文献类型：期刊文献

英文题名：Effect of intravenously injected zinc on tissue zinc and metallothionein gene expression of broilers

作者：Shen, S. F.[1];Wang, R. L.[2];Lu, L.[1];Li, S. F.[3];Liu, S. B.[1];Xie, J. J.[1];Zhang, L. Y.[1];Wang, M. L.[1];Luo, X. G.[1]

机构：[1]Chinese Acad Agr Sci, Mineral Nutr Res Div, Inst Anim Sci, Beijing 100193, Peoples R China;[2]Guangdong Ocean Univ, Dept Anim Sci, Zhanjiang 524088, Peoples R China;[3]Hebei Normal Univ Sci & Technol, Dept Anim Sci, Qinhuangdao 066000, Peoples R China

年份：2013

卷号：54

期号：3

起止页码：381

外文期刊名：BRITISH POULTRY SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000320864100014)、、Scopus(收录号：2-s2.0-84879693253)、WOS

基金：This study was supported by the Program of the National Natural Science Foundation of China (project no. 30871798; Beijing, People's Republic of China), the Open Research Program of State Key Laboratory of Animal Nutrition (project no. 2004DA125184F1101; Beijing, People's Republic of China) and China Agriculture Research System (project no. CARS-42; Beijing, People's Republic of China).

语种：英文

外文摘要：1. The effect of intravenously injected zinc (Zn) on tissue Zn concentrations and pancreas metallothionein (MT) gene expression in broilers was investigated to detect differences in the tissue utilisation of Zn from different Zn sources. 2. A total of 432 male chickens were randomly allotted on d 22 post-hatch to one of nine treatments in a completely randomised design. Chickens were injected with either a 0.9% (w/v) NaCl solution (control) or a saline solution supplemented with Zn sulphate or one of three organic Zn chelates with weak (Zn-AAW), moderate (Zn-ProM) or strong (Zn-Pro S) chelation strengths at two injected Zn dosages calculated according to two Zn absorbability levels (6 and 12%). 3. Bone and pancreas Zn concentrations, pancreas MT mRNA levels and MT concentrations increased on d 6 and 12 after Zn injections as the injected Zn dosages increased. Chickens injected with the Zn-Pro S had lower bone Zn concentration than those injected with the Zn-Pro M or Zn-AA W on d 6 after injections. However, no differences among Zn sources were observed in bone Zn concentration on d 12 after injections, pancreas Zn concentrations, pancreas MT mRNA levels and MT concentrations on both d 6 and d 12 after injections. 4. It was concluded that the injected Zn-Pro S was the least favourable for bone Zn utilisation of broilers. The pancreas Zn concentration and pancreas MT gene expressions might not be sensitive enough to detect differences in the tissue utilisation of injected Zn in broilers between organic and inorganic Zn sources or among organic Zn sources.