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RISS 인기검색어
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- 저자 : 최재국(J . K . Choi) (검색결과 1 건)
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- 유료
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최재국(J . K . Choi),고용균(Y . G . Goh),홍병주(B . J . Hong) 한국축산학회 1991 한국축산학회지 Vol.33 No.2
This study was carried out to evaluate the effect of feeding probiotics on growth performance, rumen characteristic and blood composition of calves. [his experiment was carried out 6 weeks employing 4 month old Holstein male calves. The results obtained can be summarized as follows; 1. The average daily gain was increased 10 to 18 percent in calves fed probiotic or probiotic plus antibiotic compared with control (p$lt;.05). Dry matter intake was also increased in calves led probiotic and antibiotic (p $lt;.05). 2. Average improvement of feed efficiency was 8 percent in calves fed only probiotic or both probiotic and antibiotic compared with control. 3. Throughout the experimental period, the number of scouring days were slightly decreased with addition of probiotics. Number of E. Coli colony units were also decreased in calves fed probiotics. 4. Ruminal pH was not altered by addition of prohiotics. However, total volatile fatty acids and individual acids (acetate and propionate) production were higher in calves fed probiotic than control. Thus C/C ratio was affected by addition of prohiotics. 5. Blood components did not differ between treatments except for increased blood glucose in both calves fed probiotics and probiotic plus antibiotic.
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