품종, 성별 및 산차가 돼지의 경제형질에 미치는 영향

Abstract

Effects of Breed, Sex and Parity on Economic Traits of Swine Eun-Ae Shin Department of Animal Biotechnology, Graduate School of Industry Jeju National University, Jeju, Korea This study is based on data from 3,083 animals of a total of 4 breeds: Yorkshire, Landrace, Berkshire, and Duroc, which were on farm-testted from 2020 to 2022 at the Jeju Special Self-Governing Province Livestock Promotion Agency. It was estimated that the effects of breed, sex and parity affect major economic traits of swine: eye musle area, age at 90 kg, average daily gain, backfat thickness and lean percentage. The result in this study was summarized as followed; 1. The mean average test period, final body weight, eye muscle area, age at 90kg, average daily gain, backfat thickness, and lean percent of swine investigated were 151.59±7.73day, 99.89±11.96kg, 29.98±3.26㎠, 141.48±11.50day 652.43±71.94g, 11.91±2.36mm, and 60.23±2.38%, respectivery. 2. The eye muscle area was best in Yorkshire with 30.18±0.09cm² and worst in the Berkshire with 29.73±0.18cm². The age of 90kg, average daily gain, backfat thickness and lean percent were best in Duroc with 133.42±0.52day, 704.09±3.25g, 10.71±0.11mm and 61.39±0.11%. However the age of 90kg, average daily gain, backfat thickness and lean percent were worst in Berkshire with 149.21±0.56day, 608.16±3.73g, 13.84±0.12mm and 57.98±0.12%. 3. The eye muscle area, age at 90kg, average daily gain, backfat thickness and lean percent in male were 29.11±0.13cm², 136.15±0.45day, 688.22±2.78g, 10.82±0.09mm, 60.99±0.08% and 30.30±0.11cm², 143.47±0.38day, 639.08±2.37g, 12.32±0.08mm, 59.95±0.09% in female. All traits expect for eye muscle were better in male than in female. 4. The eye muscle area was best in Duroc Female with 30.48±3.20 cm² and worst in Yorkshire Male with 28.64±3.04cm². Age at 90kg, average daily gain and lean percent were exellent in Duroc Male and worst in Berkshire Female. Backfat thickness was best in Landrace Male with 9.80±1.67mm and worst in Berkshire Female with 14.68±2.70mm. 5. The eye muscle area was best in the over 10 parity with 31.01±0.71cm² and worst in 6 parity with 29.15±0.76cm². Age at 90kg was best in 7 parity with 138.37±2.81day and worst during 8~10 parity. Average daily gain was excellent in 7 parity with 677.28±17.58g. Backfat thickness, lean percent were best in first parity and worst during 8~10 parity. 6. The eye muscle area was best in spring with 30.53±0.19cm² and worst in winter with 29.70±0.15cm². Age at 90kg, average daily gain were best in spring with 138.73±0.68day, 665.84±4.27g and worst in autumn with 143.14±0.64day, 639.60±4.00g. Backfat thickness, lean percent were best in spring with 11.60±0.14mm, 60.73±0.14% and worst in summer with 12.06±0.14mm, 60.00±0.13%.