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Iranian Journal of Parasitology، جلد ۸، شماره ۳، صفحات ۴۷۴-۴۸۰
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عنوان انگلیسی Effect of zinc on humoral and cell-mediated immunity of broilers vaccinated against coccidiosis.
چکیده انگلیسی مقاله Background: The aim of the present study was the comparison of humoral and cell-mediated immunity in broilers fed with different levels of zinc during a coccidiosis challenge. Methods: One hundred and forty- four one-day-old broiler chicks were used with three dietary zinc (40, 120 and 200 mg/kg). At 14 d of age, all birds were inoculated orally with 5×10 3 sporulated oocysts of E. Tenella . At 2, 22, 32, 42 days of age, the blood serums were tested for antibody titer against New-castle disease vaccine, using the standard HI test. On day 42 the sum of ni-trite and nitrate based on the reduction of nitrate to nitrite by cadmium and white blood cell count (WBC) using a hemocytometer were measured. Results: At 42 d, levels of 120 and 200 mg significantly ( P < 0.05) increased the antibody titer in compare with the control. The peak response of CBH was observed at the level of 200 mg Zn/kg diet. Also both level of 120 and 200 mg Zn/kg diet increased WBC count and sum of nitrite and nitrate in serum compared with the control. Conclusion: The levels of 120 and 200 mg Zn/kg diet could be considered as a non-pharmacologic booster of immunity in broilers chicks infected with E. Tenella .
کلیدواژه‌های انگلیسی مقاله Coccidiosis,Immunity,Zinc
نویسندگان مقاله سبحان سجادی فر | sobhan sajadifar
department of epidemiology and parasitology, faculty of veterinary medicine and zootechnics, armenian national agrarian university, yerevan, armenia.


هادی میران زاده | hadi miranzadeh
department of veterinary, university of applied science and technology, institute of science applied higher education of jahad -e- agriculture, isfahan, iran.

سازمان اصلی تایید شده: دانشگاه جامع علمی کاربردی (University of applied science and technology)

میلاد موذنی | milad moazeni
department of veterinary, university of applied science and technology, institute of science applied higher education of jahad -e- agriculture, isfahan, iran.

سازمان اصلی تایید شده: دانشگاه جامع علمی کاربردی (University of applied science and technology)

نشانی اینترنتی http://ijpa.tums.ac.ir/index.php/ijpa/article/view/467
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