دوره 11، شماره 30 - ( زمستان 1399 )
جلد 11 شماره 30 صفحات 48-39 |
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Yarahmadi B, mohamadi Saei M, Cheqeni A, Papi N, Aghashahi A. (2020). The Effect of Canola Seed (Raw and Roasted) and Dietary Concentrate Level on Growth Performance and Quantitative and Qualitative Carcass Traits of Lori Male Lambs. rap. 11(30), 39-48. doi:10.52547/rap.11.30.39
URL: http://rap.sanru.ac.ir/article-1-1061-fa.html
URL: http://rap.sanru.ac.ir/article-1-1061-fa.html
یاراحمدی بهروز، محمدی ساعی محسن، چگنی علیرضا، پاپی نادر، آقاشاهی علیرضا. اثر دانه کلزا (خام و برشته) و سطوح کنسانتره جیره بر عملکرد و صفات کمی و کیفی لاشه بره‌های نر لری پژوهشهاي توليدات دامي 1399; 11 (30) :48-39 10.52547/rap.11.30.39
بخش تحقیقات علوم دامی مرکز آموزش و تحقیقات کشاورزی و منابع طبیعی لرستان ، سازمان تحقیقات، آموزش و ترویج کشاورزی
چکیده: (2334 مشاهده)
این تحقیق به‌منظور بررسی اثر دانه کلزا (خام و برشته) و سطح کنسانتره جیره بر عملکرد رشد و صفات کمّی و کیفی لاشه بره‌های نر نژاد لری انجام شد. برای انجام آزمایش، تعداد 54 رأس برهی نر 0/86±30 کیلوگرمی انتخاب شد. تیمارها شامل دو سطح دانه کلزا (خام و برشته) و سه سطح کنسانتره (60، 70 و 80 درصد) بوده که بر اساس آزمایش فاکتوریل با طرح پایه کاملاً تصادفی (3×2) با سه تکرار (هر تکرار شامل 3 رأس بره) انجام شد. اثر دانه کلزا (خام و برشته) و سطح کنسانتره جیره بر افزایش وزن و ضریب تبدیل غذایی معنی‌دار شد (0/05>p). بیشترین افزایش وزن و بهترین ضریب تبدیل غذایی به‌ترتیب با میزان 230 گرم و 52/5 در بره‌های تغذیه‌شده با دانه کلزا برشته و 70 درصد کنسانتره بود. دانه کلزا (خام و برشته) و سطح کنسانتره جیره اثر معنی‌داری روی درصد گوشت لخم، درصد کل چربی لاشه و درصد لاشه سرد و گرم داشت (0/05>p). بالاترین راندمان لاشه، وزن لاشه سرد بدون دنبه و درصد گوشت لخم مربوط به بره‌های تغذیه‌شده با دانه کلزا برشته و 70 درصد کنسانتره بود (0/05>p). نتایج نشان داد خصوصیات کیفی از جمله pH، ترکیب شیمیایی و رنگ گوشت تحت تأثیر جیره‌های آزمایشی قرار نگرفت اما درصد گوشت لخم در تیمار 70 درصد کنسانتره و دانه کلزا برشته بیشتر از سایر تیمارها بود. نتایج این تحقیق نشان داد تیمار دانه کلزا برشته و 70 درصد کنسانتره به دلیل خصوصیات عملکردی بالاتر و صفات لاشه بهتر نسبت به تیمارهای دیگر برتر بود.
نوع مطالعه: پژوهشي |
موضوع مقاله:
تغذیه نشخوارکنندگان
دریافت: 1398/8/6 | ویرایش نهایی: 1399/12/19 | پذیرش: 1399/4/10 | انتشار: 1399/12/19
دریافت: 1398/8/6 | ویرایش نهایی: 1399/12/19 | پذیرش: 1399/4/10 | انتشار: 1399/12/19
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