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The application study of the Polygonum cuspidatum slag powder on the diet of mountain chickens

Kuang Zheshi,Zhao Xiangjie,Ye Mingqiang,Chen Xiaofeng,Luo Guoqing,Zhang Xuefeng  
Two hundred and forty mountain chickens with 6-week age,similar in weight and somatotype,were randomly divided into four groups.GroupⅠwas control group,feeding basal diet,and Polygonum cuspidatum slag powder(PSP) was supplied at 3%,6%,9% in group Ⅱ,Ⅲ,Ⅳ.The study lasted three weeks.The effects of PSP added into diets on growth performance,immune organ index and serum biochemical parameter of mountain chickens were investigated.The results were as follows: Feed intake and ADG inⅡ,Ⅲ,Ⅳ groups were improved lower than groupⅠ,but not significant(P0.05).The weight ratio for thymus,spleen and bursa of fabricius in the treatment group were respectively increased by 17.4%,28.1% and 31.7% at most while the blood biochemical indicators were not significant(P0.05).The results showed that PSP did no harm to mountain chickens.Although feeding excessive PSP couldn't improve mountain chickens' growth performance,it could improve the immunity and reduce the morbidity.So PSP was suitable for farming chickens in the mountain and forest area.
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