添加黄秋葵对儋州鸡生长性能、屠宰性能、肉品质及消化酶活性的影响

试验旨在研究儋州鸡日粮中添加黄秋葵对其生长性能、屠宰性能、肉品质及消化酶活性的影响。选用健康、体重相近的90日龄儋州公鸡120只，随机分为5组，每组3个重复，每个重复8只鸡。对照组饲喂基础日粮，Ⅰ~Ⅳ组分别在基础日粮中添加0.5%、1.0%、1.5%、2.0%黄秋葵粉。试验期28 d。结果显示：与对照组相比，Ⅰ~Ⅲ组平均日增重显著提高（P < 0.05），料重比显著降低（P < 0.05），Ⅳ组与对照组相比差异不显著（P > 0.05）；与对照组相比，Ⅱ、Ⅲ组屠宰体重、屠宰率、全净膛率、半净膛率、胸肌重均显著提高（P < 0.05），Ⅰ组除屠宰体重显著高于对照组外（P < 0.05），其余指标与对照组间差异均不显著（P > 0.05），Ⅳ组各指标与对照组相比差异均不显著（P > 0.05）；Ⅰ~Ⅲ组滴水损失率、剪切力显著低于对照组（P < 0.05）；熟肉率、肌肉pH显著高于对照组（P < 0.05）；Ⅱ、Ⅲ组胰腺、十二指肠、空肠中胰蛋白酶、脂肪酶、淀粉酶活性均显著高于对照组（P < 0.05），Ⅳ组除脂肪酶活性显著高于对照组外（P < 0.05），其余与对照组间差异均不显著（P > 0.05）。结果提示，在基础日粮中添加黄秋葵粉的适宜比例为1.5%，可有效改善儋州鸡的生长性能、屠宰性能、肉品质及消化酶活性。

Effects of Adding Okra on Growth Performance,Slaughter Performance,Meat Quality and Digestive Enzymes Activity of Danzhou Chickens

The experiment was designed to study the effect of okra on the growth performance,slaughter performance,meat quality and digestive enzymes activity of Danzhou chicken. 120 chicken with similar weight and 90 days old were selected randomly and divided into 5 groups with 3 replications per group and 8 chicken per replication. Control group was fed with basal diet,while chickens in groupsⅠ,Ⅱ,Ⅲ and Ⅳ were fed with the 0.5%,1.0%,1.5% and 2.0% okra added to basal diet,respectively. The trial lasted for 28 d. The results showed that compared with control group,the average daily gain of groupsⅠ,Ⅱ and Ⅲ were significantly increased (P < 0.05),the F/G were significantly decreased (P < 0.05), while group Ⅳ showed no significant significance with control group (P > 0.05);The slaughter weight, slaughter rate,eviscerated rate, half eviscerated rate and chest muscle weight of groups Ⅱ and Ⅲ were significantly increased (P < 0.05).The slaughter weight of groupⅠ was significantly increased (P < 0.05), while other indexes were showed no significant difference with control group (P > 0.05).All slaughter performance indexes of group Ⅳ were showed no significant difference with control group (P > 0.05). The drip loss rate and shear force in groups Ⅰ,Ⅱ and Ⅲ were significantly lower than control group (P < 0.05),while the cooked meat rate and pH value were significantly increased (P < 0.05).The trypsin,lipase and amylase activity of pancreas,duodenum and jejunum in groups Ⅱ and Ⅲ were significantly higher than that of control group (P < 0.05),while except lipase activity,group Ⅳ showed no significant difference with control group (P > 0.05). The results suggested that the addition of okra in the basal diet was 1.5% which could significantly improve the growth performance, slaughter performance,meat quality and digestive enzymes activity of Danzhou chicken.