Effects of dietary oils on growth performance, development of digestive organs and digestive enzyme activities in broilers
Two thousand and four hundred 1-day-old broilers were randomly assigned into 4 groups with 6 replicates for each.The diet for each group was respectively supplemented with the same proportion of crude rice bran oil(RBO),crude soybean oil(SO),lard(LO) and palm oil(PO).The results showed that in the earlier period,the average daily feed intake (ADFI) of RBO group was lower than those in SO and PO groups (P＜0.05),however,there was no significant difference between all the groups in average daily gain (ADG),ADFI and feed conversion ratio (FCR) in the whole period(P＞0.05).The activities of amylase and lipase of pancreas in SO and RBO groups were significantly higher than those in LO and PO groups (P＜0.05).Compared with PO group,the activities of lipase in intestinal contents decreased significantly in SO group (P＜0.05).In the later period,the ADFI of RBO group was lower than that of PO group (P＜0.05),and the organ indexes of heart and pancreas of RBO group were higher than those of other groups (P＜0.05).The activity of lipase of pancreas in SO group was significantly higher than that of PO group (P＜0.01),but a significant reduction of intestinal lipase activity in RBO group was observed (P＜0.05).The results indicated that oil varieties did not affect the growth performance of broilers in the whole period.The crude rice bran oil and crude soybean oil which contain rich unsaturated fatty acids could increase the digestive enzymes of pancreas and decrease the digestive enzymes of intestinal contents.
NETL
NSTL
万方数据
维普
