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

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%.