자돈체중간의 상관에 관한 연구

김철욱,정현승,김윤환 ( Chul Wook Kim,Hyun Sung Chung,Youn Hwan Kim ) 자 한국축산학회 1986 한국축산학회지 Vol.28 No.8

This study was conducted to estimate the correlation coefficient between pig weights by breeze, parity, furrowing season, duration of pregnancy and sea on the basis of the data obtained from total 2.498 pigs of Landrace, Berkshire and Yorkshire born from 1982 to 1983 at the livestock station, Gyeongsang Nam-do. The data were analyzed by the SPSS package program(Nie, 1975) and Miller`s method C 1983) and the results obtained were as follows: In correlation coefficients between pig weights by breed, the correlation coefficients between pig weight, at birth(PWB) and pig weight at 21 days(PW21) in Berkshire were significantly (p$lt;.05) higher than these in Yorkshire and PW21 in Berkshire seemed to increase more as PWB was heavier. though the correlation coefficient between PW21 and Pig weight at 56days(PW56) was not significantly different (P$lt;.05) between breeds, PW21 was more correlated with PW56 than PWB. In correlation coefficients between pig weighte by parity, the correlation coefficient between P1V13 and PW21 was significant different (p$lt;.05) between 7th parity and 1, 4, 5, and 8th parity groups, specially the correlation coefficient between PWB and PW21 in the 7th parity group was .5118, and there was the high correlation between PWB and PW21. The correlation coefficient between PW21 and PW56 was high in the other groups except the first parity and PW56 in parity seemed to increase more as PW21 was heavier. In correlation coefficients between pig weights by furrowing season, though the correlation coefficients between PWB and PW21 and PW56 were nonsignificant differences (p$lt;.051), the correlation coefficient between PW21 and PW56 was significantly (p$lt;.05) higher in the fall and winter-born groups than in the spring and summer born groups. In correlation coefficients between pig weights by duration of pregnancy, the correlation coefficient between PWB and PW21 was significantly different (p$lt;.05) between the 110 days group and the 111 days group and was not significant (p$lt;.05) between the other groups. The correlation coefficient between PWB and PW56 was significantly (p$lt;.05) higher with .6840 and .5935 in the 111 days and 119 days groups than in the other groups, and the correlation coefficient between PW21 and PW56 was significant differences (p$lt;.05) between the 112 days group and the 110 days groups. The correlation coefficient in the 112 days group was the highest with .7275. In correlation coefficients between pig weights by sex, the correlation coefficients between PWB and PW21 and PW56 were significantly (p$lt;.05) higher in the male group than in the female group. Specially, PW21 was more correlated with PW56 than PWB. From the results summarized as above, it could be inferred that PWB be more correlated with PW21 than PW56, and PW56 seem to increase more as PW21 was heavier because there was the more correlation between PW21 and PW56.

농업정책의 의사결정을 위한 계층분석과정의 적용

김철욱(Chul-Wook Kim),김태완(Tae-Wan Kim) 한국농식품정책학회 2011 농업경영정책연구 Vol.38 No.4

This study is to investigate a priority of regional agricultural policy by using the Analytic Hierarchy Process (AHP) as analytical tool. AHP is able to select the best alternative among the proposed alternatives by identifying the importance of each element which is classified many hierarchical decision-elements. Result of analysis, Ulsan Province s agricultural experts evaluated very importantly pear and Korean cattle as main items. And results of overall valuation which is synthesized the weight of each agrolivestock products and regional agricultural characterized type, the production policy of a high quality and safe agricultural products was evaluated the most importantly. Thus, the pear and Korean cattle must get to be developed strategically, but the quality and safety of agro-livestock products should be considered as the most important regional agricultural policy.

산청지역 농작물의 성장잠재력 분석

김철욱 ( Chul-wook Kim ),김태완 ( Tae-wan Kim ) 한국농업정책학회 2011 농업경영정책연구 Vol.38 No.4

The purpose of this study is to select the agricultural products with the possibility of growth, contributing to economic growth in Sancheong. For this, we carried out location quotient (LQ) and regional growth rate differential analysis. The LQ analysis, based on cultivated area and agricultural output in 2007, showed that strawberry is the highest and dried persimmon is high. Thus, the strawberry and dried persimmon are necessary to develop the critical regional agricultural products. As results of regional growth rate differential analysis based on cultivated area and agricultural output from 1995 to 2007, strawberries, dried persimmon, sweet persimmon, potatoes, sweet potato, pears, onion and watermelon are classified as growing agricultural products currently or agricultural products with growth potential. Therefore, for the regional agricultural development, these agricultural products should be intensively developed in Sancheong.

