动物营养学报2019，Vol.31Issue(10)：4622-4629,8.DOI:10.3969／j.issn.1006⁃267x.2019.10.026
饲粮中铜添加水平对2～4月龄长毛兔生长性能、产毛性能、血清生化指标与含铜酶活性及内脏器官发育的影响
Effects of Dietary Copper Supplementation Level on Growth Performance, Wool Performance, Serum Biochemical Indices and Copper?Containing Enzyme Activities and Visceral Organ Development of 2?to 4?Month?Old Long Hairy Rabbits
摘要
Abstract
This experiment was conducted to study the effects of dietary copper supplemental level on growth performance, wool performance, serum biochemical indices and copper?containing enzyme activities and vis?ceral organ development of 2?to 4?month?old long hairy rabbits. After cutting lanugo, one hundred and eighty long hairy rabbits were randomly assigned to 6 groups with 30 rabbits in each group, the rabbits were feed sep?arately. Rabbits in the 6 groups were fed experimental diets which supplemented with 0 ( control) , 10, 20, 40, 80 and 160 mg／kg copper ( the form was CuSO4·5H2O) based on a basal diet, and the measured values of copper content in the 6 experimental diets were 3.25, 13.13, 23.40, 44.56, 83.58 and 163.87 mg／kg, re?spectively. The trail lasted for 7 days for adaption, and 53 days for test. The results showed as follows: dietary copper supplemental level had significant effects on average daily gain ( ADG) and feed／gain ( F／G) ( P＜0.05) , the highest ADG was obtained when the copper supplemental level was 80 mg／kg, and the lowest F／G was obtained when the copper supplemental level was 40 mg／kg. Dietary copper supplemental level had signifi?cant effects on lanugo production, fur area and wool diameter of rabbits ( P＜0.05) , the lanugo production was the highest and the fur area was the biggest when the copper supplemental level was 40 mg／kg. Dietary copper supplemental level had significant influence on serum urea nitrogen ( UN) content( P＜0.05) , when the copper supplemental level was 40 mg／kg, the serum UN content was the lowest and it was 7.24 mmol／L, but dietary copper supplemental level had no influences on serum total protein ( TP) , albumin ( ALB) , globulin ( GLB) and ALB／GLB ( A／G) ( P＞0.05). Dietary copper supplemental level had significant influence on the activities of serum copper?zinc superoxide dismutase ( CuZn?SOD) and ceruloplasmin ( CP) ( P＜0.05 ). The serum CuZn?SOD activity of 40 and 80 mg／kg groups was significantly higher than that of other groups ( P＜0.05). The serum CP activity of 40 and 80 mg／kg groups was significantly higher than that of control group and 10, 20 mg／kg groups ( P＜0.05). Dietary copper supplemental level had no significant influence on organ develop?ment indices ( P＞0.05). Considering all results of this experiment, the appropriate copper supplemental levels are 40 to 80 mg／kg ( the measured values of copper content in diets are 44.56 to 83.58 mg／kg) for 2? to 4?month?old long hairy rabbits.[ Chinese Journal of Animal Nutrition, 2019, 31(10) :4622?4629]关键词
铜/长毛兔/生长性能/产毛性能/血清生化指标/血清含铜酶活性Key words
copper/long hair rabbits/growth performance/wool performance/serum biochemical indices/copper⁃containing enzyme activities分类
农业科技引用本文复制引用
张永翠,王恩玲,李燕舞,王元新,程光民,刘建胜,姜八一..饲粮中铜添加水平对2～4月龄长毛兔生长性能、产毛性能、血清生化指标与含铜酶活性及内脏器官发育的影响[J].动物营养学报,2019,31(10):4622-4629,8.基金项目
山东省现代农业产业技术体系特种经济动物创新团队( SDAIT⁃21⁃03) （ SDAIT⁃21⁃03）
