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The current study was conducted to determine the relationships of vitamin A on meat quality of Hanwoo as a basic study to manipulate vitamin A contents in feeds to produce high quality beef Concentrations of vitamin A in scrum and liver of Hanwoo steers(n＝328) were analyzed and correlation coefficients with carcass properties were evaluated Mean vitamin A concentration in the serum of Hanwoo steers in the early fattening period was 212.0±32.7 IU／㎗, and that in the late fattening period was 117.56±43.15 IU／㎗. Mean vitamin A concentration in the liver of Hanwoo steers in the late fattening period was 143.62±110 IJ／g expressing large variations might be depended on animals, feeds and farms. There were negative correlations between serum vitamin A concentration and marbling degree(r＝－0.24, P＜0.01), fat contents in M. Logissimus dorsi (r＝－0.21, P＜0.01), and beef quality grade(r＝－0.20, P＜0.01). Vitamin A-palmitate in liver also expressed negative correlations with fat contents in M. Logissimus dorsi (r＝－0.18, P＜0.01) and beef quality grade(r＝－0.16, P＜0.05). From the results obtained in the current study, we concluded that it might be possible to produce high quality beef in to determine vitamin A contents in feeds, feeding levels, and feeding periods.
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