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
2020/06/24ایمن 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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