بررسی تاثیر گاز ازن بر پاسخ ایمنی، هماتوکریت و ضریب تبدیل در جوجه گوشتی

نوع مقاله: مقاله کامل

نویسنده

استادیار بهداشت و بیماریهای طیور، گروه تحقیقات دامپزشکی ، مرکز تحقیقات وآموزش کشاورزی و منابع طبیعی اصفهان، ایران

چکیده

یک واحد مرغ گوشتی به ظرفیت 40000 قطعه جوجه نژادکاب انتخاب و دو گروه شاهد و تیمار درآن تعیین (۱۰۰۰۰×۴) گردید، در گروه شاهد با ترکیبات شیمیایی معمول مراحل مختلف ضد عفونی انجام شد، در گروه تیمار با هوای ازن‌دار (0.1 - 0.3 ppm) و آب ازن دار
(0.8-1 ppm) مراحل مختلف ضد عفونی انجام شد، در روز اول ورود جوجه تیتر آنتی‌بادی علیه نیوکاسل، آنفلوانزا، برونشیت و گامبورو در20 قطعه جوجه تعیین وسپس با استفاده از واکسن‌های مناسب بیماری‌های فوق کلیه جوجه‌ها واکسینه شدند؛ در سنین 21 و 42 روزگی از تعداد 20 قطعه پرنده از هر گروه خون‌گیری و تیتر سرم علیه واکسن‌ها و مقدار هماتوکریت تعیین شد، همچنین در پایان مطالعه میانگین وزن نهایی، میزان تلفات نهایی و درصد حذف کشتارگاهی در هر دو گروه بررسی و نتایج با استفاده از آزمون T در گروه تیمار و شاهد مقایسه گردید. در مرحله 21 روزگی بین گروه‌ها در میزان تیتر ND اختلاف معنی‌داری وجود داشت (01/0 > p) این تفاوت در مقدار هماتوکریت نیز مشاهده شد (05/0 > p). در 4۲ روزگی اختلاف معنی‌داری بین تیمار و شاهد در تیتر ND و مقدار هماتوکریت وجود داشت (05/0 > p) تفاوت سایر موارد در دو گروه معنی‌دار نبود، مقایسه نتایج میانگین تلفات در گروه شاهد و تیمار و نیز مقایسه نتایج ضریب تبدیل نشان داد که گروه شاهد وضعیت بهتری داشته است. می‌توان گفت که کاربرد صحیح ازن در پرورش مرغ گوشتی نسبت به ضدعفونی کننده‌های شیمیایی دیگر سبب بهبود پاسخ ایمنی به واکسیناسیون، بهبود ضریب تبدیل، کاهش تلفات و کاهش حذف کشتارگاهی می‌شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Efficiency investigation of using Ozone on immune response ,PCV and FCR of broilers

نویسنده [English]

  • A. Nabinejad
By: Nabinejad, A., Assistant Professor of Veterinary Research Group,(Isfahan Agricultural And Natural Resources Research Center), Agricultural Research, Education, and Extension Organization (AREEO), Isfahan, IRAN.
چکیده [English]

For investigation of ozone application in broilers breeding, a broiler farm with a capacity of 40,000 chose (4 houses of 10000) and bred chicks for 45 days in two groups of treatment and control (4X10000), in the control groups conventional chemical disinfectantused for initial stages and along breeding time disinfection In the treatment group the ozonated air (0.1 - 0.3 ppm) and ozonated water (0.8-1 ppm) was used for initial and breeding period disinfection. The first day titer status were detected by sampling of 20 chicks. The herd vaccination for ND, AI, IB and IBD during the breeding time well done and blood sampledat 21 and 42 days for antibody titration and PCV evaluation. Using statistical T-test the results of treatment and control group compared. There was a significant difference
(P <0.01) in the ND titer and the PCV%(P <0.05) between groups at the day of 21 but were not significant difference for other factors. The analysis at 42 days of age just show significant differences in the ND titer and the PCV% between two groups (p <0.05). Mean mortality rate of control and treatment groups were 8.3% and 6.6% and condemned carcasses in slaughter house were 0.8% and 0.5% respectively. Comparison of mortality rate and FCR results of 2 groups, showed lesser mortality rate and FCR value intreatment group to control group.It is concluded that using Ozone improved immune response to vaccination and FCR and decreased the mortality rate and carcass condemnation.

کلیدواژه‌ها [English]

  • Ozone
  • Broiler
  • Immune response
  • FCR
  • PCV

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