOU Xiaoting(Key Laboratory of Animal Feed and Nutrition of Zhejiang Province,College of Animal Science,Zhejiang University,Hangzhou 310058,China;Zhejiang Esigma Biothchnology Co.,Ltd.,Haining 314422,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2023年第4期2286-2295,共10页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
浙江省“尖兵”“领雁”研发攻关计划项目(2022C02073)
海宁市协同创新示范项目(20210107)。
关键词
地顶孢霉培养物
蛋鸡
生产性能
抗氧化能力
免疫功能
肠道形态
Acremonium terricola culture
laying hens
performance
antioxidant capacity
immune function
intestinal morphology
