机构地区:[1]华南农业大学兽医学院,广州510642 [2]贵州省胡智超农业发展有限公司,黔南550701 [3]郁南县金鸡蛋养殖有限公司,云浮527100 [4]茂名伊心农业有限公司,茂名525400
出 处:《动物营养学报》2024年第1期255-266,共12页CHINESE JOURNAL OF ANIMAL NUTRITION
基 金:广州市科技项目2022年重点研发计划(202206010189)。
摘 要:本研究旨在研究黑水虻对强制换羽后蛋鸡产蛋性能、生殖器官发育、血清生殖激素指标及抗氧化能力的影响。选择600只980日龄的强制换羽40 d后的京红蛋鸡,随机分为4组,每组5个重复,每个重复30只。对照组(C组)饲喂不添加黑水虻的基础饲粮,黑水虻低剂量组(L组)、黑水虻中剂量组(M组)、黑水虻高剂量组(H组)在基础饲粮基础上分别补饲50、100和150 g/kg黑水虻幼虫虫体。试验期42 d。结果表明:1)与C组相比,L、M、H组的第1~7天、第8~14天、第15~21天产蛋率显著升高(P<0.05),M组的第36~42天产蛋率显著升高(P<0.05);L、M、H组的第1~7天、第8~14天、第15~21天、第29~35天和第36~42天料蛋比显著降低(P<0.05),M组的第22~28天料蛋比显著降低(P<0.05)。2)与C组相比,M组的第21天排卵前卵泡数量显著升高(P<0.05),L组的第21天和第42天小黄卵泡数量显著升高(P<0.05),H组的第21天输卵管长度显著升高(P<0.05)。3)与C组相比,L、M、H组的第21天血清促黄体激素(LH)含量显著升高(P<0.05),L组的第21天血清促卵泡素(FSH)含量显著升高(P<0.05),M、H组的第42天血清催乳素(PRL)含量显著降低(P<0.05)。4)与C组相比,L、M组的第21天卵巢谷胱甘肽过氧化物酶(GSH-Px)活性显著升高(P<0.05),M、H组的第21天卵巢总抗氧化能力(T-AOC)显著升高(P<0.05),M、H组的第21天卵巢过氧化氢酶(CAT)活性显著升高(P<0.05)。5)与C组相比,L组的第21天输卵管GSH-Px活性显著升高(P<0.05),L组的第21天输卵管T-AOC显著升高(P<0.05)。由此可见,强制换羽后蛋鸡补饲黑水虻可提高蛋鸡血清生殖激素含量和生殖器官抗氧化能力,并提高强制换羽后蛋鸡的产蛋性能,其中补饲100 g/kg黑水虻的效果最好。The purpose of this study was to investigate the effects of black soldier fly on laying performance,reproductive organ development,serum reproductive hormone indexes and antioxidant capacity of laying hens after forced molting.A total of 600 Jinghong laying hens at 980 days of age after forced molting for 40 days were randomly divided into 4 groups with 5 replicates per group and 30 hens per replicate.The control group(group C)was fed a basal diet without black soldier fly,and the black soldier fly low-dose group(group L),black soldier fly medium-dose group(group M)and black soldier fly high-dose group(group H)were supplemented with 50,100 and 150 g/kg black soldier fly larvae based on the basal diet,respectively.The experiment lasted for 42 days.The results showed as follows:1)compared with group C,the laying rate on days 1 to 7,8 to 14 and 15 to 21 of groups L,M and H was significantly increased(P<0.05),and the laying rate on days 36 to 42 of group M was significantly increased(P<0.05);the feed to egg ratio on days 1 to 7,8 to 14,15 to 21,29 to 35 and 36 to 42 of groups L,M and H was significantly decreased(P<0.05),and the feed to egg ratio on days 22 to 28 of group M was significantly decreased(P<0.05).2)Compared with group C,the follicle number before ovulation on day 21 of group M was significantly increased(P<0.05),the small yellow follicle number on day 21 and day 42 of group L was significantly increased(P<0.05),and the oviduct length on day 21 of group H was significantly increased(P<0.05).3)Compared with group C,the serum luteinizing hormone(LH)content on day 21 of groups L,M and H was significantly increased(P<0.05),the serum follicle stimulating hormone(FSH)content on day 21 of group L was significantly increased(P<0.05),and the serum prolactin(PRL)content on day 42 of groups M and H was significantly decreased(P<0.05).4)Compared with group C,the ovarian glutathione peroxidase(GSH-Px)activity on day 21 of groups L and M was significantly increased(P<0.05),the ovarian total antioxidant capacity(T-AOC)o
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