饲粮生物素水平对产蛋初期蛋鸭产蛋性能,蛋品质及卵巢发育指标的影响  

Effects of dietary biotin levels on laying performance,egg quality and ovarian development indices in the early laying stage of layer ducks

作　　者：王爽 张亚男 阮栋 夏伟光 陈伟 郑春田 WANG Shuang;ZHANG Ya-nan;RUAN Dong;XIA Wei-guang;CHEN Wei;ZHENG Chun-tian(Institute of Animal Science,Guangdong Academy of Agricultural Sciences,State Key Laboratory of Livestock and Poultry Breeding,Key Laboratory of Animal Nutrition and Feed Science in South China,Ministry of Agriculture and Rural Affairs,Key Laboratory of Poultry Genetics and Breeding,Ministry of Agriculture and Rural Affairs,Guangdong Key Laboratory of Animal Breeding and Nutrition,Guangdong Public Laboratory of Animal Breeding and Nutrition,Guangzhou 510640,China)

机构地区：[1]广东省农业科学院动物科学研究所,畜禽育种国家重点实验室,农业农村部华南动物营养与饲料重点实验室,广东省动物育种与营养公共实验室,广东省畜禽育种与营养研究重点实验室,广东广州510640

出　　处：《广东畜牧兽医科技》2020年第4期41-45,共5页Guangdong Journal of Animal and Veterinary Science

基　　金：国家重点研发项目(2018YFD0501504);国家水禽产业技术体系(CARS⁃42⁃13);广东省科技计划项目(2016A020210043);广州市科技计划重点项目(No.201804020091);广东省科技计划项目(2019A050505007);广东省农业科学院院长基金(201907)。

摘　　要：为了确定蛋鸭产蛋初期生物素适宜添加水平,本试验研究了饲粮生物素水平对产蛋初期蛋鸭产蛋性能,蛋品质及卵巢发育指标的影响。试验采用单因子完全随机设计,将504羽健康、刚开产的福建龙岩麻鸭随机分为6个处理,每个处理6个重复,每个重复14羽。饲粮采用小麦-豆粕饲粮,基础饲粮中可利用生物素含量为0.055 mg/kg。饲粮生物素添加水平为:0、0.05、0.1、0.15、0.2、0.25 mg/kg,试验期为21天。记录产蛋性能,采集蛋样测定蛋品质。试验结果表明:生物素添加水平对产蛋初期产蛋性能及蛋品质影响不显著(P>0.05)。但在生物素添加水平为0.15 mg/kg时,与未添加生物素组相比,产蛋率提高4.55%,日产蛋重增加1.98 g,料蛋比降低0.19。生物素添加水平为0.15 mg/kg时,蛋白高度及哈氏单位相比生物素未添加组有所下降,但未见显著差异(P>0.05)。随饲粮生物素水平升高,蛋黄中甘油三酯含量有降低趋势(P=0.11)。生物素添加水平对产蛋初期蛋鸭卵巢发育指标无显著影响(P>0.05)。生物素的添加一定程度上改善蛋鸭产蛋性能及蛋品质,并对对蛋禽脂类代谢有一定的调控作用。以生产性能为参考指标,产蛋初期蛋鸭生物素建议添加量为0.15 mg/kg。An experiment was conducted to study the effect of dietary biotin on production performance,egg quality,and ovarian development indices of laying ducks in the early laying stage.504 female ducks,in long-yan of Fujian province,with similar body weight were randomly allotted into 6 treatments with 6 replicates of 14 ducks.Ducks were fed experimental diets with six supplemental levels of biotin(0,0.05,0.1,0.15,0.2,0.25 mg/kg)by completely randomized design.After 3 weeks,record egg production performance,determine egg quality and ovarian development condition.The results showed that:the adding biotin had no effect on egg production performance and egg quality(P>0.05).Compared to the group with no biotin,the egg production rate increased by 4.55%,the daily egg weight increased by 1.98 g,and the feed/eggs decreased by 0.19.When the biotin addition level was 0.15 mg/kg,the protein height and the Harbin unit decreased compared with the biotin unadded group,but there was no significant difference(P>0.05).With the increase of dietary biotin,the triglyceride content in egg yolk had a tend to decrease(P=0.11).The biotin level had no significant effect on the ovarian development index of laying ducks during 16~19 week old(P>0.05).According to the production performance,the biotin requirement was 0.15 mg/kg for laying ducks during 16~19 week old.

关 键 词：生物素 蛋鸭 产蛋性能 蛋品质 卵巢发育 

分 类 号：S816.7[农业科学—饲料科学]