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KMID : 1024620060260020212
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Food Science of Animal Resources
2006 Volume.26 No. 2 p.212 ~ p.217
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Effects of Feeding High Quality Roughage (Timothy Hay) during Growing Period on Growth Performance and Carcass Characteristics of Hanwoo Steers
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Kim Byung-Ki
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Abstract
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Effects of feeding high quality roughage (timothy hay) in growing period on growth performance and carcass characteristics during 24 month (5 month from 28 month to) in twenty of Hanwoo steers were investigated. The hanwoo steers were randomly allotted to 2 treatments (10 heads/treatment) ; rice straw group (control) and timothy hay group (treatment). The final body weights of rice straw group and timothy hay group on 28 month were 667.70 kg and 681.75kg, respectively. The daily gain of total period was slightly higher in timothy hay group (0.83kg ) than in rice straw group (0.81 kg). The daily roughage intake in the growing period was tended to be higher in timothy hay group (4.27kg ) than rice straw group (3.80 kg). The carcass grades (yield grade and quality grade) and Longissimus dorsi area were significantly higher in timothy hay group (, 2.02 and 2.20 point) than in rice straw group (, 2.00 and 1.60 point respectively) (p<0.05), and were affected by the feeding with high quality roughage in the growing period.
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KEYWORD
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Hanwoo steer, rice straw, timothy hay, feed intake, growth performance, carcass characteristics
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