اثر تغذیه میش های آبستن نژاد زندی در طول دوره اواسط تا اواخر آبستنی بر عملکرد و رفتار میش‌ها و بره‌ها در 24 ساعت پس از تولد

نوع مقاله : تغذیه

نویسندگان

گروه علوم دامی، دانشکده کشاورزی و منابع طبیعی، واحد کرج، دانشگاه آزاد اسلامی، کرج، ایران

10.22034/aej.2020.125284

چکیده

آزمایش حاضر به ‌منظور ارزیابی اثر تغذیه میش ‌ها با دو سطح تغذیه ‌ای متفاوت در طول اواسط و اواخر آبستنی بر عملکرد و رفتار میش ­ها و بره ­ها در طول 24 ساعت پس از تولد انجام شد. جهت انجام ازمایش 112 رأس میش‌ نژاد زندی تک قلوزا که آبستن بودند در 4 تیمار و 4 تکرار (هر تکرار حای 7 راس) به ­طور تصادفی در 2 سطح تغذیه ‌ای در اواسط و اواخر آبستنی تقسیم شدند. تیمارهای آزمایشی شامل: 1- تغذیه با علوفه 4 سانتی ­متر در اواسط آبستنی و تغذیه با علوفه 4 سانتی ­متر در اواخر آبستی (4-4)، 2- تغذیه با علوفه 4 سانتی ­متر در اواسط آبستنی و تغذیه با علوفه 2 سانتی ­متر در اواخر آبستی (2-4)، 3- تغذیه با علوفه 2 سانتی ­متر در اواسط آبستنی و تغذیه با علوفه 4 سانتی ­متر در اواخر آبستی (4-2)، 4- تغذیه با علوفه 2 سانتی ­متر در اواسط آبستنی و تغذیه با علوفه 2 سانتی ­متر در اواخر آبستنی (2-2)، بودند. برطبق نتایج وزن میش‌ ها و وزن تولد بره­ های آن­ ها که در اواسط و اواخر آبستنی از علوفه 4 سانتی­ متری استفاده کرده بودند، افزایش معنی­ داری نسبت به سایر گروه­ ها داشتند (0/05>p ). بره‌ های متولد شده از میش‌ های گروه 4-4 کم ­تر به سمت مادر خود برای ایجاد ارتباط حرکت کردند (0/05>p ). به ­طورکلی نتایج آزمایش حاضر نشان داد تغذیه میش ­های آبسنن در اواخر ابستنی با علوفه چهار سانتی ­متر می تواند عملکرد بهتری بر میش­ ها و بره های متولد شده داشته باشد.

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