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강보석(Bo-Seok Kang),김학규(Hak-Kyu Kim),김종대(Chong-Dae Kim),허강녕(Kang-Nyeong Heo),추효준(Hyo-Jun Choo),황보종(Jong Hwangbo),서옥석(Ok-Suk Suh),홍의철(Eui-Chul Hong) 韓國家禽學會 2012 韓國家禽學會誌 Vol.39 No.1
This study was carried out to investigate the performance of growing period of two-crossbred of Korean Native Chickens. A total of four hundred eighty female 2-crossbred chicks that restored strains and were aboriginal at National Institute of Animal Science. Treatments were four crossbreds (4 replications/crossbred, 30 birds/replication) as A) C strain * S strain, B) C strain * H strain, C) R strain * S strain, and D) L strain * H strain, respectively. Livability of C crossbred was the highest as over 90% and that of B crossbred was the lowest as 73~78% during growing period (P<0.05). Body weight of A crossbred was the highest at the 4 week and that of D strain was the lowest at the 4 and 8 week (P<0.05). Weekly body weight of B and C crossbreds were higher than A and D crossbreds (P<0.05). There was no significant difference among four crossbreds. Weekly feed intake of D crossbred was the highest among all crossbreds at 0~4 weeks (P<0.05). These results suggested the basic data on the record of growing phase of 2-crossbreed Korean Native Chickens.
한국토종닭 3원 교잡종의 부화 및 육성 능력 (pp.399-404)
강보석(Bo-Seok Kang),홍의철(Eui-Chul Hong),김학규(Hak-Kyu Kim),유동조(Dong-Jo Yu),박미나(Mi-Na Park),서보영(Bo-Young Seo),추효준(Hyo-Jun Choo),나승환(Seung-Hwan Na),서옥석(Ok-Suk Seo),황보종(Jong Hwang bo) 韓國家禽學會 2010 韓國家禽學會誌 Vol.37 No.4
본 시험은 한국토종닭 3원 교잡종의 부화 및 육성 능력을 보고자 수행하였다. 공시계는 국립축산과학원에서 생산된 종란을 인수하여 부화시킨 3원 교잡종 병아리 암컷이다. 4가지 교배 조합으로 생산된 360수의 암평아리들을 3반복으로 반복당 30수씩 완전 임의배치하였다. 4개의 교배 조합은 A) 토착겸용종 C계통×재래종 Y계통×토착겸용종 C계통, B) 토착겸용종 C계통×재래종 L계통×토착겸용종 C계통, C) 토착 겸용종 C계통×재래종 G계통×토착겸용종 C계통, D) 토착겸 용종 C계통×재래종 W계통×토착겸용종 C계통이다. 수정률은 A, B, C 및 D에서 각각 89.8, 91.2, 92.4 및 92.8%였으며, 부화율은 각 계통에서 69.8, 70.7, 75.5 및 77.4%였다. 육성률은 계통간 유의적인 차이가 없었다(P>0.05). 20주령 체중은 B계통에서 높게 나타났으며(P<0.05), 0~20주령까지의 사료 요구율은 4계통에서 유의적인 차이는 없었다(P>0.05). 이런 결과들은 한국토종닭 3원 교잡종의 부화 및 육성 성적에 대한 기초적인 자료로서 이용될 것이라 사료된다. This work was conducted to evaluate the hatching and growing performance of Korean native chicken (KNC) 3 strains crossbred. A total of 360 female pullets were produced from CY × C (A), CL × C (B), CG × C (C) and CW × C (D) crossbred kept in National Institute of Animal Science, Korea. Hatchability of A, B, C and D were 69.8, 70.7, 75.5 and 77.4%, respectively. Livability were not significantly different by 20 weeks among 4 strains. Body weight B was high compared to other strains at 20 weeks. The feed conversion ratio of 4 strains was no significantly different among strains at 20 weeks. These results suggested the basic data that needed to develope the new strains.