성장률시차분석에 의한 경남지역 약용작물의 성장가능성 분석

김태완(Tae Wan Kim),김철욱(Chul Wook Kim),김일석(Il Suck Kim),김삼웅(Sam Woong Kim),이신우(Shin Woo Lee) 한국농식품정책학회 2017 농업경영정책연구 Vol.44 No.1

Recently, consumers are pursuing the consumption of health-oriented medicinal crops as their per capita income is increased. This change in consumption trends has led to the growing of total production in more medicinal crops. Therefore, we analysed the growth potentiality of medicinal crops cultivated in Gyeongnam province using location quotient analysis (LQA) and regional growth rate differential analysis(RGRDA). LQA showed that Chinese lovage(Angelica tenuissima nakai), Liriope tube(Liriope platyphylla Wang et Tang), Lizard’s tail(Asarum maculatum Nakai), Chinese magnolia fruit(Schizandra chinensis Baill), and Safflower(Carthamus tinctorius) cultivated in Gyeongnam province, exhibited the highest location quotient value compare to the other provinces in South Korea. Also, RGRDA indicated that the medicinal crops classified as growing crops were Barbary wolfberry fruit(Lyclum chinensis Mill), Korean blackberry(Rubus coreanus Miq.), Gyeolmyeongja(Senna tora) and Safflower(Carthamus tinctorius) in Gyeongnam province. Therefore, it suggests the establishment of systematic policy alternatives to continuously cultivate and distribute these medicinal crops with competitive advantage.

복합미생물제제 급여가 비육돈사의 환경개선에 미치는 영향

김태완,김철욱,김두환,Kim, Tae-Wan,Kim, Chul-Wook,Kim, Doo-Hwan 한국축산환경학회 2007 축산시설환경학회지 Vol.13 No.3

본 연구에서는 납두균, 유산균, 효모균 등 5종의 복합미생물에 활성탄 및 쑥분말을 첨가한 복합미생물제제를 비육돈 사료에 첨가하여 급여한 후, 돈사내 유해가스 농도 변화를 조사하였다. 암모니아 농도는 밀폐형 돈사의 급여 초기에는 큰 변화가 없었지만, 급여후 넷째 주부터는 복합미생물제제를 0.1% 첨가한 처리구에서 농도가 떨어져서 시험 종료일 기준으로 대조구에 비해 처리구의 농도가 약 36% 감소되었다. 황화수소 농도는 복합미생물제제를 급여하지 않은 대조구에서는 큰 변화 없이 일정 수준을 유지하고 있으나, 복합미생물제제 급여구는 급여 후 3주째부터 대조구에 비해 상대적으로 낮은 농도를 보이고 있으며, 종료시점에서 대조구에 비해 약 14%정도 낮은 것으로 조사되었다. 비육돈사의 슬러리에서 측정한 pH는 복합미생물제제를 급여한 처리구와 비급여 대조구 사이에 큰 차이가 없으나, 처리구에서 시간이 지남에 따라 알칼리성으로 변화하였고, 총질소 함량은 대조구에 비해 처리구에서 절반 수준으로 줄어들었다. 암모니아성질소는 복합미생물제제 급여구에서 급격히 줄어듦으로써 돈사내 악취발생 감소에 기여하고 있음을 알 수 있으며, 총인 함량도 크게 감소되어 분뇨의 액비화 등으로 인한 환경오염문제 해소에도 기여할 것으로 판단된다. 이러한 비육돈에 대한 복합미생물제제의 급여 효과를 극대화하기 위해서는, 양돈장의 유해가스 및 악취 저감 효과가 가축의 건강상태, 생산단계, 분뇨관리, 환기 및 온 습도, 기압, 첨가제 상태 등 다양한 요인에 따라 달라질 수 있으므로, 철저한 사육환경관리가 선행되어야 할 것이다. This study was carried out to investigate the effect of microbial complex diets on improvement of air quality in finishing pig building. Ammonia and hydrogen sulfide concentrations were significantly(p<0.05) decreased by dietary supplementation of 0.1% level of microbial complex compared with those of control according to the time in the finishing pig building. Characteristics of piggery liquid slurry that total nitrogen and $NH_3-N$ of treatment were reduced relatively compared with those of control, and were decreased depending on the time. In conclusion, the result obtained from this study suggest that the dietary supplementation of microbial complex for finishing pigs may improve environment in the finishing pig building.

축산물 및 가공 : 인진쑥 급여가 성별에 따른 육성-비육기 돈육의 도체 및 육질특성에 미치는 영향

김일석 ( Il Suk Kim ),진상근 ( Sang Keun Jin ),송영민 ( Young Min Song ),김철욱 ( Chul Wook Kim ),조광근 ( Kwang Keun Jo ),정기화 ( Ki Hwa Chung ),강석남 ( Suk Nam Kang ) 한국동물자원과학회 ( 구 한국축산학회 ) 2008 한국축산학회지 Vol.50 No.6

홀스타인의 유량 , 유지율 및 유지량에 대한 유전 및 환경적 효과와 상호작용에 관한 연구

문점동,강봉태,김윤환,김철욱 ( Jeom Dong Moon,Bong Tae Kang,Youn Hwan Kim,Chul Wook Kim ) 한국축산학회 1983 한국축산학회지 Vol.25 No.5

