葡萄糖酸对肉鸡生产性能及养分表观消化率的影响

Effects of Gluconic Acid on Growth Performance and Apparent Digestibility of Nutrient Substance in Broiler Chickens

选取1日龄罗斯308肉仔鸡540只,随机分为6个处理,每个处理6个重复,每个重复15只。处理Ⅰ为对照组,饲喂基础日粮,处理Ⅱ、Ⅲ、Ⅳ、Ⅴ和Ⅵ在基础日粮中分别添加0.08%、0.15%、0.20%、0.30%和0.40%葡萄糖酸(GA)。研究葡萄糖酸对肉鸡生产性能及营养物质表观消化率的影响,探讨葡萄糖酸在肉鸡日粮中应用的可行性。结果表明:①与对照组相比,0.15%和0.20%添加组显著提高0～21日龄、22～42日龄鸡的日增重(P<0.05);0.20%添加组降低0～21日龄料重比2.67%(P<0.05),0.15%添加组降低22～42日龄料重比1.72%(P<0.05),0.15%和0.20%添加组分别降低试验0～42日龄料重比1.89%和1.61%,达到显著水平(P<0.05);GA对肉鸡日采食量无显著影响(P>0.05)。②21日龄时,0.15%～0.30%添加组显著提高粗蛋白和钙的表观消化率(P<0.05),0.15%和0.20%添加组显著提高磷的表观消化率(P<0.05);42日龄时,0.15%、0.20%和0.40%添加组均显著提高粗蛋白和磷的表观消化率(P<0.05),0.15%～0.30%添加组显著提高钙的表观消化率(P<0.05)。

Five hundred and forty one-day-age Rose 308 broiler chickens were randomly assigned into 6 groups,6 replications each greup,15 chickens each replication. The control group Ⅰ was provided basal diet,treatments Ⅱ、Ⅲ、Ⅳ、Ⅴ and Ⅵ were basal diet added 0.08%,0.15%,0.20%,0.30% and 0.40% gluconic aeid（GA） to study the effects of GA on growth performance and apparent digestibility of nutrient substance and to investigate the feasibility of GA on broiler chickens. The results indicated that： ①The addition of 0.15% and 0.20% GA significantly increased day weight gain in 0 to 21,22 to 42 and 0 to 42 days age （P〈0.05）;addition of 0.20% GA significantly decreased FIG by 2.67% in 0 to 21 days age（P〈0.05） ,addition of 0.15% GA significantly decreased FIG by 1.72%（P〈0.05）in 22 to 42 days age,addition of 0.15% and 0,20% GA significantly decreased FIG by 1.89% and 1.61% in 0 to 42 days age （P〈0.05）,respectively;GA had no significant differences in feed intake （P〉0.05）.②In 21 days age,the addition of 0.15% to 0.30% GA significantly increased the apparent digestibility of crude protein and calcium（P〈0.05）,addition of 0.15% and 0.30% GA significantly increased the apparent digestibility of phosphor （P〈0.05）;In 42 days age,addition of 0.15% ,0.20% and 0.40 GA significantly increased the apparent digestibility of crude protein and phosphor（P〈0.05）,0.15% to 0.30% GA significantly increased the apparent utilization rate of calcium（P〈0.05）.