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생시체중과 이유시 체중이 한우 거세우의 도체형질에 미치는 영향
송유나,이동희,조영규,메코넨 케팔라 타예,김명수,서강석 한국동물유전육종학회 2022 한국동물유전육종학회지 Vol.6 No.3
The purpose of this study was to investigate the relationship between the birth weight, weaning weight, and economic features of Hanwoo Steer using data obtained from the breeding farm established as the foundation for improvement goals for birth weight and weaning weight. Data on the birth weight, weaning weight, and carcass grade of 1,907 Korean cattle born between 2006 and 2019 was analyzed. Regarding the environmental effects, farm, year of birth, birth year-half year, weaning days, and carcass days data were used. A total of 2 models were established and analyzed to estimate the correlation between birth weight and weaning weight with carcass traits while considering environmental effects affecting traits. The result indicated that in the birth year-half year effect, as the age at birth increased from the year 2006 to 2019, the carcass weight, eye muscle area, backfat thickness, and marbling score increased significantly more in the first half year than the second half year (p<0.01). The phenotypic correlation results revealed a moderate association with birth weight and carcass weight, eye muscle area of 0.353 and 0.249 respectively. The associations between weaning weight and carcass weight, eye muscle area were 0.279 and 0.157 respectively. According to these results, the birth weight and weaning weight are associated with each carcass traits, indicating that they can be used as primary data to determine the correlation between the traits studied.