토종 실용계 생산용 2원 교배종 종계의 산란 능력 검정
강보석(Bo-Seok Kang),추효준(Hyo-Jun Choo),김학규(Hak-Kyu Kim),김종대(Chong-Dae Kim),허강녕(Kang-Nyeong Heo),황보종(Jong Hwangbo),서옥석(Ok-Suk Suh),최희철(Hee-Cheol Choi),홍의철(Eui-Chul Hong) 韓國家禽學會 2012 韓國家禽學會誌 Vol.39 No.2
This study was carried out to investigate the performance of laying period of two-way crossbred of Korean native chickens. A total of four hundred eighty female 2-crossbred chicks that restored strains and were aboriginal at National Institute of Animal Science. Treatments were four crossbreds (4 replications/crossbred, 30 birds/replication) as A) C strain × S strain, B) C strain × H strain, C) R strain × S strain, and D) L strain × H strain, respectively. There were no significant difference on age, egg weight, and body weight at first egg among crossbreds (P>0.05). Body weight of D crossbred was lower compared to other crossbreds at the age of 24, 32, 40 and 60 week (P<0.05). Feed intake of A crossbred was highest among crossbreds (P<0.05). Weekly egg weight of A crossbred was the highest among crossbreds all laying period except 48~52 and 60~64 weeks. Hen-house egg production of A and B crossbreds was higher than that of C and D crossbreds (P<0.05). Hen-day egg production decreased after at the age of 36 weeks. Weekly egg production of A and B crossbreds was higher compared to C and D crossbreds (P<0.05). These results suggested the basic data on the record of laying period of 2- crossbreed Korean Native Chickens.
토종닭과 실용계에서 TYR 및 MC1R 유전자의 변이 분석
허강녕(Kang Nyeong Heo),추효준(Hyo Jun Choo),서보영(Bo Young Seo),박미나(Mi Na Park),정기철(Kie Chul Jung),황보종(Jong Hwangbo),김학규(Hak Kyu Kim),홍의철(Eui Chul Hong),서옥석(Ok Suk Seo),강보석(Bo Seok Kang) 충남대학교 농업과학연구소 2011 농업과학연구 Vol.38 No.3
The commercial Korean native chickens (WR_CC) was developed by crossing a few native chicken breeds in Korea. In order to investigate the breed identification markers, SNPs from TYR gene and MC1R gene, which are associated with skin and feather colors respectively, were initially identified. In case of 3 identified SNPs in the TYR gene, yellow shank color was identified in Loss, Harvard, AA, RIR and CC, which have the fixed SNPs in most of the animals. On the other hand, SNP variations were observed in KNC_RB, C_B, WR_CC and HH_CC, which have the black, yellow and mixed color with black and yellow shank colors. Also, the investigation of 3 SNPs in the MC1R gene indicated that there were associations between shank and feather colors in RIR, SF, KNC_B, C_B and RIR. However, these results are not consistent among breeds. These SNP type inconsistencies within breeds suggested that the selection was performed based on the phenotypes, which is not include the genotype information. Thus, selection based on genetic information is required in the future.
토종닭과 실용계에서 TYR 및 MC1R 유전자의 변이 분석
허강녕(Kang Nyeong Heo),추효준(Hyo Jun Choo),서보영(Bo Young Seo),박미나(Mi Na Park),정기철(Kie Chul Jung),황보종(Jong Hwangbo),김학규(Hak Kyu Kim),홍의철(Eui Chul Hong),서옥석(Ok Suk Seo),강보석(Bo Seok Kang) 충남대학교 농업과학연구소 2011 Korean Journal of Agricultural Science Vol.38 No.3
The commercial Korean native chickens (WR_CC) was developed by crossing a few native chicken breeds in Korea. In order to investigate the breed identification markers, SNPs from TYR gene and MC1R gene, which are associated with skin and feather colors respectively, were initially identified. In case of 3 identified SNPs in the TYR gene, yellow shank color was identified in Loss, Harvard, AA, RIR and CC, which have the fixed SNPs in most of the animals. On the other hand, SNP variations were observed in KNC_RB, C_B, WR_CC and HH_CC, which have the black, yellow and mixed color with black and yellow shank colors. Also, the investigation of 3 SNPs in the MC1R gene indicated that there were associations between shank and feather colors in RIR, SF, KNC_B, C_B and RIR. However, these results are not consistent among breeds. These SNP type inconsistencies within breeds suggested that the selection was performed based on the phenotypes, which is not include the genotype information. Thus, selection based on genetic information is required in the future.
