畜牧兽医学报2024，Vol.55Issue(7)：3032-3039,8.DOI:10.11843/j.issn.0366-6964.2024.07.022
不同饲粮铜水平对安哥拉兔生产性能及毛囊发育的影响
Effects of Dietary Different Copper Levels on Production Performance and Hair Follicle Development in Angora Rabbits
摘要
Abstract
This experiment was conducted to study the effects of different levels of dietary copper on production performance and hair follicle development of Angora rabbits.A total of 180 Angora rabbits(5 months old)were randomly divided into 5 groups(36 replicates per group,one replicate per group)and fed with a basal diet containing 0,5,10,20 and 40 mg·kg-1 copper,respectively.The prefeeding period was 3 days,and the experimental period was 76 days.The results showed that:1)The hair yield reached the maximum and the feed/wool ratio was relatively low when Cu was added at the level of 5 mg·kg-1(P＜0.01),but it had no significant effect on the average daily feed intake of Angora rabbits(P＞0.05).2)Compared with the control group,the addition of 40 mg·kg-1 copper significantly increased the breaking strength F,breaking strength P and breaking work W(P＜0.01),significantly affected the elongation and elongation rate(P＜0.05),and improved the quality of rabbit hair.3)Dietary copper concentration significantly increased the secondary hair follicle density(P＜0.01)and total hair follicle density(P＜0.05),and the total hair follicle density and secondary hair follicle density reached the maximum when the amount of copper was 5 mg·kg-1.Dietary copper(5 mg·kg-1)significantly increased the expression of Wntl0b and mammalian target of rapamycin(mTOR)(P＜0.01),and significantly increased the expression of keratin-related protein 6-1 gene(Kap6.1)(P＜0.05).The expression of mTOR reached the maximum at the copper addition of 40 mg·kg-1.Copper addition had no significant effect on the gene expression of epidermal growth factor(EGF),transforming growth factor-β1(TGF-β1)and transforming growth factor-β2(TGF-β2)(P＞0.05).In conclusion,dietary Cu supplementation can improve hair production performance,improve hair quality,and promote hair follicle development in Angora rabbits,which may be regulated by Wnt10b,mTOR and Kap6.1 genes.Under the conditions of this experiment,13.72 mg·kg-1 copper level in the diet of Angora rabbits is the most suitable.关键词
安哥拉兔/铜/生产性能/毛囊发育Key words
Angora rabbit/copper/performance of production/hair follicle development分类
农业科技引用本文复制引用
王小松,李冬,李淑,陈佳力,刘永需,赵红,李福昌,刘磊..不同饲粮铜水平对安哥拉兔生产性能及毛囊发育的影响[J].畜牧兽医学报,2024,55(7):3032-3039,8.基金项目
山东省重点研发计划(农业良种工程)(2021LZGC002) （农业良种工程）
山东省重点研发计划(乡村振兴科技创新提振行动计划)(2023TZXD044) （乡村振兴科技创新提振行动计划）
现代农业产业技术体系(CARS-43-B-1) （CARS-43-B-1）
山东省特种经济动物产业技术体系(SDAIT-21-16) （SDAIT-21-16）
青岛西海岸新区2021年度科技项目(科技攻关"揭榜制"专项)(2021-17) （科技攻关"揭榜制"专项）
