통계적 적률을 이용한 한우 암소 도축 월령 분포 변화 분석: 2014년~2025년을 중심으로

초록

This study analyzed structural changes in the slaughter age distribution of Hanwoo cows between 2014 and 2025 using statistical moments (first to fourth order). Using monthly slaughter data by age from the Beef Traceability System, the mean (first moment), variance (second central moment), skewness (third standardized moment), and kurtosis (fourth standardized moment) were calculated to compare and examine the distributional shifts between the two periods. The main findings are as follows. First, when restricted to the prime reproductive age group (20–60 months), the average slaughter age of cows significantly declined between 2014 and 2025. Second, a significant increase in variance shows that cow slaughtering, which was previously concentrated in specific age groups, has spread across a wider and more diverse range of ages. Third, the shift of skewness to a positive (+) value indicates that the slaughter age distribution shifted toward younger age groups. Finally, the decrease in kurtosis suggests a reduction in the slaughter of extreme younger and older cows, reflecting a relatively stabilized and flatter slaughter age distribution. This moment-based analysis makes a notable methodological contribution by quantitatively capturing the heterogeneity of the slaughter structure of Hanwoo cows, which cannot be adequately reflected by simple averages alone.

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