JARB Journal of Animal Reproduction and Biotehnology

OPEN ACCESS pISSN: 2671-4639
eISSN: 2671-4663

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Journal of Embryo Transfer 2010; 25(1): 57-66

Published online March 31, 2010

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

한우 씨수소의 상대적 수정능 추정에 관한 연구

이성수, 노승희, 박노형, 원유석

농협중앙회 한우개량사업소

Abstract

The conception rate of cow is a major factor in farm management. The environment of farm and management of cow are the best influencing factors on conception rate, and the fertility of bull is the second influencing factor. In Hanwoo bull, however, the informations limited to performance and carcass traits have been offered to Hanwoo farmer. Therefore, this study analysed the estimated relative conception rates (ERCR) for estimation of fertility of bulls, using the 8,892 mating data with 116 heads of prove bull to produce progeny. Mean of least square means of conception rate after first insemination was 50.95% in bull herds. On the standard of this mean, ERCRs after first insemination of each bull were analysed. Values ranged from -26.1% to +21.0%, the difference was 47.1%. Among 116 heads of bull analysed, KPN582 showed the highest ERCR as 21.0%, KPN550 (18.3%), KPN656 (16.7%), KPN632 (15.8%), KPN690 (14.9%) were gone behind, but KPN621 was the lowest as -26.1%, KPN680 (-21.3%), KPN674 (-16.2%), KPN569 (-15.9%), KPN699 (-14.9%) were succeeded. If ERCRs of Hanwoo bull will be offered to Hanwoo farmer, it will be worthwhile.

Keywords: Hanwoo, bull, fertility, estimated relative conception rate

Article

Journal of Embryo Transfer 2010; 25(1): 57-66

Published online March 31, 2010

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

한우 씨수소의 상대적 수정능 추정에 관한 연구

이성수, 노승희, 박노형, 원유석

농협중앙회 한우개량사업소, 농협중앙회 한우개량사업소, 국립한경대학교 낙농학과, 농협중앙회 한우개량사업소

한우 씨수소의 상대적 수정능 추정에 관한 연구

이성수, 노승희, 박노형, 원유석

농협중앙회 한우개량사업소

Abstract

The conception rate of cow is a major factor in farm management. The environment of farm and management of cow are the best influencing factors on conception rate, and the fertility of bull is the second influencing factor. In Hanwoo bull, however, the informations limited to performance and carcass traits have been offered to Hanwoo farmer. Therefore, this study analysed the estimated relative conception rates (ERCR) for estimation of fertility of bulls, using the 8,892 mating data with 116 heads of prove bull to produce progeny. Mean of least square means of conception rate after first insemination was 50.95% in bull herds. On the standard of this mean, ERCRs after first insemination of each bull were analysed. Values ranged from -26.1% to +21.0%, the difference was 47.1%. Among 116 heads of bull analysed, KPN582 showed the highest ERCR as 21.0%, KPN550 (18.3%), KPN656 (16.7%), KPN632 (15.8%), KPN690 (14.9%) were gone behind, but KPN621 was the lowest as -26.1%, KPN680 (-21.3%), KPN674 (-16.2%), KPN569 (-15.9%), KPN699 (-14.9%) were succeeded. If ERCRs of Hanwoo bull will be offered to Hanwoo farmer, it will be worthwhile.

Keywords: Hanwoo, bull, fertility, estimated relative conception rate