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조사료의 급여수준이 한우 거세우의 성장 및 육질에 미치는 영향
안병홍,안동원,류재숙,강효봉,정정수 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.5
Fifteen Hanwoo steers aged about 6 months and weighing about 180kg were randomly allotted into one of three levels(40-11%, 45-13% and 50-15%) of roughage from growing period to investigate the effects of levels of roughage on body gain, carcass grade, blood components and economic analysis of Hanwoo steers. These levels of roughage were manipulated at an interval of 50kg body weight untill body weight reached about 600kg. Steers fed 40-11% or 45-13% roughage did not differ in daily body gain but steers fed 50-15% roughage were significantly(p$lt;0.05) lower in daily body gain than steers fed 40-11% or 45-13% roughage. However, the ribeye area, marbling score, backfat thickness, beef color and fat color were not affected by the levels of roughage. Beef grade tended to improve with increasing levels of roughage in the ration. Blood components such as triglyceride and cholesterol were not affected by the levels of roughage. Steers offered 45-13% roughage during the growing period were the most profitable in economical analysis. Therefore, according to this study it can be concluded that feeding 45-13% roughage from the growing period to finishing period is desirable for Hanwoo steers which will be fattened untill they reach 600kg body weight.
조사료와 농후사료의 급여비율이 한우 거세우의 성장 및 도체특성에 미치는 영향
안병홍,송성철,류재숙 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.6
한우 거세우에게 육성기, 비육전기와 비육후기별로 조사료의 급여수준을 달리하여(35∼11%, 44∼12%, 53∼13%) 비육하였을 때 이들 급여수준이 증체량 및 도체특성에 미치는 영향을 조사하여 농후사료와 조사료의 적정 급여수준을 규명하고저 본 시험을 수행하였다. 한우 거세우의 농후사료 섭취량은 체중 450㎏까지는 체중의 1.8%∼1.9% 수준까지 서서히 증가하다가 450㎏ 이후부터는 감소하였고 조사료 섭취량은 체중 300㎏까지는 체중의 1.04∼1.44% 수준까지 증가하다가 300㎏ 이후부터는 감소하였다. 근내지방도 및 육질등급은 육성기때 조사료 44% 급여구가 다른 급여구에 비하여 높게 나타는 경향이었고 등지방두께는 얇았다. 그러므로 한우 거세우 비육시 조사료 급여수준은 육성기때 44% 수준으로 급여하는 것이 35%나 53% 수준으로 급여하는 것보다 바람직하다고 사료된다. This experiment was carried out to investigate the effects of proportion of concentrates and roughages on growth and carcass traits of Hanwoo steers. Concentrates and roughages were allotted three levels of 35 to 11%, 44 TO 12% and 53 to 13%, respectively from the growing period to finishing period. Concentrate and roughage intake of Hanwoo steers were increased progressively until body weight reached 450㎏ and 300㎏, respectively and reached 1.8 to 1.9% and 1.04 to 1.44% to body weight, respectively but thereafter were decreased gradually. Marbling score and beef grade were tended to be increased when steers were fed 44% roughage compared with the steers fed 35% or 53% at the growing period. Therefore, it can be concluded that feeding 44% of roughage is desirable rather than feeding 35% or 53% of roughage when steers are fattening.