Study On The Growth Performance Of Different Oils During The Fattening Period Of Cherry Valley Meat Ducks

In this experiment,2160 cherry valley meat ducks were selected and randomly divided into 6 treatment groups(each treatment group had 6 replicates,with 60 ducks per replicate).The effects of adding lard,duck oil,soybean oil,duck shell oil,chicken oil,and pure duck oil to the diet on the production performance,intestinal morphology,and oil content of cherry valley meat ducks were measured at three time periods of 14-22 day old,23-29 day old,and30-39 day old.The results showed that after adding duck oil and duck shell oil to the diet,the average daily feed intake(ADFI)of cherry valley meat ducks aged 14-22 days was significantly higher than that of the lard group(P < 0.05).Compared with the lard group,the average daily gain(ADG)of cherry valley meat ducks aged 14-22 days in the duck shell oil group and soybean oil group significantly increased(P < 0.05).After adding soybean oil to the diet,the ADFI of 23-29 day old cherry valley meat ducks was significantly higher than that of the lard group(P < 0.05).In addition,there was no significant difference in F/G between 14-22 day old and 23-29 day old cherry valley meat ducks with different oils(P > 0.05).Compared with the pure duck oil group and the duck oil group,the ADFI of cherry valley meat ducks aged30-39 days in the duck shell oil group and soybean oil group was significantly increased(P <0.05).After adding pure duck oil to the diet,the ADG of cherry valley meat ducks aged 30-39 days was significantly higher than that of the soybean oil group(P < 0.05).Compared with the chicken oil and soybean oil groups,adding pure duck oil to the diet significantly reduced the F/G of cherry valley meat ducks aged 30-39 days(P < 0.05).There was no significant effect of different oils on the crypt depth and velvet to crypt ratio of the duodenum and jejunum of cherry valley meat ducks(P > 0.05).Compared with the lard and soybean oil groups,the chicken oil and duck shell oil groups showed a significant decrease in villus height.(P < 0.05);the villus height of the pure duck oil and duck oil groups was significantly higher than that of the chicken oil group,and the other differences were not significant(P > 0.05).Analysis of variance showed that different oils had no significant effect on the crypt depth and velvet to hide ratio of cherry valley meat ducks(P > 0.05).Compared with the duck oil and soybean oil groups,the pure duck oil,duck shell oil,and chicken oil groups showed a significant decrease in villus height(P < 0.05).The villus height of the lard group was significantly higher than that of the chicken oil group(P < 0.05),while the other differences were not significant(P > 0.05).Compared with the chicken oil group,the soybean oil group significantly increased the ileal crypt depth of cherry valley meat ducks(P < 0.05).Compared with the pure duck oil,duck oil,chicken oil,and lard groups,the 22 and 39 day abdominal fat rates of the duck shell oil and soybean oil groups were significantly reduced(P < 0.05);Compared with other lipid groups,the soybean oil group had a significant decrease in the 29 day abdominal fat rate(P < 0.05),while there was no significant difference in other groups(P > 0.05).Compared with the pure duck oil,duck oil,and chicken oil groups,the duck shell oil,lard oil,and soybean oil groups significantly reduced their sebum rate on the 22 nd and 29 th day(P < 0.05).Compared with the pure duck oil,duck oil,duck shell oil,and chicken oil groups,the 39 day sebum rate of the lard and soybean oil groups was significantly reduced(P < 0.05),while there was no significant difference in other groups(P > 0.05).Compared with other lipid groups,the muscle fat rate of the duck oil group significantly decreased on the 22 nd and 29 th day(P < 0.05).Compared with the pure duck oil,duck oil,and lard groups,the muscle fat percentage of the duck shell oil,chicken oil,and soybean oil groups was significantly increased(P < 0.05),while the other groups showed no significant differences(P > 0.05).This study takes Cherry Valley meat ducks as the experimental object.By adding different proportions of duck oil,duck shell oil,chicken oil,lard,and soybean oil to the basic diet and adjusting the metabolic energy preset of pure duck oil,the study investigates its impact on the production performance,intestinal morphology,and oil content of Cherry Valley meat ducks,providing scientific basis for further scientific and rational use of oil.