文献类型：期刊文献

英文题名：Relative bioavailability of selenium yeast for broilers fed a conventional corn-soybean meal diet

作者：Liu, Guoqing[1];Zhao, Yuzhen[1,2];Cao, Sumei[1];Wang, Runlian[2];Zhang, Liyang[1];Lu, Lin[1];Liao, Xiudong[1];Luo, Xugang[1]

机构：[1]Chinese Acad Agr Sci, Inst Anim Sci, Mineral Nutr Res Div, Beijing 100193, Peoples R China;[2]Guangdong Ocean Univ, Dept Anim Sci, Zhanjiang, Peoples R China

年份：2020

卷号：104

期号：4

起止页码：1052

外文期刊名：JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION

收录：SCI-EXPANDED(收录号：WOS:000499280000001)、、Scopus(收录号：2-s2.0-85075758743)、WOS

基金：This research was financially supported by the National Natural Science Foundation of China (project no. 31601956; Beijing, China), the Special Funds of CAAS for Distinguished Scientists (Beijing, China), the Agricultural Science and Technology Innovation Program (project no. ASTIP-IAS09; Beijing, China) and the China Agriculture Research System (project no. CARS-41; Beijing, China).

语种：英文

外文关键词：bioavailability; broiler; glutathione peroxidase expression; selenium concentration; selenium yeast

外文摘要：The present study was conducted to assess the relative bioavailability of selenium (Se) as Se yeast (SY) relative to sodium selenite (SS) for broilers fed a conventional corn-soybean meal diet. A total of 360 one-d-old Arbor Acres commercial broilers were randomly assigned to 5 treatments with 6 replicates per treatment in a completely randomized design involving a 2 (Se sources: SY and SS) x 2 (added Se levels: 0.20 and 0.40 mg Se/kg) factorial design of treatments plus 1 (a Se-unsupplemented control diet) for 42 days. The results showed that Se concentrations in plasma, liver, heart, breast muscle, pancreas and kidney of broilers on d 21 and 42, glutathione peroxidase (GSH-Px) activity in the pancreas on d 21 as well as in the breast muscle and pancreas on d 42, and GSH-Px mRNA levels in the liver, heart, breast muscle and pancreas on d 21 increased linearly (p < .03) as levels of added Se increased. Furthermore, a difference (p <= .05) between SY and SS was detected for Se concentrations in plasma, liver, heart, breast muscle, pancreas and kidney, GSH-Px activity in pancreas on both d 21 and 42, as well as pancreatic GSH-Px mRNA level on d 21. Based on slope ratios from the multiple linear regressions of the above indices, the Se bioavailabilities of SY relative to SS (100%) were 111%-394% (p <= .05) when calculated from the Se concentrations in plasma, liver, heart, breast muscle, pancreas, kidney and GSH-Px activities in pancreas on d 21 and 42, as well as GSH-Px mRNA level in pancreas on d 21. The results from this study indicated that the Se from SY was more available for enhancing the Se concentrations in plasma or tissues and the expression and activity of GSH-Px in pancreas of broilers than the Se from SS.