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《Chinese Journal of Animal Nutrition》 2013-11
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Effects of Taraxacum Polysaccharides on Growth Performance and Immune Function of Growing Meat Rabbits from Weaner to 3 Months of Age

YANG Rui;LING Jinliang;LI Xuting;ZENG Fuqiang;LI Sicong;ZHANG Xiangyu;WANG Wuyan;Sichuan Academy of Animal Sciences;Chengdu Dingxin Rabbit Industry Development Co .,Ltd .;  
This experiment was conducted to study the effects of Taraxacum polysaccharides on growth performance and immune function of grow ing meat rabbits from weaner to 3 months of age,and to provide a theoretical support for exploitation of a new-style feed additive. A total of 160 35-day-old weaner rabbits with average body weight of(650 ± 50) g were randomly allocated into 4 groups with 2 replicates per group and 20 rabbits per replicate. The control group(groupⅠ) was fed a basal diet and experimental groups(groupsⅡ,Ⅲand Ⅳ) were fed the basal diets supplemented with 0.1%,0.3% and 0.5% Taraxacum polysaccharides,respectively. The experiment lasted for 50 days. The results show ed as follows: 1) the average daily gain in groups Ⅲ and Ⅳ was significantly higher than that in control group(P 0.05 and P 0.01,respectively),the ratio of feed to gain in group Ⅳ was significantly higher than that in control group and group Ⅱ(P 0.01). 2) The spleen index in groupsⅡ,Ⅲ and Ⅳ was significantly higher than that in control group(P 0.01),and the thymus index in groupsⅢ and Ⅳ was significantly higher than that in control group(P 0.01). 3) There was no significant difference in serum immunoglobulin A content among all groups(P 0.05),and the serum immunoglobulin M content in groups Ⅲ and Ⅳ was significantly higher than that in control group(P 0.01),the serum immunoglobulin G content in groups Ⅲ and Ⅳ was significantly higher than that in control group(P 0.05). It is concluded that dietary Taraxacum polysaccharides can improve growth performance and immune function of grow ing meat rabbits from weaner to 3 months of age,the appropriate supplementation is 0.5%.
【Fund】: 四川省畜禽良种繁育专项(SASA2009YZ005)
【CateGory Index】: S829.1
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