Park Byung Ki, Lee Dong Kyo, Ahn Jun Sang, Park Joong Kook, Kim Min Ji, Son Gi Hwal, Shin Jong Suh
Nonghyup Feed Co., LTD, Seoul 05398, Korea.
Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea.
Asian-Australas J Anim Sci. 2019 Aug;32(8):1128-1136. doi: 10.5713/ajas.18.0753. Epub 2019 Jan 4.
This study was conducted to investigate the effects of dietary levels of tapioca residue on growth performance, carcass characteristics, and meat composition in Hanwoo steers.
Twenty-eight steers were randomly assigned to one of four dietary groups; T0 (0% tapioca residue), T6.7 (6.7% tapioca residue), T9 (9% tapioca residue), and T12 (12% tapioca residue).
Supplementation with tapioca residue had no effect on overall growth performance. The concentration of plasma total cholesterol was higher in T6.7 than in other treatments (p<0.05). Dietary levels of tapioca residue did not affect carcass yield or the quality traits of Hanwoo steers. The lightness, redness, and yellowness of the longissimus muscle of Hanwoo steers were higher in T6.7 than in other treatments (p<0.05). Cohesiveness, gumminess, chewiness, and resilience were lower in T6.7 than in other treatments (p<0.05).
The results of the present study indicate that supplementation with tapioca residue does not exert any negative effects on growth performance, carcass characteristics, and meat composition in Hanwoo steers. However, as the dietary level of tapioca residue increased, the intake of concentrate intake decreased, and tapioca supplementation greater than 6.7% did not substantially improved the marbling score.
本研究旨在探讨不同日粮水平的木薯渣对韩牛生长性能、胴体特性和肉质成分的影响。
28头阉牛被随机分配到四个日粮组之一；T0（0%木薯渣）、T6.7（6.7%木薯渣）、T9（9%木薯渣）和T12（12%木薯渣）。
添加木薯渣对总体生长性能没有影响。T6.7组的血浆总胆固醇浓度高于其他处理组（p<0.05）。木薯渣的日粮水平不影响韩牛的胴体产量或品质性状。韩牛背最长肌的亮度、红度和黄度在T6.7组高于其他处理组（p<0.05）。T6.7组的内聚性、胶黏性、咀嚼性和弹性低于其他处理组（p<0.05）。
本研究结果表明，添加木薯渣对韩牛的生长性能、胴体特性和肉质成分没有负面影响。然而，随着木薯渣日粮水平的增加，精料摄入量减少，添加量超过6.7%的木薯渣并不能显著提高大理石花纹评分。