This study was conducted to determine the main effects and interactions of parity, performance of milk production, season and lactation period on the daily average milk yield, the daily average fat percentage and the daily average fat yield in Holstein cows with the records of 953 of observation obtained at breeding livestock station, Gyeong Sang Nam Do from 1979 to 1981. The records were analysized by the least square method and the results obtained are summarized as follows: 1. The daily average milk yield and fat percentage of the 5-6th parity and the daily average fat wield of the 3-4th parity were significantly superior to those of the other groups. 2. The daily average milk yield and fat yield of 5100㎏ group, and daily average fat percentage of 4500㎏ and low group were highly superior to those of the other groups in the effect of performance of milk production. 3. The daily average milk yield, fat percentage and fat yield of Summer, Fall and Winter were higher than those of Spring in the effects of season and there were no significant (P$gt;.05) differences among Summer, Fall and Winter. 4. The daily average milk yield of 270 days and low was 17.34±.30㎏ and the daily average milk percentage of 270-310 days was 3.91±.03%, these were greatly superior to those of the other group in the effects of lactation period. 5. The interaction effects of performance of milk productionxseason and lactation period were highly significant (P$lt;.001) for the dally average milk yield and fat yield. 6. The effect of parity×performance of milk production was significant (P$lt;.001) and the effect of parity×lactation period was significant (P$lt;.05) for the daily average fat percentage.

유전 및 육종 : 버크셔종의 육질형질에 대한 유전모수 추정

정종현 ( Jong Hyun Jung ),김철욱 ( Chul Wook Kim ),박범영 ( Beom Young Park ),최종순 ( Jong Soon Choi ),박화춘 ( Hwa Chun Park ) 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.4

본 연구는 2004년~2008년에 미국에서 도입한 버크셔종의 육질형질에 대한 유전적 특성을 파악하고, 향후 선발에 이용한 유전적 그룹(genetic group)을 분리하여 선발 및 교배계획을 체계적으로 세워 효과를 극대화시키는 전략을 세우고자 수행하였다. 그 결과 사후 대사율의 척도인 근육의 사후 45분 pH, 24시간 pH에 대한 유전력은 각각 0.60과 0.61로 높게 조사되었다. 육색의 척도인 명도, 적색도 및 황색도의 유전력은 0.56, 0.58 및 0.62로 조사되었다. 근내지방도, 유리육즙량과 가열감량에 대한 유전력은 각각 0.57, 0.51 및 0.66으로 조사되었다. 본 연구 결과로 미루어 볼 때 육질형질의 개량에 있어 육종가를 기초로 하여 선발에 활용할 경우 유전적 개량량은 크게 나타날 것으로 사료된다. 또한 사후 대사율의 척도인 pH와 육질형질과의 상관도는 높은 연관성이 존재하므로, 종돈장에서 육질형질을 개량하고자 한다면 육종가를 기반으로 한 선발지수(selection index)를 활용하면 매우 효과적일 것으로 필자는 사료된다. 그러나 본 연구에 활용된 자료는 유전모수를 추정하는데 다소 부족한 것은 사실이지만 국내 최초로 돼지의 육질형질에 대한 유전모수를 추정하는데 있어 매우 의미가 있다고 할 수 있다. Swine industry in Korea plays an important role in providing the meat for domestic consumption, and the number of pigs in Korea was about 9.72 million heads as of June, 2010. Meat quality is used to describe any traits which impact the consumer acceptability of fresh meat products. Meat color, firmness, water holding capacity, ultimate muscle pH24h(measured 24 hours post-mortem), shear force, and intramuscular fat percentage(IMF) are generally accepted as important indicators of meat quality and ultimately, consumer acceptance of fresh pork. The objective of this study was to estimate genetic parameters for meat quality traits in Berkshire pigs. The heritability estimates for muscle pH24h, lightness(CIE L*), NPPC marbling were 0.61, 0.56 and 0.57, respectively, The heritability estimates for drip loss, cooking loss, shear force were 0.51, 0.66 and 0.56, respectively. The phenotypic correlations between pH24h and lightness(CIE L*), drip loss, cooking loss were negative, ranging from -.45~-.13. The genetic correlations between muscle pH24h and lightness(CIE L*), drip loss were negative, ranging from -.35~-.32. Genetic parameters obtained herein indicate that genetic improvement of muscle pH24h is not related to the NPPC marbling of meat, but rather to improved lightness(CIE L*) and drip loss. Genetic trends of meat quality traits showed increased muscle pH24h and decreased cooking loss and drip loss.

산머루주 박 급여가 버크셔종의 등심 품질특성에 미치는 영향

김태완 ( Tae Wan Kim ),김철욱 ( Chul Wook Kim ),김일석 ( Il Suk Kim ) 한국동물자원과학회 2008 한국축산학회지 Vol.50 No.2

연구 보문 : 계층분석과정(AHP)에 의한 지역농업정책의 우선순위 결정: 창녕지역을 중심으로

김태완 ( Tae Wan Kim ),김철욱 ( Chul Wook Kim ),강양수 ( Yang Su Kang ) 한국국제농업개발학회 2010 韓國國際農業開發學會誌 Vol.22 No.1