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KMID : 1025520010430040497
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Journal of Animal Science and Technology
2001 Volume.43 No. 4 p.497 ~ p.506
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Effects of Loess and Oligosaccharide as Feed Additives for Holstein Calves to Increase the Growth Rate end Disease Resistance
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김준식/Kim, J. S.
최윤재/이보균/김명국/홍중산/김윤학/이홍구/Choi, Y. J./Lee, B. K./Jin, M. G./Hong, Z. S./Jin, R. H./Lee, H. G.
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Abstract
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This experiment was conducted to study effects of loess and a form of oligosaccharide (glucosamine-D) as feed additives for 4 days to 2 month-old Holstein calves on the disease resistance and the growth rate. The total weight gains(WG) of test group given 0.04% glucosamine-D and 3% loess as additives were 43.6㎏ and 37.2㎏, respectively, which were 10.1㎏ and 3.6㎏ higher weight gains compared to control group(33.5㎏). The potential influence of loess and glucosamine-D treatment on the distribution of various leukocyte cell types in the serum of test group was tested using flow cytometic method. CD4 antigen positive cells(i.e., T helper cell) were highest in test group feeding 0.04% glucosamine-D, white class II MHC-positive cell type(antigen presenting cells such as macrophages and dendritic cells) was lowest in 6% loess-feeding group. These results suggest that 3% loess and glucosamin-D were more effective as feed additives for 4 days to 2 month-old Holstein calves to increase the disease resistance and the growth rate than those of any other treatments.
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