http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개체모형에 의한 한우의 성장단계별 체중의 유전모수 추정
최재관,전기준,이창우,나기준,이채영,김종복 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.5
The objective of this study were to investigate the genetic characteristics of body weight by growth pcriods for Hanwoo. A total of 1,736 records were used for body weight. The data for body weights were collected from 1990 to 2000 in Dackwanryon branch, National Livestock Research Institute(NLRI). Estimates of (co)variance components were obtained by derivative-free Restricted Maximum Likelihood (DF-REML). The results are summarized as follows; The means for the weights were 25.60, 79.31, 98.91, 145.40, 283.62, 392.32, 545.65㎏ at birth, 3, 4, 6, 12, 18, 24month postpartum, respectively. The effects of calving year-season were significant for the milk yield of cow. Heritability estimates of direct genetic effects for birth weight were 0.54(all), 0.52(female), 0.36(male) in model Ⅰ, 0.45(all), 0.41(female), 0.24(male) in modelⅡ, and heritabilities estimates of direct genetic effects for 4 month(weaning) weight were 0.47(all), 0.33(female), 0.28(male) in model Ⅰ, 0.38(all), 0.21(female), 0.21(male) in model Ⅱ. Heritability estimates for male and female data differed from those for combined data. The estimates became smaller for the body weights at 12 month or later(0.13~0.05). The heritabilities of average daily gain were smaller than those for body weights, but showed that the similar pattern to body weights.
이창우,최재관,전기준,나기준,이채영,황정미,김병완,김종복 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.5
Weight records of Hanwoo cows from birth to 36 months of age collected in Daekwanryeong branch, National Livestock Research Institute(LNRI) were fitted to Gompertz, von Bertalanffy and Logistic functions. For the growth curve parameters fitted on individual records using Gompertz model, the mean estimates of mature weight(A), growth ratio(b) and growth rate(k) were 383.42±97.29㎏, 2.374±0.340 and 0.0037±0.0012, respectively, and mean estimates of body weight, age and daily gain rate at inflection were 141.05±35.79㎏, 255.63±109.09 day and 0.500±0.123㎏, respectively. For von Bertalanffy model, the mean estimates of A, b and k were 410.47±117.98㎏, 0.575±0.057 and 0.003±0.001, and mean estimates of body weight, age and daily gain at inflection were 121.62±34.94㎏, 211.02±105.53 and 0.504±0.124㎏. For Logistic model, the mean estimates of A, b and k were 347.64±97.29㎏, 6.73±0.34 and 0.006±0.0018, and mean estimates of body weight, age and daily gain at inflection were 173.82±37.25㎏, 324.47±126.85 and 0.508±0.131㎏. Coefficients of variation for the A, b and k parameter estimates were 25.3%, 14.3% and 32.4%, respectively, for Gompertz model, 28.7%, 9.9% and 33.3% for von Bertalanffy model, and 27.9%, 5.0% and 30.0% for Logistic model.
분만년도, 계절 및 산차가 한우의 비유곡선에 미치는 영향
황정미,최재관,전기준,나기준,여인서,양부근,이채영,김종복 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.6
축산기술연구소 대관령지소에서 사육된 한우 암소 118두에 대해 산유량 및 비유곡선을 추정하고자 하였다. 분만 후 1, 2, 3 및 4개월의 일일 평균 산유량은 3.74±0.96㎏, 3.64±0.97㎏, 3.26±1.15㎏ 및 2.99±1.08㎏ 이었으며 4개월간의 일일 평균 산유량은 3.52±0.84㎏이었다. 일반적인 비유곡선의 상수 추정치는 A(분만 직후 첫유량)가 2.4845, b(상향경사도)가 0.1734 및 c(하향경사도)가 0.0060이었다. 최고 추정유량은 3.75㎏이었고 최고 유량 도달시기는 29.03일이었는데 초산우 보다는 경산우가 최고 추정 유량이 높고 최고 유량 도달시기가 늦어지는 것으로 나타났으며 봄철 분만우가 가을철 분만우에 비해 최고 추정 유량이 높고 최고 유량 도달시기가 늦어지는 것으로 나타났으며 봄철 분만우가 가을철 분만우에 비해 최고 추정 유량이 높고 최고 유량 도달시기도 빨라지는 경향을 보였다. This study was conducted to investigate the effect of environmental factor on milk yield and to estimate lactation curve in Korean cattle. The data for milk yields were collected from 118 cows from 1997 to 2000 at National Livestock Research Institute in Daekwanryoung, Kangwon-do. Average daily milk yields for 1st, 2nd, 3rd and 4th month after calving were 3.74㎏, 3.64㎏, 3.26㎏ and 2.99㎏. Average daily milk yield for the four months was 3.52㎏. The milk yields for cows calved in spring were larger than those calved in fall. Lactation curve of Korean cattle was y_n=2.4845n^0.1734e^-0.0060n. Peak milk yield was 3.75㎏ on 29.03 day after calving. The peak milk yields for multi-parous cows were larger than those of primiparous cows. The peak milk yields for multi-parous cows reached later than those for primiparous cows. The cows calved in spring had higher and earlier peak milk yields than those calved in fall had.
