effects ofdifferentlevels ofoil-extracted propolis on immune system ofbroiler chicks againstnewcastle virus
نویسندگان
چکیده
biosecurity in the production of broiler chickens is very important but it is hard or even impossible to maintain; hence, promotion of immune responses could control diseases in chickens. at present study, the effect of six levels of oil-extracted propolis (0, 50, 100, 150, 200 and 250 mg/kg ration) on immune system against newcastle virus was studied using a completely randomized design with 360 chickens. blood antibody ratio against the newcastle virus (hi test), the weight of thymus, bursa fabricius and the percentage of lymphocytes were measured for a period of 42 days and the data were analyzed. the results indicated that the rate of antibody has significantly (p
منابع مشابه
effects of different levels of oil-extracted propolis on immune system of broiler chicks against newcastle virus
biosecurity in the production of broiler chickens is very important but it is hard or even impossible to maintain; hence, promotion of immune responses could control diseases in chickens. at present study, the effect of six levels of oil-extracted propolis (0, 50, 100, 150, 200 and 250 mg/kg ration) on immune system against newcastle virus was studied using a completely randomized design with 3...
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تحقیقات دامپزشکیجلد ۶۵، شماره ۱، صفحات ۱۹-۲۳
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