김학규(Hak-Kyu Kim),강보석(Bo-Seok Kang),황보종(Jong Hwangbo),김종대(Chong-Dae Kim),허강녕(Kang-Nyeong Heo),추효준(Hyo-Jun Choo),박대성(Dae-Sung Park),서옥석(Ok-Suk Suh),홍의철(Eui-Chul Hong) 韓國家禽學會 2012 韓國家禽學會誌 Vol.39 No.1
This study was carried out to investigate the growth performance and the carcass ratio of meat-type Korean Native Ducks. Four hundred twenty Korean Native Ducks' chicks were selected and divided into four treatments (7 replications/ treatment, 15 birds/replication) by strains (A and B) and gender(male and female) with 2*2 fractal factors. There was no significant difference between A and B on the body weight at 2, 4, 6, and 8 weeks old (P>0.05). However, body weight of female was higher at 2 weeks old than male while that of male was higher at the 8 weeks old (P<0.01). Daily feed intake of male was higher compared to female during 6~8 weeks (P<0.05). On weekly body weight gain, there was no significant difference between strains, but gained body weight of male was higher until 2 weeks old while that of female was higher during 6~8 weeks (P<0.01). On the live body weight and carcass weight by strains and genders, B strain was higher than A strains at the 8 weeks of age (P<0.01). Carcass yield was the highest at 8 weeks of age in both strains (P<0.05). These results may provided the basic data on growth performance and carcass ratio of meat-type Korean Native Ducks.
토종오리의 교배 조합이 오리고기의 부분육 생산수율, 육질 및 관능검사에 미치는 영향
김학규(Hak-Kyu Kim),홍의철(Eui-Chul Hong),강보석(Bo-Seok Kang),박미나(Mi-Na Park),채현석(Hyun-Seok Chae),방한태(Han-Tae Bang),서보영(Bo-Young Seo),추효준(Hyo-Jun Choo),나승환(Seung-Hwan Na),서옥석(Ok-Suk Seo),황보종(Jong Hwangbo) 韓國家禽學會 2010 韓國家禽學會誌 Vol.37 No.4
본 시험은 토종오리와 육용오리의 교배 조합이 부분육 비율과 육질에 미치는 영향을 연구하기 위해 수행하였다. 토종오리와 육용오리의 교배 조합으로 발생된 4처리구의 오리 360수를 평사에서 사육하고, 일정 주령(A, B, C 8주령, D 6주령)에 도달하였을 때 각 처리구에서 암수 각각 9수씩 선별하였다. 교배 조합 방법은 토종오리(♀)×토종오리(♂), 육용오리(♀)×토종오리(♂), 토종오리(♀)×육용오리(♂), 육용오리(♀)×육용오리(♂)의 4처리구를 각각 A, B, C, D로 하였다. 선별된 개체들은 도압(屠鴨)하여 부분육 비율을 측정하고, 오리고기의 이화학적 성상과 관능검사를 실시하였다. 날개와 목 부위의 비율은 D 처리구가 가장 낮았으며(P<0.05), 가슴 부위는 B 처리구에서 가장 높았다(P<0.05). 다리 부위는 처리구간 차이가 없었으며, 부분육을 제외한 부위는 A, B, D 처리구에서 C 처리구에 비해 유의적으로 높았다(P<0.05). 오리고기의 pH는 처리구간 차이가 없었으나(P>0.05), 지방, 단백질 함량은 B 처리구가 가장 높았으며(P<0.05), 콜라겐 함량은 D 처리구가 가장 높았다(P<0.05). 오리고기의 육색과 물리학적 성상(전단력, 가열 감량, 보수력)은 처리구간 차이가 없었다(P>0.05). 오리고기의 관능검사는 다즙성에서 D 처리구가 가장 높았으나(P<0.05), B와 D 처리구 사이에는 유의적 차이가 없었다. 따라서 토종오리와 육용오리의 교배 조합은 이화학적 성상이나 관능검사의 개선 효과가 뚜렷하지 않지만 가슴육 수율 향상에 영향을 주는 것으로 사료된다. This work was carried out to investigate on the retail cut yield and the meat quality of crossbred ducks. A total of 360 pullets that were produced from 4 mating methods used in this work. Four mating method were A) native ducks (♀) × native ducks (♂), B) meat-type ducks (♀) × native ducks (♂), C) native ducks (♀) × meat-type ducks (♂), and D) meat-type ducks (♀) × meat-type ducks (♂). Ducks were bred at the flat house, and selected nine ducks with similar weights from each treatment at the certain weeks (A, B, C 8 weeks; D 6 weeks). Selected ducks were slaughtered, calculated the retail cut yield(wing, back, neck, breast, leg), analyzed the physico-chemical compositions, and tested the sensory evaluation. Wing and neck meat ratios of D treatment were lowest (P<0.05), and breast meat ratio of B treatment was high (P<0.05) compared to other treatments. pH of duck meat was no difference among treatments, fat and protein contents of B treatment was highest, and collagen contents of D treatment was highest among all treatments. Meat color and physical compositions was no difference among treatments. Juiciness of D treatment meats was highest, and there was no difference between B and D treatments. Finally, mating method of native duck and meat-type duck affected on the retail cut yield, but did not improve on the physico-chemical compositions and sensory evaluation.
