CAJ | 학술논문

组建8个独立血统10头公猪、50头母猪含2个品系的大白核心选育群，通过场内种猪测定，应用GBS育种软件估计单项育种值，根据综合选择指数大小进行选留。经过4个年份的选育，年份平均校正增重公猪提高7.90%，母猪提高7.41%，均达到差异显著（P<0.05），达100 kg体重日龄缩短了1.176 d；平均校正背膘厚公猪下降了9.54%，母猪下降了7.54%，均达到差异显著（P<0.05%），达100 kg体重背膘厚育种值减少0.159 mm，母猪总产仔数逐年提高，产仔数育种值增加0.029头；综合选择指数提高3.84%。选育结果表明，组建优秀的核心选育群，通过不同品系间的杂交，能够培育出高性能大白专门化母系种猪。
조건8개독립혈통10두공저、50두모저함2개품계적대백핵심선육군，통과장내충저측정，응용GBS육충연건고계단항육충치，근거종합선택지수대소진행선류。경과4개년빈적선육，년빈평균교정증중공저제고7.90%，모저제고7.41%，균체도차이현저（P<0.05），체100 kg체중일령축단료1.176 d；평균교정배표후공저하강료9.54%，모저하강료7.54%，균체도차이현저（P<0.05%），체100 kg체중배표후육충치감소0.159 mm，모저총산자수축년제고，산자수육충치증가0.029두；종합선택지수제고3.84%。선육결과표명，조건우수적핵심선육군，통과불동품계간적잡교，능구배육출고성능대백전문화모계충저。
In this study, the large white pig core group which consisted of eight independent bloodlines with ten boars and fifty sows was established. On-farm testing, individual breeding value estimated by GBS breeding software and the comprehensive selection in-dex were used to select generation core group. After four years breeding, the year average corrected weight of boars increased 7.90%, sows increased 7.41%, which reached the significant difference (P<0.05). The age up to 100 kg weight was shortened to 1.176 day and the average corrected backfat thickness of boars and sows dropped by 9.54% and 7.54% respectively, which reached the significant difference (P<0.05%).The breeding value of backfat thickness up to100 kg weight decreased 0.159 mm, the total number born in-creased year by year, the breeding value of number increased 0.029. Comprehensive selection index increased 3.84%.The results showed that specialized matriline of large white pig with high performance could be obtained through building excellent core breeding group and using hybridization between different strains.