نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش‌آموخته دکتری، گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران.
2 دانشیار، گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران.
3 استادیار، گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران.
چکیده
تأثیر اسانس آویشن باغی و روغن کلزا بر عملکرد، صفات ایمنی و ریخت‌شناسی روده با استفاده از 432 قطعه جوجه گوشتی نر یک روزه سویه راس 308 به‌صورت آزمایش فاکتوریل 3×3 در قالب طرح کاملاً تصادفی شامل سطوح مختلف اسانس آویشن باغی (صفر، 300 و500 ppm) و روغن کلزا (یک، سه و پنج درصد) با نه تیمار و چهار تکرار بررسی شد. در کل دوره پرورش، جوجه های دریافت‌کننده سه درصد نسبت به یک درصد روغن کلزا و جوجه های دریافت‌کننده 300 ppm نسبت به بدون اسانس آویشن باغی افزایش وزن بیش‌تری داشتند (p<0/05). استفاده از سه درصد روغن کلزا+ 300 ppm اسانس آویشن باغی باعث افزایش درصد ران نسبت به یک درصد روغن کلزا شد. در سطوح یک و پنج درصد روغن کلزا با افزایش سطح اسانس آویشن باغی به جیره، غلظت‌های کلسترول و LDL خون کاهش و HDL خون افزایش پیدا کرد (p<0/01). سطوح سه و پنج درصد روغن کلزا+ 300 و 500 ppm اسانس آویشن باغی در جیره جوجههای گوشتی باعث افزایش درصد لنفوسیت و تیتر آنتیبادی علیه بیماری نیوکاسل و کاهش درصد هتروفیل و نسبت هتروفیل به لنفوسیت خون شدند (p<0/05). جوجه های دریافت‌کننده جیره حاوی اسانس آویشن باغی بیش‌ترین نسبت ارتفاع پرز به عمق کریپت را داشتند (p<0/01). براساس نتایج به‌دست‌آمده، میتوان از سطح سه درصد روغن کلزا+ 300 ppm اسانس آویشن باغی در جیره جوجههای گوشتی جهت بهبود عملکرد، توان ایمنی و صفات بیوشیمیایی خون استفاده کرد.
کلیدواژه‌ها
عنوان مقاله [English]
Effect of different levels of rapeseed oil and garden thyme essential oil on performance, immune traits and intestinal morphology of broiler chickens
نویسندگان [English]
- Mohammad Ali Abbasi 1
- shokoufe ghazanfari 2
- seyed davood sharifi 2
- Hassan Ahmadi Gavlighi 3
1 Department of Animal and Poultry Science, College of Aburaihan, University of Tehran, Pakdasht, Tehran-Iran
2 Department of Animal and Poultry Sciences, College of Aburaihan, University of Tehran, Pakdasht, Tehran-Iran
3 Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University
چکیده [English]
The effect of garden thyme essential oil (TEO) and rapeseed oil (RO) on performance, immune traits and intestinal morphology using 432 one-day-old Ross 308 male broiler as a (3x3) factorial experiment in a completely randomized design including different levels of TEO (0, 300 and 500 ppm) and RO (1, 3 and 5 percentage) were evaluated with 9 treatments and 4 replicates. Throughout the rearing period, broiler chickens receiving 3% gained more weight than 1% of RO and chickens receiving 300 ppm gained more weight than those without TEO (P˂0.05). The use of 3% RO + 300 ppm TEO increased the thigh percentage compared to 1% RO. At 1 and 5 percentage levels of RO, with increasing levels of TEO in the diet, blood cholesterol and LDL concentrations decreased and blood HDL increased (P<0.01). Levels of 3% and 5% of RO + 300 and 500 ppm of TEO in broiler chicken diets increased lymphocyte percentage and antibody titer against Newcastle disease and decreased heterophil percentage and heterophil to lymphocyte ratio of blood (P<0.05). Broiler chickens receiving diet containing TEO had the highest ratio of villi height to crypt depth (P<0.01). Based on the results, the level of 3% rapeseed oil + 300 ppm thyme essential oil in the diet of broiler chickens can be used to improve performance, immunity and biochemical traits of blood.
کلیدواژه‌ها [English]
- Antioxidant
- Broiler chickens
- Essential oil
- Immune system
- Intestinal morphology
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