This study was conducted to evaluate the protein requirement for maintenance of fattening Korean black goat (Capra hircus coreanae). Six male goats with average initial body weight (BW) of 31.78±4.54kg and an average age of 8 months were used in this study. The experiment had a replicated duplicated 3×3 Latin square design for balancing carryover effects. In the course of the experiment, each of Black goats were fed three diets that were formulated to contain T1 (13%), T2 (16%) and T3 (19%) levels of crude protein (CP). A 14-day diet adjustment period was followed by a 5-day collection period. Dry matter intake (DMI) of groups fed diets with T2 was 966.67g/d which was higher than group fed diets with T1 and T3 were 925.14g/d and 936.08g/d each. Average daily gains (ADG) of black goats were the highest in T2(167.13g/d) But, there was no significant difference. Dietary protein levels affected the apparent digestibility of CP (p<0.05). A significant difference was found in CP intake among treatments and goats receiving T3, T2, and T1 recorded 181.23, 154.57, and 128.78g CP/d, respectively. This was excepted because CP intake is proportional to CP content of diet, which from highest to lowest was as follows: T3 (19%) > T2 (16%) > T1 (13%). Intercept of the regression equation between CP intake and CP balance indicated that maintenance CP requirement was 1.63g/BW0.75.

• 윤영식(건국대학교 의료생명대학 식품생명과학부, 충주, 380-701) | Yeong Sik Yun (Division of Food Bio Science, College of Medical Life Sciences, Konkuk University, Chungju 380-701, Korea,)
• 장세영(건국대학교 의료생명대학 식품생명과학부, 충주, 380-701) | Se Young Jang (Division of Food Bio Science, College of Medical Life Sciences, Konkuk University, Chungju 380-701, Korea,)
• 성혜진(건국대학교 의료생명대학 식품생명과학부, 충주, 380-701) | Hye Jin Seong (Division of Food Bio Science, College of Medical Life Sciences, Konkuk University, Chungju 380-701, Korea,)
• 당옥교(건국대학교 의료생명대학 식품생명과학부, 충주, 380-701) | Yu Jiao Tang (Division of Food Bio Science, College of Medical Life Sciences, Konkuk University, Chungju 380-701, Korea,)
• 정우령(건국대학교 의료생명대학 식품생명과학부, 충주, 380-701) | Yu Ling Ding (Division of Food Bio Science, College of Medical Life Sciences, Konkuk University, Chungju 380-701, Korea,)
• 박재현(축산환경관리원, 대전, 34065) | Jae Hyun Park (Institute of Livestock Environmental Management, Daejeon 34065, Korea)
• 문상호(건국대학교 의료생명대학 식품생명과학부, 충주, 380-701) | Sang Ho Moon (Division of Food Bio Science, College of Medical Life Sciences, Konkuk University, Chungju 380-701, Korea,) Corresponding author