丁酸钠对云南武定鸡生长性能的影响

Effects of Sodium Butyrate on Growth Performance of Yunnan Wuding Chickens

选用1日龄云南武定肉仔鸡400只,随机分为5个处理组,每组4个重复,每个重复20只鸡。5个处理组分别为A组(基础日粮,对照组)、B组(基础日粮+杆菌肽锌50mg·kg-1,抗生素组)、C组(基础日粮+丁酸钠250mg·kg-1)、D组(基础日粮+丁酸钠500mg·kg-1)、E组(基础日粮+丁酸钠750mg·kg-1)。试验期21d,研究丁酸钠对云南武定鸡的生长性能的影响。试验结果表明,云南武定鸡的平均日增重、平均日采食量、饲料增重比与死淘率在对照组与各处理组之间差异均不显著(P>0.05),随着日粮中丁酸钠添加水平的增加,云南武定鸡的平均日增重与平均日采食量有升高的趋势,而饲料增重比与死淘率有下降的趋势。丁酸钠对云南武定鸡的生长性能可能有积极的提高作用。

Four hundred Yunnan Wuding chickens（one day old） were used to investigate the effect of sodium butyrate on growth performance of broilers. The chickens were divided into five groups in this study（four replicates for each group, and twenty chickens per replicate）. The groups were as follows： group A with basal diet and as control group, group B with basal diet and antibiotics（50 mg·k^-1 zinc bacitracin）, group C with basal diet and 250mg·k^-1 sodium butyrate, group D with basal diet and 500mg·k^-1 sodium butyrate, and group E with basal diet and 750 mg·k^-1 sodium butyrate. Average daily gain and average daily feed intake of chickens at 7, 14, and 21 days old were recorded. At 14 and 21 days old, the growth performance of Yunnan Wuding chickens was studied. The results showed that there were no significant differences in the average daily gain, average daily feed intake, feed-weight ratio, and death ratio of Yunnan Wuding chickens among control and treatement groups （P〉0.05）. The average daily gain and feed intake of Yunnan Wuding chickens increased along with increasing supplementation level of sodium butyrate. The feed-weight ratio, and death ratio of Yunnan Wuding chickens decreased along with increasing supplementation level of sodium butyrate. Sodium butyrate may have a positive effect on the improvement of growth performance of Yunnan Wuding chickens.