【作者】 黄健； 鲍坤； 张铁涛； 崔学哲； 李光玉； 杨福合； 张婷； 王凯英；

【Author】 Huang Jian;Bao Kun;Zhang Tietao;Cui Xuezhe;Li Guangyu;Yang Fuhe;Zhang Ting;Wang Kaiying;State Key Laboratory for Molecular Biology of Special Economic Animals,Institute of Special Wild Economic Animal and Plant Science,Chinese Academy of Agricultural Sciences;

【机构】 中国农业科学院特产研究所特种经济动物分子生物学国家重点实验室；

【摘要】 本试验旨在研究低蛋白质饲粮中添加过瘤胃蛋氨酸(RPM)和过瘤胃赖氨酸(RPL)对越冬期梅花鹿幼鹿生长性能、消化代谢和血清生化指标的影响。16只健康8月龄遗传背景相近的雄性梅花鹿,随机分为4个组,组间体重无显著差异(每个组4个重复,每个重复1只),饲喂4种不同饲粮:对照组(Ⅰ组)饲喂粗蛋白质(CP)16.52%的高蛋白质饲粮,试验组饲喂CP13.70%添加0.30%RPL并分别添加。(Ⅱ组)、0.08%(Ⅲ组)、0.16%(Ⅳ组)RPM的低蛋白质饲粮,试验期为70d。结果表明,对照组和Ⅳ组平均日增重(ADG)显著高于Ⅱ组(P<0.05),平均日采食量(ADFI)显著高于Ⅲ组(P<0.05),Ⅱ组料重比(F/G)显著高于其余各组(P<0.05);对照组磷消化率极显著低于试验组(P<0.01),且Ⅱ组显著低于Ⅲ组(P<0.05),Ⅱ组CP和粗脂肪(EE)消化率的显著低于Ⅳ组(P<0.05);对照组血清尿素氮(BUN)含量显著高于Ⅲ(P<0.01)组和Ⅳ组(P<0.05),葡萄糖(GLU)和尿酸(UA)含量极显著高于其余各组(P<0.01);其余各项指标差异不显著(P>0.05)。由此可见,饲粮CP水平从16.52%降至13.70%直接降低氮、磷排放,幼鹿生长相应延缓,添加0.16%RPM和0.30%RPL能改善幼鹿生长发育、促进物质消化、提高代谢平衡。更多还原

【Abstract】 This experiment was conducted to investigate the effects of low crude protein diet supplemented rumen- protected methionine(RPM) and rumen- protected lysine(RPL)on growth performance,nutrient digesitibility and serum biochemical indices of sika deer during the wintering season.Sixteen healthy 8- mouth- old sika deer were randomly divided into 4 groups with 4 replicates per group and 1 sika deer per replicate.Sika deers were fed 4 diets:Control group(Group Ⅰ) fed 16.52%crude protein(CP) basal diet,tests group fed 13.70%CP diet with 0.30%RPL and 0(Group Ⅱ),0.08%(Group Ⅲ),0.16%(Group Ⅳ) RPM.The results show that average daily gain(ADG) of control group and group Ⅳ were higher than group Ⅱ,and average daily feed intake(ADFI) of group Ⅲ was lower than control group and group Ⅳ,and feed to gain ratio(F/G) of group Ⅱ was higher than other groups(P < 0.05):digestibility of phosphorus(P) of control group was lower than other groups(P < 0.01) and group Ⅱ lower than group Ⅲ(P < 0.05),CP and ether extract(EE) digestibility of group Ⅱ lower than group Ⅳ:serum urea nitrogen content of control group was higher than group Ⅲ(P <0.05) and group Ⅳ(P <0.01),glucose and uric acid content of control group higher than other groups(P < 0.01):other index had no significant influence(P >0.05).It is concluded that reduced diet CP level from 16.52%to13.70%reduced nitride and phosphate emission,slowed fawn growth,however,0.16%RPM and 0.30%RPL supplementation would enhanced fawn growth,promoted nutrient digestion and metabolism balance.更多还原