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김계웅(G . W . Kim),장현기(H . G . Jang),박홍양(H . Y . Park) 한국축산학회 1995 한국축산학회지 Vol.37 No.5
This study was carried out to investigate the effects of breed, sire and dam pedigree on the performance of imported purebred swine. Data used in this study was 6,472 records of Hampshire, Landrace, Yorkshire and Duroc breeding stock which were registered in the herd book of the Korea Animal Improvement Association. Their performance tests were conducted at the first Swine Performance Station from 1986 to 1992. Age at 30㎏ and 90㎏, average daily gain, feed conversion, backfat thickness, and selection index were estimated according to a breed, sire and dun pedigree by the Generalized Linear Model of SAS. The results obtained are summarized as follows ; 1. In age at 30㎏, the effects of a breed, sire and dam pedigree were highly significantly superior in Landrace with the average of 74.17±1.08 days, in progeny from Danish breeds with the average of 7295±096 days, and in progeny from American breeds with the average of 72.73±0.89 days. In age at 90㎏, the effects of a breed, sire and dam pedigree were significantly superior in Duroc with the average of 141.23±1.53 days, in progeny from Swedish breeds with the average of 137.90±4.03 days. and in progeny from American breeds with the average of 140.62±1.22 days. 2. In daily gain, the effects of breed, and sire pedigree were significantly superior in Durocs with the average of 927.49±13.89 g, and in progeny from Irish breed with the average of 911.961±36.95 g. However, there was not a significant difference in effect of a dam pedigree on that. In feed conversion, the effects of breed, and sire pedigree were significantly superior in Yorkshires with the average of 2.54±0.02 and in Denmark progeny with the average of 2.55±0.02. However, there was no significant effect of dam pedigree on that. 3. The effects of breed, sire and dam pedigree in backfat thickness were significantly thick in Landrace with the average of 1.52±0.03 ㎝, on progeny from Canadian breeds with the average of 1.50±0.03 ㎝, and in progeny from Swedish breeds with the average of 1.45±0.10 ㎝, respectively. In selection index, there were significantly superior difference in Duroc with the average of 190.58±2.19 For the effect of breed, and in progeny from Irish breeds with the average of 192.50±5.87 for the effect of sire progeny, and then, in Taiwan progeny with the average of 193.89±6.82 for the effect of darn pedigree.
김계웅(G . W . Kim),장현기(H . G . Jang),박홍양(H . Y . Park) 한국축산학회 1995 한국축산학회지 Vol.37 No.2
This study was carried out in order to investigate the effects of sex, farrowing year, and farrowing month on the performance test for purebred swine. Data used in this study were 6,472 records of Hampshire, Landrace, Yorkshire and Duroc breeding stock which were registered at the herd book of Korea Animal Improvement Association. Their performance tests were conducted at the first and second Swine Performance Station from 1986 to 1992. Age at 30㎏ and 90㎏, daily gain, feed conversion, backfat thickness, and selection index were estimated according to sex, farrowing year, and farrowing month by Generalized Linear Model of SAS. The results obtained were summarized as follows; 1. In age at 30㎏, there were highly significant differences in the breeding females with the average of 75.41±1.10 days for the effect of sex, in 1992 with the average of 74.96±1.11 days for the effect of farrowing year, and the effect of farrowing month was significantly difference on December with the average of 74.48±1.12 days. In age of 90㎏, the effect of sex was significantly better in breeding male with the average of 142.98±1.52 days than in female, the effects of farrowing year and month were highly significantly best in 1992, and on December, respectively. 2. Daily gain of breeding males with the average of 915.14±13.77g was significantly superior to that of females. The effects of furrowing year and month were significantly superior in 1991 with the average of 918.29±14.07g, and on December with the average of 911.13±14.28g, respectively, for the daily gain. In feed conversion, there are highly significant differences between males and females, the effects of furrowing year and month are significantly superior in 1992 with the average of 2.38±0.02, and on December with the average of 2.55±0.02, respectively. 3. In backfat thickness, the effects of sex, farrowing year, and farrowing month were highly significantly superior in breeding males with the average of 1.58±0.03㎝, in 1992 with the average of 1.49±0.03㎝, and on October and December with the average of 1.56±0.03㎝, respectively. In selection index, the effects of sex, furrowing year, and furrowing month were highly significantly superior in breeding males with the average of 194.05±2.18, in 1992 with the average of 192.46±2.26, and on December with the average of 192.46±2.26, respectively.