日粮膨化血粉水平对育肥鹅生产性能和消化酶活性的影响

Effects of Different Levels of Expanded Blood Powder on Production Performance and Activities of Digestive Enzymes of Fattening Goose

选择300只56日龄健康无病的豁眼鹅,随机分为3组,分别在日粮中添加1.5%、3.0%、4.5%的膨化血粉,每组设5个重复,每个重复20只鹅。研究不同比例膨化血粉对肥育鹅生产性能和消化酶活性的影响。结果表明:3.0%膨化血粉组的平均日增重、料肉比显著优于其余两组(P<0.05),1.5%膨化血粉组和4.5%膨化血粉组之间差异不显著(P>0.05)。平均日采食量3.0%膨化血粉组高于其余两组,但差异不显著(P>0.05)。脂肪酶、淀粉酶活性三组间差异均不显著(P>0.05)。胃蛋白酶、胰腺胰蛋白酶活性3.0%膨化血粉组显著优于其余两组(P<0.05)。这表明在育肥鹅日粮中添加3%的膨化血粉最适宜。

To study effects of different levels of expanded blood powder on production performance and activities of digestive enzymes of fattening goose,300 Huoyan geese of 56 days age were allotted to 3 groups.Each group had 5 replicates,20 geese per replicate.The 1.5%,3%,4.5% expanded blood powder were added in diets,respectively.The results showed that,average daily gain（ADG）of 3% group was significantly higher than that of the other two groups（P0.05）,F/G of 3% group was significantly lower than that of the other two groups（P0.05）.There were no significant differences in ADG,F/G between 1.5% group and 4.5% group（P0.05）.Average daily feed intake（ADFI）of 3% group was higher than that of the other two groups（P0.05）.There were no significant difference in lipases and amylases among these groups（P0.05）.The activcties of proteases in gastric contents and pancreas contents were higher than those of the other two groups（P0.05）.Combined all indexes,the best level of expanded blood powder supplemented in the diets for fattening Huoyan goose was 3.0%.