이창우,최재관,전기준,나기준,이채영,양부근,김종복 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.4
Growth curves were estimated for 1083 female Korean cattle raised in Daekwanryeong branch, National Livestock Research Institute (NLRI). Comparisons were made among various growth curve models for goodness of fit for the growth of the cows. Estimated growth curve functions were W_(1)=370.2e^(-2.208) for Gompertz model, W_(1)=388.6(1-0.549e ^(0.00261t)^(3) for von Bertalanffy model, and W_(1)=341.2(1+5.652e^(0.00524t)^(-1) for Logistic model. Ages at inflection estimated from Gompertz model, von Bertalanffy model and Logistic model were 242.2 days, 191.5 days, and 330.5 days respectively, body weight at inflection were 136㎏, 115㎏, and 170㎏, and daily gain at inflection were 0.445㎏, 0.451㎏, and 0.446㎏. The predicted weights by ages from Gompertz model, von Bertalanffy model, and Logistic model were consistently overestimated at birth weight and underestimated at 36 month weight. The von Bertalanffy model, which had a variable point of inflection fit the data best.
이창우,최재관,전기준,나기준,이채영,황정미,김종복 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.5
Some growth curve models were used to fit individual growth of 1,083 Hanwoo cows born from 1970 to 2001 in Daekwanryeong branch, National Livestock Research Institute(NLRI). The effects of year-season of birth and age of dam were analyzed. In analysis of variance for growth curve parameters, the effects of birth year-season were significant for mature weight(A), growth ratio(b) and maturing rate(k)(P<.01). The effects of age of dam were significant for growth ratio(b) but not significant for mature weight(A) and maturing rate(k). The linear term of the covariate of age at the final weights was significant for the A(P<.01) and k(P<.01) of Gompertz model, von Bertalanffy model and Logistic model. For the growth curve parameters fitted on individual data using Gompertz model, von Bertalanffy model and LOgistic model, rusulting the linear contrasts(fall-spring), Least square means of A in three nonlinear models were higher cows born all fall and A of Logistic model was significant(P<.05) between the seasons. According to the results of the least square menas of growth curve parameters by age of dam, least square means of mature weight(A) in Gompertz model was largest in 6 year and smallest estimating for 3 and 8 years of age of dam. The growth ratio(b) was largest in 2 year of age of da and smallest estimating in 8 year. The A and k were not different by age of dam(p>.05), On the other hand, the b was different by age of dam.(p<.01). The estimate of A in von Bertalanffy model was largest in 6 year and smallest in 8 and 9 years of age of dam. The b was largest in 2 year and tend to decline as age of dam increased. The A and k were not different by age of dam(p>.05), On the other hand, the b was highly significant by age of dam(p<.01).
유성란,정행진,정기철,이준헌,조규완,최재관,나기준,상병찬 한국동물자원과학회 2003 한국축산학회지 Vol.45 No.6
Cellular FOS(c-fos) protein is a transcription factor that forms heterodimers mostly with c-jun family and stimulates the transcription of genes containing AP-1 regulatory elements. This c-fos expression can control growth and differentiation of various precursor cells including myoblasts. The controls by c-fos gene have been identified for affecting skeletal muscle fiber traits which are the key determinants of meat quality in pigs. As a first step for identifying the relationship between c-fos gene and meat quality traits in cattle, we fully sequenced 1,443 bp of Hanwoo c-fos mRNA and analyzed expression patterns from various organs and muscle tissues. The sequence identities of Hanwoo c-fos with that of human, pig and mouse showed 89.8%, 93.3% and rib muscle from 7 organs and 9 different parts of muscles investigated. These results presented here can be used as a valuable marker for meat quality related traits in cattle with further verification.