http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이창수(C . S . Lee),유영복(Y . B . Yoo),나기준(K . J . Na),조병대(B . D . Cho),최병규(B . K . Choe) 한국축산학회 1994 한국축산학회지 Vol.36 No.4
Genetic differentiation between Korean Native Cattle (Hanwoo) and European cattle breeds was compared by the analysis of DNA polymorphisms. Genomic DNA of Hanwoo or Holstein breeds was digested using 7 restriction endonucleases. BamHI, BglI. EcoRI, HinfIII, MspI PstI, and TagI. All the enzymes produced clear stained bands. The cleavage patterns of all the enzymes were identical between Hanwoo and Holstein breeds. DNA polymotphisms among cattle breeds were also compared by random amplified polymorphic DNAs (RAPD) analysis based on polymerise chain reaction. Less than 10 polymorphic bands were detected. The RAPD patterns were identical among the Holstein, Hereford and Angus breeds, but the above pattern was different from that of Hanwoo. All bands detected in the Hanwoo breed were observed in European cattle breeds, but one of the common bands found in European cattle breeds was not detected in the Hanwoo breed. Tbis band was independent of sex and individuals, and may be useful as a DNA marker for identifying the Hanwoo breed.
유전적 개량 극대화를 위한 유우 및 육우의 이상적인 후대검정두수
전광주(G . J . Jeon),김형철(H . C . Kim),나기준(K . J . Na),조병대(B . D . Cho) 한국축산학회 1995 한국축산학회지 Vol.37 No.3
Optimum number of progeny for given capacities of progeny test size was examined by deterministic models using various levels of heritabilities and population sizes. The theoretical maximum genetic improvement is possible by maximizing the function of selection accuracy, selection intensity, and genetic variation of the traits of interest. To estimate the optimal progeny test breeding schemes. The elements in the function of genetic response are interrelated. And thus, the algorithm used in this study was that the implicit equation was solved iteratively. The results suggested that for an economic trait with heritability of 0.3, given the size of progeny test station with 3,000 breeding females and 33 proven sires to be selected annually, the optimum number of young bulls to be progeny tested was 100 and the number of progeny per bull was 10.
한우와 Charolais 교잡종의 체중에 대한 상가적 및 잡종강세효과의 추정
나기준(K . J . Na),전광주(G . J . Jeon),김형철(H . C . Kim),조병대(B . D . Cho),이근상(K . S . Lee) 한국축산학회 1995 한국축산학회지 Vol.37 No.2
The additive and heterosis effects on body weights between Hanwoo(Korean cattle) and crossbreeds from Charolais x Hanwoo were estimated. The data were recorded from 1979 to 1991 in Kangwha area and were analysed by using linear regression models. The estimated least squares means on body weights of Hanwoo were 85.4±4.6 ㎏ at 3 months of age. 150.2±6.9 ㎏ at 6 months of age and 258.5±11.4 ㎏ at 12 months of age, respectively. The body weights of the crossbreeds ranged from 117.1 to 126.3㎏ at 3 months of age, from 192.0 to 216.8 ㎏ at 6 months of age, and from 352.6 to 383.4 ㎏ at 12 months of age, respectively. The additive effects on body weight were 45.59±6.37 ㎏ at 3 months of age, 78.75±10.13 ㎏ at 6 months of age and 136.27±17.69 ㎏ at 12 months of age. The effects of heterosis were 7.65±3.89 ㎏ at 3 months of age, 21.35±6.09 ㎏ at 6 months of age and 47.47±10.92 ㎏ at 12 months of age, respectively.