Effects of Total Mixed Rations on Ruminal Characteristics, Digestivility and Beef Production of Hanwoo Steers
2003
Kim, K.H. | Lee, S.C. | Oh, Y.G. | Chung, C.S. (National Livestock Research Institute, RDA, Republic of Korea) | Kim, K.J. | Kim, K.S. (Kongju University, Kongju, Republic of Korea)
This experiment was carried out to compare the effects of feeding commercial formula feed and rice straw separately (control) versus a total mixed ration (TMR) on productivity of Hanwoo steers in late stage of fattening and on ruminal fermentation characteristics and digestibilities. Ruminal digesta from the cannulated cattle were sampled at 0, 1, 2, 3, 5, 8 hour after feeding,The steers fed TMR consumed 7.4kg per day and there was no difference between feeding systems. Daily weight gain was not significantly (P0.05) between feeding systems, however, TMR group showed lower daily gain than control group. The amount of feed consumption per kg weight gain was higher in TMR group than control group (10.5kg and 9.7kg, respectively), resulting in a greater efficiency of feed utilization for gain. In the result of appearance rates of quality grade A were 33% higher for TMR group than those in control group. Appearance rates of grade 1 showed 56% and 75% when fed the control and TMR, respectively.
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