نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته کارشناسی ارشد، گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران.
2 دانشیار،گروه علوم دامی، دانشکده علوم دامی و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران.
3 دانشیار،گروه صنایع غذایی، دانشکده علوم دامی و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران.
چکیده
این آزمایش به منظور بررسی اثر اسانس آویشن بر عملکرد، و برخی فراسنجه‌های فیزیولوژیکی جوجه های گوشتی تغذیه شده با جیره حاوی گندم ، با استفاده از 264 قطعه جوجه گوشتی (راس 308 ) با آرایش فاکتوریل 3×2 با دو سطح گندم (صفر و 50 درصد جیره)و سه سطح اسانس آویشن (صفر،200 و 400 میلی‌گرم در کیلوگرم) در قالب طرح کاملاً تصادفی، با چهار تکرار در سیستم بستر انجام شد. فراسنجه‌های عملکردی به‌صورت هفتگی بررسی شدند. جمعیت میکروبی، خصوصیات لاشه و فراسنجه‌های لیپیدی خون در سن 42 روزگی اندازه گیری شد. نتایج نشان داد افزودن اسانس آویشن به جیره حاوی گندم، باعث افزایش خوراک مصرفی جوجه‌های گوشتی در کل دوره‌های آزمایش شد (0/05>P). در دوره آغازین افزایش وزن پرندگانی که از جیره حاوی 400 میلی‌گرم اسانس و 50 درصد گندم تغذیه شدند بیشتر از پرندگان تغذیه شده با جیره بدون اسانس یا بدون گندم بود (0/05>P). پرندگان مصرف کننده جیره بدون گندم حاوی اسانس آویشن، غلظت LDL خون کمتری داشتند (0/05>P). درحالیکه افزودن اسانس آویشن در سطح 400 میلی گرم به جیره بدون گندم باعث افزایش غلظت HDL خون شد (0/05>P). جیره حاوی گندم بدون اسانس، چربی حفره بطنی بالاتری در مقایسه با سطوح 200 و 400 میلی‌گرم اسانس در جیره بدون گندم و نیز سطح 400 میلی‌گرم اسانس در جیره حاوی گندم داشت (0/05>P). نتایج نشان داد که افزودن اسانس آویشن در سطح 400 میلی‌گرم در کیلوگرم به جیره حاوی گندم، با توجه به افزایش مصرف خوراک و بهبود برخی فراسنجه‌های فیزیولوژیکی در جوجه‌های گوشتی، می‌تواند مفید باشد.
کلیدواژه‌ها
عنوان مقاله [English]
Effect of dietary addition of Thyme essential oil on performance, carcass characteristics and micro-flora of broilers fed diet containing wheat
نویسندگان [English]
- Seyyed Majid Azarm 1
- Somayyeh Salari 2
- Mohsen Sari 2
- Mohammad Reza Ghorbani 2
- Mohammad Hojjati 3
1 Department of Animal Science, Animal Science and Food Technology Faculty, Agricultural Sciences and Natural Resources University of Khuzestan,
2 Department of Animal Science, Animal Science and Food Technology Faculty, Agricultural Sciences and Natural Resources University of Khuzestan, Ahvaz, Iran
3 Department of Food Science, Animal Science and Food Technology Faculty, Agricultural Sciences and Natural Resources University of Khuzestan,
چکیده [English]
This experiment was conducted to evaluate the effect of Thyme essential oil on performance and some physiological parameters of broiler chickens fed diets containing wheat in a completely randomized design with a 2×3 factorial arrangement using 264 broilers (Ross 308) in ground floor. Treatments consisted of 2 levels of wheat (0 and 50% of the diet) and 3 levels of essential oil of Thyme (0, 200 and 400 ppm). Performance parameters were recorded weekly. Determination of micro-flora, carcass characteristics, and blood parameters were done on day 42. The results showed that adding the Thyme essential oil to the diet containing 50% wheat increased feed intake at the all period of experiment. Body weight gain was increased significantly in the birds that consumed 50% wheat with 400 ppm essence compared to the birds consumed the diet without wheat or without essence at the starter period. The birds consumed the diet without wheat with essence had lower blood concentration of LDL. Although, adding essence at the level of 400 ppm to the diet without wheat increased significantly blood concentration of HDL. The diet contained 50% wheat without essence had higher abdominal fat compared to the diet with 200 and 400 ppm of essence without wheat and also the diet contained 50% wheat with 400 ppm essence. Overall, the use of Thyme essence at the level of 400 ppm in wheat-based diet is recommended for increasing feed intake and improving some physiological parameters of broiler chickens.
کلیدواژه‌ها [English]
- Broiler chicken
- Carcass characteristics
- Thyme essence
- Weight gain
- Wheat
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