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돼지에 있어서 品種,産次 및 分娩季節이 産仔數에 미치는 效果
申源執,申源執,申源執 전북대학교 농업과학기술연구소 1983 農大論文集 Vol.14 No.-
Effects of breed, parity and season of farrowing on litter size were estimated on the basis of data obtained from 372 litters(3,545 pigs) of Landarce, Berkshire, Duroc, Yorkshire and raised at the Kimjae Vreeding station over 8 year period from the spring of 1973 to the winter of 1980. Results obtained are summarized as follows: 1. The least square means over all litters studied were 8.13± 0.16 pigs for the litter size alive and 9.09±0.20pigs for the total litter size. 2. The effects of breed showed statistical significance at the 1% level for the both of the traits studied. For both of the traits, Landrace, Duroc and Yorkshire tended to be lager than Perkshire and Hampshire. 3. The effects of parity also showed significant differences at 1% level. The litter size was the smallest for the lst parity and the largest for the 4th parity and over. 4. The effects of farrowing season were not statistically significant for the both of the traits studied. The litter size tended to be lager in those farrowed in the spring and fall than the summer and winter.
DNA 분석을 통한 한우 , 연변황우 및 화우의 유전적 특성
신원집,여정수,김재우,신수길,정진우,이지홍 한국축산학회 1999 한국축산학회지 Vol.41 No.4
This study was conducted to identify the genetic parameters and genetic relationships among 3 cattle breeds of Hanwoo (Korea), Yanbian yellow cattle (China), and Wagyu (Japan). DNA fingerprinting was prepared using M13 probe and Pst 1 enzyme. Genetic homogencities of Hanwoo and Yanbian yellow cattle were comparatively lower than that of Wagyu, suggesting genetic improvement by active breeding program for Wagyu compared to Hanwoo and Yanbian yellow cattle and possibility of improvement capacity for Hanwoo and Yanbian yellow cattle. Genetic similarities between breeds were not significantly different among them, suggesting that these 3 breeds have been raised independently without any inflow or outflow of gene source for a while.
신원집,Sin, Won-Jip 대한양돈협회 1990 養豚 Vol.12 No.9
자돈의 폐사는 대부분 생후3일 이내에 발생한다.이러한 손실을 줄이는 방법중에 하나가 저장에너지를 많이 가진 자돈을 분만시키고, 분만후에는 모돈에게 지방함량이 많은 젖을 분비하게 하여 육설율을 높이는 것이다.이와 같은 목적을 위해서는 임신말기에 고에너지 사료인 유지사료를 첨가하여 급여하는 것이 바람직하다