您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effects of dietary barley inclusion and glucanase supplementation on the production performance, egg quality and digestive functions in laying ducks

文献类型： 外文期刊

作者： Chen, Wei 1 ; Wang, Shuang 1 ; Xu, Runsheng 2 ; Xia, Weiguang 1 ; Ruan, Dong 1 ; Zhang, Yanan 1 ; Mohammed, Khaled A. 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Guangdong Publ Lab Anim Breeding & Nutr,State Key, Key Lab Anim Nutr & Feed Sci South China,Minist A, Inst Anim Sci,Guangdong Key Lab Anim Breeding & N, Guangzhou 510640, Guangdong, Peoples R China

2.Foshan Univ, Coll Life Sci & Engn, Foshan 528225, Peoples R China

3.Assiut Univ, Fac Agr, Dept Poultry Prod, Assiut 71526, Egypt

4.Mansoura Univ, Fac Agr, Poultry Prod Dept, Mansoura 35516, Egypt

5.King Saud Univ, Coll Food & Agr Sci, Anim Prod Dept, Riyadh 11451, Saudi Arabia

6.Cairo Univ, Fac Agr, Dept Anim Prod, Giza 12613, Egypt

关键词： Barley; Laying duck; Glucanase; Digestive function

期刊名称：ANIMAL NUTRITION （ 影响因子：4.492； ）

ISSN： 2405-6383

年卷期： 2021 年 7 卷 1 期

页码：

收录情况： SCI

摘要： This study evaluated the effects of barley inclusion and glucanase supplementation on the productive performance and digestive function in laying ducks. The experiment used a randomized design with a 5 x 2 factorial arrangement of 5 graded levels of barley (0%, 15%, 30%, 45% and 60%) with or without 1.5 g/kg beta-1,3-1,4-glucanase (15,000 U/kg). During the experimental period of 120 d, the weight and total number of eggs within each pen were recorded daily, and egg quality was determined every 4 wk. At the end of the experiment, 3 randomly selected ducks within each replicate were sacrificed, then duodenal digesta and jejunal mucosa was collected. Dietary inclusion of barley had no effects on egg production, daily egg mass or FCR, but supplementation with glucanase improved egg production and FCR (P < 0.01). Barley did not affect feed intake of laying ducks, but glucanase tended to increase feed intake (P = 0.09). Neither barley nor beta-glucanase had effects on the egg quality variables, except for yolk color score, which was decreased with increasing barley supplementation. Glucanase, but not barley, increased the activity of chymotrypsin and amylase in duodenal digesta. Barley inclusion affected the activity of alkaline phosphatase and maltase in jejunal mucosa (P < 0.05), but beta-glucanase had no effects on the activity of these brush border enzymes. Barley inclusion increased the glucan content in duodenal digesta, but supplementation of glucanase to barley-based diet reduced digesta glucan content and reduced total volatile fatty acids and increased the proportion of acetic acid in cecal contents. The results indicate that, without glucanase, the optimal dietary barley level in the diets of laying ducks is about 13% for maximal production performance; glucanase supplementation of the barley diets improved production performance, probably through enhancing digestive function. (C) 2021, Chinese Association of Animal Science and Veterinary Medicine. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台