تأثير استخدام المكعبات العلفية على الاستهلاك ومعدل زيادة الوزن عند الحملان العواسي
Abstract
نفذت تجربة البحث في محطة فديو لتربية الأبقار والأغنام التابعة لقسم الإنتاج الحيواني في كلية الزراعة بجامعة تشرين في الفترة الواقعة بين 1/4/2005 و 7/6/2005 باستخدام اثني عشر خروفاً ذكراً من سلالة العواس بعمر حوالي خمسة أشهر ونصف .
أشارت النتائج إلى تفوق حملان المجموعة الرابعة G4 بزيادة الوزن اليومي وبلغت حدها الأقصى (231)غ/يوم مقارنة مع بقية المجموعات G1-G2-G3 وبفارق معنوي (P<0.01)
كما تفوقت حملان المجموعة الثانية G2 (218 غ/ يوم) مقارنة مع حملان المجموعة الأولى G1 (الشاهد) وG3 (167-189 غ/يوم) على التوالي وكان الفرق معنوياً (P<0.01) .
أما بالنسبة لمعامل التحويل الغذائي حيث بلغت كمية العلف اللازم لكل كيلو غرام وزن حي حدها الأقصى عند حملان المجموعة الأولى G1 (الشاهد) (6.8 كغ علف /كغ وزن حي) مقارنة مع حملان المجموعة الرابعة G4 وكان الفرق معنوياً (P<0.01) .
Twelve awassi rams -five months and a half old- in Fiddeo farm for dairy cows and sheep breeding between 1/4/2005 & 7/6/2005.
The live weight gain of (G4 group) (231) g/day was significantly greater (P < 0.01) than G1 , G2 , G3 .
Improving the blocks as protein supplementation increased the live weight gain of lambs.
The live weight gain of G2 (218) g/day was significantly greater (P < 0.01) than control (G1) (167) .
The lowest feed converting rate (5.9) kg of G4 was also significantly greater
(P < 0.01) than control (G1) (6.8) .
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