The aim of this study is to investigate the effects of fermented sugarcane bagasse on the growth performance,serum biochemical indicators,and intestinal morphology of meat ducks.Randomly divide 2000 healthy 1-day old meat ducks into 4 groups,with 10 replicates in each group,with 50 replicates per replicate.The experiment lasted for a total of 42 days.The experimental results showed that,under the premise of consistent initial body weight(P＞0.05),using 2%and 4%fermented sugarcane bagasse instead of rice bran significantly increased the final body weight of meat ducks by 1.6%and 3.5%,respectively(P＜0.05);Significantly increased the average daily gain of meat ducks by 1.7%and 4.8%,respectively;Replacing rice bran with 4%fermented sugarcane bagasse significantly reduced the feed to weight ratio of meat ducks by 2.1%;In addition,using fermented sugarcane bagasse instead of rice bran had no significant effect on the average daily feed intake of meat ducks(P＞0.05).The use of 2%and 4%fermented sugarcane bagasse instead of rice bran significantly increased the serum IgA and IgG content of meat ducks(P＜0.05);Replacing rice bran with 2%and 4%fermented sugarcane bagasse significantly increased the serum GSH-Px and SOD activities of meat ducks(P＜0.05);In addition,the use of fermented sugarcane bagasse instead of rice bran did not significantly affect the serum albumin,total protein,IgM content,and CAT activity of meat ducks(P＞0.05).The use of 2%and 4%fermented sugarcane bagasse instead of rice bran significantly increased the duodenal villus height and V/C value of meat ducks(P＜0.05);The use of 4%fermented sugarcane bagasse instead of rice bran significantly increased the jejunal villus height and V/C value of meat ducks(P＜0.05);In addition,using fermented sugarcane bagasse instead of rice bran had no significant effect on the depth of duodenal and jejunal crypts in meat ducks(P＞0.05).Under the conditions of this experiment,the optimal replacement amount of fermented sugarcane bagasse in the diet of meat ducks is 4%.
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