Shahzad Muhammad Aasif, Tauqir Nasir A, Ahmad Fayyaz, Nisa Mahr U, Sarwar Muhammad, Tipu Murtaza A
Institute of Animal Nutrition and Feed Technology, University of Agriculture, Faisalabad, Pakistan.
Trop Anim Health Prod. 2011 Mar;43(3):685-94. doi: 10.1007/s11250-010-9753-5. Epub 2010 Nov 24.
The study investigated the performance response of different dietary protein and energy levels of Nili-Ravi buffalo calves. Sixty buffalo calves of 12-15 months of age and similar body weight (140 ± 14 kg) were divided in to 12 groups, five animals in each group, according to 4 × 3 factorial arrangements. Twelve rations were formulated containing four levels of crude protein (CP; 10.5%, 12.20%, 13.80%, and 15.55%) each with three levels (1.72, 2.11, and 2.5 Mcal/Kg) of metabolizable energy (ME). Experiment lasted for 100 days; first 10 days were given for dietary adaptation. Daily feed consumption in calves fed all experimental diets were statistically significant (p<0.05) across all treatments. Higher feed intake was observed in buffalo calves fed diets containing 12.20% and 13.85% CP with 2.11 Mcal/kg ME. Results of dry matter (DM) digestion were significantly different (p<0.05) across all treatments. There was a quadratic (p<0.05) response of DM digestibility for levels of dietary protein while, curvilinear (p<0.05) trend with respect to dietary energy levels. Daily weight gain of buffalo calves did not show any treatment effect. The outcome of the present study indicate that 12-15-month-old buffalo calves perform adequately well when fed on diets containing 12.2% CP and 2.10 ME Mcal/Kg.
该研究调查了不同日粮蛋白质和能量水平对尼里-拉菲水牛犊牛生产性能的影响。将60头12 - 15月龄、体重相近（140±14千克）的水牛犊牛，按照4×3析因设计分为12组，每组5头。配制了12种日粮，包含四种粗蛋白（CP）水平（10.5%、12.20%、13.80%和15.55%），每种粗蛋白水平又各有三种代谢能（ME）水平（1.72、2.11和2.5兆卡/千克）。试验持续100天，前10天用于日粮适应期。所有试验日粮喂养的犊牛每日采食量在所有处理间均具有统计学显著差异（p<0.05）。饲喂含12.20%CP和2.11兆卡/千克ME日粮的水牛犊牛采食量较高。所有处理间干物质（DM）消化率结果差异显著（p<0.05）。日粮蛋白质水平对DM消化率呈二次曲线响应（p<0.05），而日粮能量水平呈曲线响应（p<0.05）。水牛犊牛的日增重未显示出任何处理效应。本研究结果表明，12 - 15月龄的水牛犊牛饲喂含12.2%CP和2.10兆卡/千克ME的日粮时，生产性能表现良好。
