본 연구는 한우 거세우의 비육시 급여 조사료의 종류가 발육 및 도체특성에 미치는 영향을 구명하고자 수행하였다. 한우 거세우 21두를 3처리(건초, 갈대 및 갈대+볏짚), 처리당 7두씩 완전 임의 배치하였다. 시험결과 개시체 중 및 종료체중은 처리구별(대조, T1 및 T2)로 각각 125.5, 128.3 및 128.3 kg과 697.4, 614.6 및 706.7 kg으로 나타났다. 일당증체량은 대조구(0.70 kg/d)와 T2 처리구(0.71 kg/d)가 T1 처리구(0.60 kg/d)보다 향상된 경향을 나타났지만 유의적인 차이는 없었다. 건물섭취량은 유의적인 차이는 없었지만 T1 처리구가 다른 처리구에 비해 비교적 낮았다. 육량특성에서 도체중은 대조구와 T2처리구간에는 차이가 없었지만, T2처리구는T1 처리구에 비해 높았다(p<0.05). 등지방두께와 등심단면적은 대조구와 T2처리구가 T1처리구 보다 높았고, 육량등급(A:B:C, %)은 T1처리구(43:57:0)가 다른 처리구(대조구 0:71:29, T2 29:42:29)에 비해 높았다. 육질특성에서는 지방색과 조직감은 처리구 간 유의적인 차이가 없었다. 그러나 육색과 성숙도는 T2 처리구에 비해 T1 처리구가 유의적으로 높았다(p<0.05). 근내지방도 및 육질1등급이상 출현율은 T1처리구에 비해 대조구와 T2처리구가 높았다. 본 연구의 결과를 종합해 볼 때 거세한우 비육시 조사료로서 갈대와 볏짚을 혼합급여할 때 발육, 사료 이용성 및 도체 성적이 향상되어 갈대가 한우의 조사료원으로서 활용가치가 있는 것으로 판단되었다.
This study investigated the effects of diet of different forages on growth performance and carcass characteristics of Hanwoo steers. Twenty-one Hanwoo steers were randomly allocated to three groups (fed hay, reed, and reed with rice straw) of seven steers each. Initial and final body weights of control, T1, and T2 groups were 125.5, 128.3, 128.3 kg and 697.4, 614.6, 706.7 kg, respectively. Average daily gain tended to increase in controls (0.70 kg/d) and the T2 group (0.71 kg/d) but not as much in the T1 group (0.60 kg/d); however, there was no significant difference. DMI was not significantly different among the treatment groups, but T1 was relatively lower than the other groups. For the yield traits, carcass weight was not significantly different between controls and the T2 group but was greater in the T2 group compared to the T1 group (p<0.05). Back fat thickness and rib eye area were higher in controls and T2 compared to T1; yield grade (A:B:C, %) was greater in T1 (43:57:0) compared to the other groups (control 0:71:29; T2 29:42:29). For the quality traits, fat color and texture were not significantly different among groups. However, meat color and maturity were significantly greater in T1 compared to T2 (p<0.05). Marbling score and appearance rate of over 1st meat quality grade were greater in the control and T2 groups compared to the T1 group. Based on the results, growth performance, feed utilization, and carcass traits appeared to improve when roughage containing rice straw plus reed was offered. Therefore, reed is worth considering as a roughage source for fattening Hanwoo steers.
