بررسی مقایسه‌ای میزان وقوع سندرم آسیت در جوجه های گوشتی سویه‌‌های Ross و Arbor-Acres

محورهای موضوعی : آسیب شناسی درمانگاهی دامپزشکی

عادل فیضی ¹ (دانشگاه آزاد اسلامی، واحد تبریز، دانشکده دامپزشکی، گروه علوم درمانگاهی، تبریز، ایران)
کامروز کابلی ² (دانشگاه آزاد اسلامی، واحد تبریز، دانشکده دامپزشکی، دانشجوی دکترای حرفه‌ای دامپزشکی، تبریز، ایران)

تاریخ دریافت : 1390/03/25 تاریخ پذیرش : 1390/09/03 تاریخ انتشار : 1390/06/01

کلید واژه: جوجه‌های گوشتی, سندروم آسیت,

چکیده مقاله :

سندرم آسیت به تجمع غیرطبیعی مایع غیرآماسی در محوطه‌‌ بطنی جوجه‌های گوشتی اطلاق می‌شود. سندرم فوق یکی از مشکلات عمده صنعت طیور گوشتی محسوب می‌شود. هیپوکسی مهم ترین علت افزایش فشار خون ریوی است که به سبب وقوع سندرم آسیت در طیور گوشتی می‌باشد. در مطالعه‌ حاضر، 120 قطعه جوجه‌ گوشتی سویه‌ Ross (جنس نر) و 120 قطعه جوجه‌ گوشتی سویه‌ Arbor-acres (جنس نر) در دو گروه و هر گروه شامل سه تکرار 40 قطعه‌ای توزیع شدند. شرایط پرورش برای همه گروه‌ها از نظر دما، رطوبت، تراکم، تغذیه، واکسیناسیون و آب یکسان بود. جهت افزایش حساسیت جوجه‌ها به سندرم آسیت از دان پلت و استرس سرما استفاده گردید. بدین منظور از روز 7 پرورش تا 21 روزگی دمای 16 درجه‌ سانتی گراد اعمال شد. سپس دما یکباره به 22 درجه‌ سانتی گراد رسانده شد و تا آخر دوران پرورش ثابت نگه داری شد. میزان وقوع سندرم آسیت در جوجه‌های گوشتی سویه Arbor- acres بیشتر از جوجه‌های گوشتی سویه‌ Ross بود. در مورد پارامتر هماتوکریت در جوجه‌های گوشتی سویه Arbor – acres از هفته‌ سوم به بعد نسبت به جوجه‌های گوشتی سویه Ross، افزایش نشان داد که در روز 35 این تفاوت معنی‌دار بود (05/0p<). در پایان‌ دوره‌ 42 روزگی تفاوت میزان هماتوکریت بین دو گروه معنی‌دار نبود. افزایش رشد جوجه‌های سویهArbor-acres نسبت به جوجه‌های سویه Ross در هفته‌های چهارم و ششم تفاوت معنی‌دار نشان داد (05/0p<). با این حال در مقدار ضریب تبدیل نهایی بین دو سویه تفاوت معنی‌دار مشاهده نشد.

چکیده انگلیسی:

Ascites syndrome is an abnormal increase of non-inflammatory transudate in one or more of the peritoneal cavities or potential spaces. Ascites syndrome is considered as a main problem in broiler raising industry. Hypoxia is the factor for increase pulmonary blood pressure because of ascites syndrome in broilers. In this study, 120 pieces Ross variety broilers and 120 pieces Arbor-acres broilers were divided into two groups involving three with forty parts repetition. Raising conditions such as temperature, hum density, nutrition, vaccination and water were the same. In order to increase sensitivity broilers to ascites syndrome, pellet and cold stress were applied. For doing so, from 7 un days 16ºc was applied, then temperature reached to 22ºc and fixed until raising period. Ascites syndrome incidence rate in Arbor-acres chicks was more than Ross chicks. Hematocrite parameter was increased in Arbor-acres chicks from third weeks relative to Ross broilers it is meaningful in 35th day (p<0.05). At the end of 42 days period, there is a no meaningful difference in hematocrite between two groups. There is a meaningful increase in growth of Arbor-acres broiler relative to Ross in weeks 4&6 (p<0.05), So, a meaningful difference was not considered in conversion coefficient between both breed.

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