饲料研究2025，Vol.48Issue(6)：18-22,5.DOI:10.13557/j.cnki.issn1002-2813.2025.06.004
胍基乙酸、酿酒酵母菌和纤维素酶复合物对母羊繁殖性能、养分表观消化率及瘤胃发酵参数的影响
Effects of guanidinoacetic acid,Saccharomyces cerevisiae and cellulase complex on reproductive performance,nutrient apparent digestibility,and rumen fermentation parameters in ewes
摘要
Abstract
This experiment aimed to investigate the effects of dietary supplementation with guanidinoacetic acid(GAA),Saccharomyces cerevisiae,and cellulase complex(SCC)on the reproductive performance,nutrient apparent digestibility,and rumen fermentation parameters in ewes.Seventy-two crossbred ewes(Texel × small-tailed Han)with similar age,reproductive performance,and body weight(40.0±2.5)kg were randomly divided into six groups with three replicates per group and four ewes per replicate.The control group(Con group)was fed the basal diet,which was supplemented with 0.01％SCC in SCC group,0.03％GAA in GAA 1 group,0.06％GAA in GAA 2 group,and 0.03％GAA+0.01％SCC in Mixed 1 group.Mixed 2 group added 0.06％GAA+0.01％SCC.The pre-trial period lasted 10 days,and the formal trial lasted from July 1,2023,until 3 months post-mating.Compared with the Con group,the GAA 2 group showed significantly increased conception and multiple birth rates(P＜0.05)and reduced stillbirth and single birth rates(P＜0.05).The SCC group and Mixed 1 group exhibited significantly higher multiple birth rates(P＜0.05)and lower stillbirth and single birth rates(P＜0.05).The Mixed 2 group demonstrated significantly improved conception and multiple birth rates(P＜0.05),earlier estrus onset(P＜0.05),and reduced stillbirth and single birth rates(P＜0.05).Regarding nutrient digestibility,the GAA 2 group significantly increased crude protein(CP)apparent digestibility(P＜0.05),while the SCC group,Mixed 1 group,and Mixed 2 group significantly improved CP,neutral detergent fiber(NDF),and acid detergent fiber(ADF)apparent digestibility(P＜0.05).In rumen fermentation,the GAA 2,Mixed 1,and Mixed 2 groups significantly elevated concentrations of ammonia nitrogen,microbial protein,volatile fatty acids,acetate,and propionate(P＜0.05),and the SCC group significantly increased ammoniacal nitrogen and microbial protein levels(P＜0.05).The study indicates that dietary supplementation with 0.06％GAA+0.01％SCC promoted estrus,improved conception and multiple birth rates,reduced stillbirth rate,enhanced nutrient apparent digestibility,and optimized rumen environment in ewes.关键词
胍基乙酸/酿酒酵母菌和纤维素酶复合物/繁殖性能/养分表观消化率/瘤胃发酵参数/母羊Key words
guanidinoacetic acid/Saccharomyces cerevisiae and cellulase complex/reproductive performance/nutrient apparent digestibility/rumen fermentation parameters/ewes分类
畜牧业引用本文复制引用
李秀丽..胍基乙酸、酿酒酵母菌和纤维素酶复合物对母羊繁殖性能、养分表观消化率及瘤胃发酵参数的影响[J].饲料研究,2025,48(6):18-22,5.基金项目
山东省羊产业技术体系(项目编号:SDAIT-10-05) （项目编号:SDAIT-10-05）
山东省高等学校畜禽良种繁育新技术研发中心 （）
潍坊市科技发展计划(项目编号:2022GX027) （项目编号:2022GX027）
