Effects of supplemental propionate calcium on growth and blood indexes of the high concentrate finishing beef cattle | 添加丙酸钙对高精料育肥肉牛生长性能和血液指标的影响

中国人. 为研究添加丙酸钙对育肥牛生长性能及血液指标的影响,选择18头日本和牛公牛,随机分为2组,每组9头,试验组(EG)日粮中添加丙酸钙200 g/d,对照组(CG)正常饲喂,试验期间测定肉牛的生长性能和血液生化指标.结果表明:日粮中添加丙酸钙对肉牛干物质采食量、日增重和饲料转化率差异均不显著(P＞0.05),但是在试验的第3周和第5周试验组采食量比对照组有增加的趋势(0.05＜P＜0.10),而且从数值上来看,试验组的饲料转化率为11.41,要高于对照组的12.40;添加丙酸钙能显著增加采食3h后的血液尿素氮(P＜0.05)；试验组血液总蛋白与对照组相比有升高的趋势,血糖和甘油三酯含量有降低的趋势(0.05＜P＜0.10)；其他血液生化指标差异均不显著.本试验结果表明,高精料育肥期添加200 g/d的丙酸钙没有显著提高肉牛的生长性能,作用效果不明显。

英语. In order to provide theortical bases for the utilization of calcium propionate in ruminant production,eighteen Wagyu Bulls were selected to study the effects of Calcium propionate supplementation on growth and blood parameters of finishing beef cattle fed high level nutrition.The experimental animals were randomly divided into two groups,where 9 heads per group.The experimental group（EG） was supplemented with 200 g/d calcium propionate,while the control group（CG） was fed normally.The results showed that：there was no significant difference on dry matter intake,daily gain and feed conversion rate between EG and CG（P0.05）,however,dry matter intake of EG had increasing tendency compared with the CG in third week and fifth week（P0.10）.Although not statistically significant,feed conversion rate of the test group（11.41） is higher than the control group（12.40）.After feeding three hours,the urea nitrogen of EG was significantly higher than CG（P0.05）;EG increased the total protein compared with CG（0.05P0.10）,while the blood glucose and triglyceride in EG decreased（P0.10）.There were no significant differences in the other blood parameters（P0.05）.The experiment results showed that,supplying calcium propionate under high concentration fattening system could not improve animal growth performance.