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Nov 9, 2021Keywords:
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Performances of Arsi-Bale Sheep Fed on Lentil Straw with Various Levels of Concentrate Supplementation
Abstract
አህፅሮት
የምስር ገለባን ያለገደብ ከተለያየ መጠን የድጎማ መኖ ጋር የአርሲ-ባሌ በጎችን በመመገብ በዕድገታቸውና በስጋ ምርታቸው ላይ በሚያመጣው ለውጥ መሰረት አዋጭ የሆነዉን የድጎማ መኖ መጠን ለመለየት ይህ ሙከራ ተሰርቶ ነበር፡፡ የድጎማ መኖው መጠን 250, 300, 350, 400 እና 450ግራም, በቅደም ተከተል ለተጠኚ 1፣ 2፣ 3 ፣ 4 እና 5 ነበር፡፡በጎቹ በነበራቸው የመነሻ ከብደት ልዩነት መሰረት እያንዳንዳቸው ቡድኖች አምስት በጎች ያሉት በ7 ድግግሞሽ ተጠኝዎቹ ሁሉም ዓይነት የበግ ክብደት ላይ በእኩል ዕድል እንዲያርፉ ተደርጎ ለ84 ቀኖች ሙከራው ተሰራ፡፡ በዚሁ መሰረት በተካሄደው ጥናት 400 እና 450 ግራም የድጎማ መኖ የተሰጣቸው በጎች ያሳዩት የሰውነት ክብደትና የስጋ ምርት ከሌሎቸ የተሻል ሲሆን ለአንድ ኪ/ግ ክብደት የወጣው የመኖ ዋጋም ዝቅተኛ ነበር፡፡ በመሆኑም የምስር ገለባንና 400-450 ግራም የድጎማ መኖ በማብላት የአርሲ-ባሌ በጎችን ማድልብ አዋጭ ሊሆን ይችላል፡፡
Abstract
This experiment was conducted to evaluate the growth performance and carcass yield of Arsi-Bale sheep fed on lentil straw with concentrate supplementation. The dietary treatments were: lentil straw with concentrate supplement at 250 (T1), 300 (T2), 350 (T3), 400(T4) and 450 (T5) g lamb/day. Thirty-five yearlings Arsi-Bale lambs with the initial body weight of 20.8±1.5 kg (mean ± SE) were randomly allotted to the treatments in randomized complete block design. The concentrate levels had a significant (P< 0.05) effect on total DM intake with higher values in T3 (791.1), T4 (782.6), and T5 (826 g) than T1 (720.2) and T2 (735g) groups. The highest (P< 0.001) average daily live weight gain was attained by lambs in T4 (78 g) and T5 (84g). Feed conversion efficiency increased (P< 0.001) with an increase in the concentrated amount. Lambs supplemented 350, 400 and 450g concentrate had higher (P< 0.05) carcass weight (10.6-11.4 kg) than those supplemented 250 and 300g concentrate. The dressing percentage (42%) observed for T4 and T5 lambs was higher (P< 0.05) than the other groups (37.9-40.1%). The feed cost (birr/kg gain) in T1 (111) and T2 (97), was higher (P< 0.001) than that of other treatments (67-80 birr/kg gain). It can be concluded that 400-450g of concentrate is the optimum level, for improved feed consumption, live weight gain, FCE, feed cost per unit of live weight gain, and carcass yield of Arsi-Bale sheep fed on lentil straw as a roughage source.
