Effects of compound acidifier on growth performance,intestinal flora and blood biochemical and immune indexes of piglets
In order to explore the effects of compound acidifier on growth performance,intestinal flora,blood biochemical and immune indexes of piglets,80 piglets aged 25 days were randomly divided into 4 groups,with 4 replicates in each group and 5 piglets in each replicate,and 0%,0.1%,0.2%and 0.3%compound acidifier were added to the basic diet respectively.The results showed that compared with the control group,the final weight and average daily feed intake of piglets increased significantly after adding acidifier(P＜0.05),and the average daily weight gain of piglets increased significantly after adding 0.2%and 0.3%compound acidifier(P＜0.05),and the feed-to-weight ratio decreased significantly(P＜0.05).In addition,compared with the control group,the diarrhea rate and mortality rate of piglets were significantly reduced after adding acidifier(P＜0.05).The number of lactic acid bacteria in the gastrointestinal tract of piglets in groups Ⅰ,Ⅱ and Ⅲ increased significantly(P＜0.05),while the number of Escherichia coli decreased significantly(P＜0.05).Compared with the control group,the serum albumin and total protein contents of piglets in groups Ⅰ,Ⅱ and Ⅲ increased significantly(P＜0.05),and the urea nitrogen content decreased significantly(P＜0.05).The contents of immunoglobulin G and immunoglobulin A in serum of piglets in groups Ⅰ,Ⅱ and Ⅲ increased significantly(P＜0.05),and the content of anti-inflammatory factor IL-4 increased significantly(P＜0.05).Therefore,the compound acidifier can improve the growth performance of piglets,improve the composition of intestinal flora and blood biochemical indexes,and improve immune function.Under the experimental conditions,the appropriate addition level of compound acidifier is 0.2%.
compound acidifying agentpigletsgrowth performanceintestinal florablood biochemistryimmune index
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