Effects of dietary protein level on nutrients digestibility and reproductive performance of female mink(Neovison vison)during gestation

作     者：Qingkui Jiang Guangyu Li Tietao Zhang Haihua Zhang Xiuhua Gao Xiumei Xing Jiaping Zhao Fuhe Yang 

作者机构：State Key Laboratory of Special Economic Animal Molecular BiologyInstitute of Special Economic Animal and Plant Science Chinese Academy of Agricultural Sciences Feed Research Institute Chinese Academy of Agricultural Sciences 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2015年第1卷第2期

页      面：65-69页

学科分类：0710[理学-生物学] 0907[农学-林学] 090705[农学-野生动植物保护与利用] 0905[农学-畜牧学] 0906[农学-兽医学] 09[农学] 

基　　金：The financial support is from Special Fund for Public Welfare Technology Research of Agricultural Industry(200903014) Supporting Plan for Scientific and Technological Research of Jilin Province(20090238) 

主　　题：Female mink Protein level Gestation Reproductive performance 

摘      要：The objective of this study was to determine whether nutrient digestibility and reproductive performance of pregnant mink(Neovison vison) were affected by different dietary protein levels. One hundred and twenty female mink were randomly assigned to four groups, receiving diets of fresh material with different protein levels. The dietary protein levels,expressed as percentage of dry matter(DM),were 32,36, 40 and 44% respectively. These values corresponded to average 320, 360, 400 and 440 g protein/kg DM, respectively. Results were as follows. All of crude protein digestibility, nitrogen(N) intake, N retention increased along with dietary protein level increasing. Low protein level(32%) significantly reduced the above indicators(P 0.05). DM digestibility and ether extract digestibility were not affected by dietary protein level. Results of mated females, barren females, kids per litter, live born kids per mated female, birth survival rate, and birth weight showed that mink achieved optimal reproductive performance when dietary protein level was 36%. In conclusion, dietary protein was anticipated to significantly influence some nutrients utilization. Adopting the appropriate dietary protein level allow better reproduction performance. The most preferable reproductive performance was achieved when diet contained 275.5 g digestible protein per kg DM for female mink in gestation.