박미나(Mi-Na Park),홍의철(Eui-Chul Hong),강보석(Bo-Seok Kang),김학규(Hak-Kyu Kim),김재홍(Jae-Hong Kim),나승환(Seung-Hwan Na),채현석(Hyun-Seok Chae),서옥석(Ok-Suk Seo),한재용(Jae-Yong Han),정재홍(Jae-Hong Jeong),황보종(Jong Hwangbo) 韓國家禽學會 2010 韓國家禽學會誌 Vol.37 No.4
본 시험은 토종닭의 교배 조합이 계육의 이화학적 성상 및 육질에 미치는 영향을 조사하기 위하여 수행되었다. 공시계는 국립축산과학원에서 토종닭(적갈색, 흑색)과 육용계의 교배 조합으로 발생된 4계통의 병아리 수컷을 A, B, C, D계통으로 구분하여 이용하였다. 각 계통에서 90수씩 선별하여 12주령까지 준육용계 사료를 이용하여 평사에서 사육하고, 일정 주령(5주, 10주)에 도달하였을 때 각 계통에서 27수씩 선별하여 개체별 생체중을 측정하고, diethyl ether로 마취시킨 후 도계하여 시험에 이용하였다. 도계된 닭들은 부분육(가슴, 다리)의 무게를 측정하고, 비율을 산출한 후 이화학적 성상과 관능검사를 실시하였다. 계육의 물리적 성상은 5주령에는 모든 항목에서 계통 간에 차이가 없었으나, 10주령에는 B계통이 명도, 가열 감량 및 보수력에서 다른 계통에 비해 차이가 있었다(P<0.05). 화학적 성상에서는 5주령에 B계통이 다른 계통에 비해 pH, 수분 함량 및 콜라겐 함량이 낮았으며, 단백질과 지방 함량이 높았다. 회분 함량은 계통 간에 차이가 없었다. 10주령에는 A계통이 회분과 콜라겐 함량이 가장 낮았으며(P<0.05), 그 외 항목은 계통 간에 차이가 없었다(P>0.05). 관능검사 결과에서, 5주령에서 D계통이 다즙성에서 가장 높았고, 10주령에서 B계통이 연도에서 가장 낮게 나타났다(P<0.05). 따라서, 토종닭의 교배 조합은 계육의 물리적 성상에는 크게 영향이 없지만, 5주령에서 화학적 성상에 영향을 미치며, 특히, 수분과 지방 함량은 다즙성과 연도와 관련이 있다고 추정된다. This work was carried out to investigate chemical composition and meat quality of crossbred Korean native chickens (KNC). Ninety 1-d male chicks were used in this work and were divided into 4 groups as A: (KNC egg-meat type C strains × KNC meat type S strains) (♀) × KNC meat type H strains (♂), B: (KNC egg-meat type C strains × KNC meat type H strains) (♀) × KNC meat type S strains (♂), C: (KNC native R strains × KNC meat type S strains) (♀) × KNC meat type H strains (♂), D: (KNC native L strains × KNC meat type H strains) (♀) × Ross broiler (♂) strains. They were fed the broiler diets for 12 weeks at the flat house and twenty seven chickens were slaughtered at week 5 and 10. Chicken thigh and breast were weighed and physicochemical compositions and sensory characteristics were investigated. Physical compositions of meats have no difference among strains at 5 week, and B strains differed from other strains at 10 week (P<0.05). The pH, moisture, and collagen content of meat from B strains were lower than other strains at 5 week. Ash and collagen of A strains were the lowest at 10 week (P<0.05), but others have no difference among strains. In sensory test, juiciness of D strains was the highest at 5 week, and tenderness of B strains was the lowest at 10 week (P<0.05). In conclusion, the crossbreeding of KNC did not affect physical traits but affected chemical composition of the chicken meat slaughtered at 5 week.