Effects of fermented sweet potato residue on growth performance,serum biochemical indicators,and digestive enzyme activity of broiler chickens
This experiment added different levels of fermented sweet potato residue to the daily feeding of broiler chickens to study the effects on their growth performance,meat quality,and serum immune indicators.180 broiler chickens on 40 days were selected for the experiment and evenly divided into 4 groups,namely the control group and the experimental groupⅠGroup(2.5%fermented sweet potato residue addition group),Experiment Ⅱ group(5.0%fermented sweet potato residue addition group),and Experiment Ⅲ group(10.0%fermented sweet potato residue addition group),with 5 replicates in each group and 9 broilers in each replicate.The experimental period is 30 days,during which the broilers are free to feed.The results showed that compared with the control group,adding different levels of fermented sweet potato residue to the diet had a significant impact on the final weight,average daily weight gain,and feed weight gain ratio of broiler chickens(P＜0.05).Among them,the group adding 5.0%fermented sweet potato residue had the most significant effect on improving the growth performance of broiler chickens(P＜0.05).The average daily weight gain of broiler chickens increased by 11.61%compared to the control group,and the feed weight gain decreased by 15.71%compared to the control group;Secondly,adding different levels of fermented sweet potato residue to the diet had a significant impact on immune indicators such as Ig A,Ig G,and Ig M in the serum of broiler chickens(P＜0.05).Among them,the immune indicators of the group added with 5.0%fermented sweet potato residue showed the most significant difference compared to the control group(P＜0.05),with Ig A,Ig G,and Ig M increased by 15.86%,20.11%,and 42.11%,respectively.Finally,adding different levels of fermented sweet potato residue to the diet significantly affected the activities of digestive enzymes such as trypsin and lipase in the intestines of broiler chickens(P＜0.05).Among them,the group added with 0.50%plant extract showed the most significant difference in digestive enzyme activity indicators compared to the control group(P＜0.05),with trypsin and lipase activities increased by 21.14%and 23.71%,respectively.The research results indicate that adding 5.0%fermented sweet potato residue to the diet has the most significant effect on promoting the growth of broilers,and can improve the feed efficiency of broilers.
万方数据
维普
