复合除臭剂对肉鸡生长性能、免疫器官指数、消化道pH、盲肠挥发性脂肪酸和盲肠菌群的影响

doi:10.16431/j.cnki.1671-7236.2016.12.019

Abstract

Abstract:

The experiment was conducted to study the effects of composite deodorant with different supplemental levels on growth performance,immune organ index,intestinal tract pH value,contents of volatile fatty acid and microflora in cecum of broilers. A total of 900 14-day-old healthy AA broilers were randomly assigned to 5 groups (groups Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ) with 6 replicates per group and 30 broilers per replicate. The experimental treatments were divided as follows:The broilers in group Ⅰ(control group) were only fed basal diet.0.5‰,1.0‰,2.0‰,3.0‰ composite deodorant were added in groups Ⅱ,Ⅲ,Ⅳ and Ⅴ,respectively. The experiment lasted for 28 days. The results showed as follows:The index of immune organ in group Ⅴ were the highest. The index of spleen and bursa increased by 37.74%,18.40% than that of control group on 28 days,respectively. The change of intestinal tract pH in group Ⅱ were the largest. pH value of ileum and cecum were significantly lower by 1.04,0.79 than that of control group (P<0.05),respectively. Compared with the control group,the contents of acetic acid,butyric acid and propionic acid in group Ⅲ were significantly reduced by 41.74%,35.96%,30.56% on 28 days old (P<0.05),respectively. The contents of acetic acid and butyric acid in group Ⅴ were significantly reduced by 38.04% and 44.52% on 42 days old (P<0.05),respectively. The numbers of Lactobacillus from cecum in treatment groups were more than that of control group,while the numbers of E.coli were less than that of control group. In conclusion,treatment groups could reduce the contents of volatile fatty acids obviously,improve the environment of digestive tract,enhance the immune organ index and there was no significant negative effect in improving growth performance. Considering all of the results,it was calculated that the broilers diet with 1‰ composite deodorant was the most appropriate.

Key words: composite deodorant; broilers; growth performance; immune organ index; digestive tract pH value; volatile fatty acids

CLC Number:

S831

LIU Nai-zhi, CHEN Jing, XU Hui, REN Tian-tian, ZENG Jia-jia, GU Wei. Effects of Composite Deodorant on Growth Performance,Immune Organ Index, Digestive Tract pH,Volatile Fatty Acid and Microflora in Cecum of Broilers[J]. , 2016, 43(12): 3214-3220.

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Effects of Composite Deodorant on Growth Performance,Immune Organ Index, Digestive Tract pH,Volatile Fatty Acid and Microflora in Cecum of Broilers

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