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사료첨가제로서 황토와 올리고당이 홀스타인 어린송아지의 성장 및 항병력에 미치는 영향
김준식,최윤재,이보균,김명국,홍중산,김윤학,이홍구 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.4
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.
양질 조사료의 보충과 황토의 첨가수준이 한우의 성장성적, 육질 등급 및 경제성에 미치는 영향
홍중산,이홍구,이보균,김준식,최윤재,김윤학,김명국 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.1
본 연구는 6개월령의 한우 36두를 이용하여 양질 조사료의 보충(rice straw;RT, rice straw+cubed roughage;RCT)과 황토의 첨가수준(0%, 1%, 2% 황토)이 생산성, 육질 및 경제적 효과에 미치는 영향을 규명하기 위하여 실시하였다. 실험기간동안 볏짚에 양질 조사료의 보충 (cubed roughage, RCT)은 볏짚단독 처리(RT)에 비하여 일당증체, 사료효율 및 출하체중에서 각각 10%, 6.8%, 8.2%로서 유의적으로 증가되었으나(P<0.05), 황토의 첨가는 한우의 성장성적에 뚜렷한 효과는 없는 것으로 나타났고, 2%의 첨가수준은 오히려 감소되는 경향을 보였다. 육질 및 경제성 분석에서는 RCT구는 뚜렷한 개선효과를 보였지만, RT구에서는 황토 1%에서만 첨가 효과가 있는 것으로 나타났다. RCT구에서는 1%, 2% 모두가 0%에 비하여 보다 개선된 결과를 나타내었다. 이와 같은 결과들은 한우 비육에 있어서 황토의 첨가는 성장성적에는 뚜렷한 효과가 나타나지 않았지만 육질과 경제적 효과에서는 1%의 첨가는 개선효과가 있는 것으로 사료되며, 고급육 생산을 위한 황토의 첨가시에는 양질의 조사료 보충이 경제적 효과성을 더욱 향상시킬 것으로 사료된다. This study was conducted to estimate the effects of high quality cubed roughage and red clay (0%, 1%, 2%) on growth performance, meat quality and economical benefits. Thirty-six 6 month-old Korean native cattle, averaging 156㎏ of BW, were assigned to six groups in a 2 (rice straw : RT, rice straw+cubed roughage : RCT)× 3 (0, 1, 2% red clay). During experimental period, the high quality cubed roughage added into rice straw treatment (RCT) was superior to the only rice straw treatment (RT) on daily gain and feed efficiency and final weight 10%, 6.8%, 8.2% (P<0.05) respectively. But the addition of red clay did not affect and even 2% addition decreased those parameters. For meat quality and economical analysis, the addition of high quality cubed roughage made an outstanding result and for RT treatment, only 1% red clay indicated good effects while both 1% and 2% red clay were better than 0% for RCT treatment. From these results, it is assumed that the addition of red clay for fattening Korean native cattle has no effects on growth performance but 1% treatment has good results on improving meat quality and economical benefits. It also suggests that the combination high quality roughage and concentrated red clay is beneficial for producing high quality meat in with economical benefits.