ایمن سازهای تغذیه ای، یک استراتژی ویژه در صنعت پرورش طیور

پس دان ۲
2020/05/07
عملکرد فیتازهای مختلف از لوله آزمایش تا لوله گوارش
2020/06/24

ایمن سازهای تغذیه ای، یک استراتژی ویژه در صنعت پرورش طیور

Nutritional immunomodulation a special strategy in poultry industry

نویسنده: دکتر فخرالدین عابد، متخصص تغذیه دام و طیور

Fardin.abed@gmail.com

مدیر مارکتینگ و تحقیقات شرکت لعل حیات وسام

بیش از چندین دهه انتخاب ژنتیکی برای شاخص­ های عملکردی مانند سرعت رشد، موجب به وجود آمدن نژادهای حساس­ تر به عفونت­ ها شده است (Huff et al., 2005). به عبارت دیگر، انتخاب برای رشد سریع، به شدت موجب کاهش پاسخ­ های سیستم ایمنی به چالش­ های عفونی شده است (van der Most, de Jong, Parmentier, & Verhulst, 2011). سویه­ های جدید مرغ و بوقلمون با رشد سریع، نسبت به سویه­ های وحشی و با رشد آهسته دارای سیستم ایمنی اکتسابی ضعیف­ تر (تولید آنتی بادی)، اما دارای پاسخ­ های التهابی با واسطه سلولی بیشتر هستند.

این امر می­ تواند موجب ناکارآمدی سیستم ایمنی در برابر باکتری ای بیماری­ زا باشد و اغلب تاثیرات نامطلوبی بر روی مصرف خوراک و شاخص­ های عملکردی می­ گذارد. (Cheema, Qureshi, & Havenstein, 2003). یکی از بحرانی­ ترین زمان­ ها در پرورش طیور، سنین ابتدایی بعد از خروج از تخم است زیرا پرنده هنوز سیستم ایمنی قدرتمندی در برابر عوامل بیماری ­زا ندارد. نتایج تحقیقات نشان داده که در سنین ۴ تا ۷ روزگی،  برخی از اعمال سیستم ایمنی مانند نابودی باکتری ها از روش اکسیداتیو توسط گلوبول­ های سفید، در نژادهای جدید نسبت به نژادهای وحشی، کاهش قابل ملاحظه ­ای یافته است. (Genovese, He, Lowry, Swaggerty, & Kogut, 2006).

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