动物营养学报2019，Vol.31Issue(8)：3643-3650,8.DOI:10.3969/j.issn.1006⁃267x.2019.08.025
矿物质缺乏对舍饲滩羊体增重和羊毛生长的影响
Effects of Mineral Deficiency on Body Weight Gain and Wool Growth of House?Feeding Tan Sheep
摘要
Abstract
This experiment was conducted to determine the effects of trace elements of copper, zinc and seleni?um deficiency on performance and pica of house?feeding Tan sheep. Sixteen healthy Tan wether sheep installed permanent rumen fistula with similar age were selected and divided into 4 groups using complete random test design. Every group contained 4 sheep, and the body weight of was no significant difference among all groups ( P＞0.05). The standard diet was compounded that the requirements of protein, vitamins, calcium, phosphor?us, selenium, copper and zinc were according to NRC ( 2008) and Inner Mongolia fine wool sheep (4 to 18 months). The control group was fed the standard diet, and the mineral deficiency groups were experimental groups, which were experimental groupⅠ( the copper level was half of the control group, but selenium, zinc and other nutrient levels were same as the control group) , experimental group Ⅱ( the zinc level was half of the control group, but selenium, copper and other nutrient levels were same as the control group) and experi?mental group Ⅲ( the selenium level was half of the control group, but copper, zinc and other nutrient levels were same as the control group) , respectively. The pre?experimental period lasted for 7 days, and the experi?mental period lasted for 60 days. The results showed as follows: 1) compared with the control group, the total feed intake, daily gain and wool density of house?feeding Tan sheep of experimental groups were significantly decreased ( P＜0.05 or P＜0.01). 2) Compared with the control group, the occurrence of pica appearance of house?feeding Tan sheep of experimental groups was observed. In conclusion, the deficiency of copper, zinc and selenium in die not only affects weight gain, but also lead to pica of house?feeding Tan sheep [ Chinese Journal of Animal Nutrition, 2019, 31(8) :3643?3650]关键词
矿物质/铜/锌/硒/异食癖/滩羊Key words
mineral/copper/zinc/selenium/pica/Tan sheep分类
农业科技引用本文复制引用
眭丹,刘宁,周玉香..矿物质缺乏对舍饲滩羊体增重和羊毛生长的影响[J].动物营养学报,2019,31(8):3643-3650,8.基金项目
国家自然科学基金项目(31160465) （31160465）
