动物营养学报Issue(11)：3525-3530,6.DOI:10.3969/j.issn.1006-267x.2014.11.044
饲粮铜水平对冬毛期银狐铜表观生物学利用率及组织器官铜沉积量的影响
Effects of Dietary Copper Level on Copper Apparent Biological Utilization and Copper Deposition in Tissue and Organ of Silver Foxes during the Winter Hair Period
摘要
Abstract
This experment was conducted to study the effects of dietary copper level on copper apparent biolog-ical utilization and copper deposition in tissue and organ of silver foxes during the winter hair period. Fifty 120-day-old female silver foxes with an average body weight of ( 5 134 ± 540 ) g were selected and randomly as-signed into 5 groups with 10 replicates in each group and 1 silver fox in each replicate. Foxes in the 6 groups were fed the basal diets supplemented 6 ( group Ⅰ) , 30 ( group Ⅱ) , 60 ( group Ⅲ) , 90 ( group Ⅳ) and 150 mg/kg ( groupⅤ) citric acid copper, respectively. The copper content in basal diet was 4.92 mg/kg. The pre-trial period lasted for 7 days and the trial period lasted for 51 days. The results showed as follows:1) diet-ary copper level did not significantly affect average daily feed intake, fecal output and copper apparent biologi-cal utilization ( P>0.05) , but significantly affected the copper intake and fecal copper output ( P<0.01) . The copper intake and fecal copper output were significantly increased with dietary copper level increasing ( P<0.01) . 2) Dietary copper level significantly affected the copper deposition in hair, liver, kidney and heart ( P<0.01) . The hair copper deposition were increased with dietary copper level increasing, and that of group Ⅴwas the highest. There was no regular change on copper deposition in liver, kidney and heart. 3) Dietary cop-per level significantly affected the heart weight ( P<0.05) , from groupⅡto groupⅤ, heart weight had a de-clined trend. Dietary copper level did not significantly affect liver weight, kidney weight and spleen weight ( P>0.05) . It is concluded that adding 60 mg/kg citric acid copper ( actual dietary copper content appropriately 65 mg/kg) in the basal diet is beneficial for digestion and utilization of copper of silver foxesx during the win-ter hair period.关键词
铜/银狐/铜表观生物学利用率/组织铜/沉积量Key words
copper/silver foxex/copper apparent biological utilization/tissue copper/deposition分类
农业科技引用本文复制引用
钟伟,鲍坤,张婷,刘凤华,杨雅涵,张海华,李光玉..饲粮铜水平对冬毛期银狐铜表观生物学利用率及组织器官铜沉积量的影响[J].动物营养学报,2014,(11):3525-3530,6.基金项目
吉林省特种经济动物营养与生理科技创新团队（20121810）；中国农业科学院特产研究所创新工程项目；吉林省特种经济动物分子生物学省部共建实验室项目 （）
