Effect of dietary fat source and pellet binder on growth performance, prececal nutrient digestibility, and carcass traits in Ross 308 broilers

Document Type : Research Paper


Department of Animal Science, School of Agriculture, Shiraz University, Shiraz, I. R. Iran



This research aimed to compare the effect of two sources of fat and three levels of a pellet binder on pellet quality, growth performance, prececal nutrient digestibility, carcass, and economic traits in Ross 308 broilers. Two hundred and forty-day-old broiler chickens were applied in a 2 × 3 factorial arrangement in a completely randomized design with four replicates and ten birds in each replicate. The dietary treatments were two fat sources (soybean oil and fat powder) and three levels of a commercial binder named Glomatin® (0, 2, and, 4% in grower and 0, 3, and 6% in finisher diets). The data were subjected to the procedure of General Linear Models (GLM) of SAS, version 9.4 (P ≤ 0.05). Birds fed the soybean oil-containing diet with the second level of Glomatin® binder (2% in grower and 3% in finisher diets respectively) showed the best feed conversion ratio (FCR) in the whole period, and the highest prececal dry matter digestibility, ether extract digestibility, and economic profit. It concluded that increasing the physical quality of the pellet diet by adding a binder in soybean oil-containing diets had an optimum level (2% in grower and 3% in finisher diets respectively). Over that optimum level, it could harm FCR, prececal nutrient digestibility, and finally, profitability.


Article Title [Persian]

اثر منبع چربی و پلت چسبان در جیره غذایی بر عملکرد رشد، گوارش‌پذیری پیش‌سکومی مواد مغذی و خصوصیات لاشه جوجه‌های گوشتی راس 308

Authors [Persian]

  • محمد درانی
  • محمد رضا رضوانی
بخش علوم دامی دانشکده کشاورزی، دانشگاه شیراز، شیراز، ج. ا. ایران
Abstract [Persian]

 این پژوهش، با هدف بررسی اثر دو منبع چربی و سه سطح یک پلت چسبان بر کیفیت پلت، عملکرد رشد، گوارش‌پذیری پیش‌‌‌سکومی مواد غذایی و صفات لاشه و اقتصادی جوجه های گوشتی راس 308 انجام شد. آزمایش با استفاده از 240 قطعه جوجه گوشتی یک روزه در قالب یک آزمایش فاکتوریل 3×2  بر پایه طرح کاملا تصادفی با چهار تکرار و 10 پرنده در هر تکرار انجام شد. تیمارهای غذایی شامل دو نوع منبع چربی (روغن سویا و پودر چربی) و سه سطح از یک پلت چسبان تجاری بنام گلوماتین (صفر، دو و چهار درصد در دوره رشد و صفر، سه و شش درصد در دوره پایانی) بودند. داده‌ ها با نرم افزار آماری SAS نسخه 9/4 با رویه مدل خطی واکاوی و در سطح احتمال پنج درصد (P ≤ 0.05) با هم مقایسه شدند. پرندگانی که با جیره حاوی روغن سویا و سطح دو پلت چسبان گلوماتین (دو درصد در مرحله رشد و سه درصد در مرحله پایانی) تغذیه شده بودند،دارای بهترین ضریب تبدیل خوراک در کل دوره و بیشترین گوارش پذیری ماده خشک، چربی و سوددهی اقتصادی بودند. بدین ترتیب مشخص شد که افزایش کیفیت فیزیکی پلت که از طریق افزودن پلت چسبان به جیره ی دارای روغن سویا حاصل شده بود دارای حد بهینه‌ای (دو درصد در مرحله رشد و سه درصد در مرحله پایانی) است. بنابراین، پلت بیش از حد بهینه می‌تواند آثار منفی بر ضریب تبدیل غذایی، گوارش پذیری مواد مغذی، و نهایتا سوددهی اقتصادی داشته باشد.

Keywords [Persian]

  • پلت چسبان گلوتامین
  • جوجه های گوشتی
  • چربی و روغن
  • کیفیت فیزیکی
  • گوارش پذیری پیش سکومی
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