• Asian-Australasian Journal of Animal Sciences
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• 제26권2호
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• pp.157-162
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• 2013

The use of Korean native chicken is increasing, and the discovery of new genetic resources is very important from both economic and genetic conservation points of view. In this study, mtDNA D-loop sequences from 272 privately-owned Korean native chickens from a Hyunin farm were investigated. Seventeen nucleotide substitutions were identified from the sequence analysis and they were classified as 6 haplotypes. Previously investigated haplotypes in five Korean native chicken populations have been compared with the Hyunin chicken population. The results indicated that two haplotypes, H10 and H15, in the Hyunin chicken population were not previously identified in other Korean native chicken populations, representing 33.09% (90/272) and 1.1% (3/272) of the Hyunin population, respectively. On the other hand, four other haplotypes were identical to those of a previous study of Korean native chicken populations. This result is indicative of conservation strategies of Hyunin chicken populations for expanding the genetic diversity in the Korean native chicken population.

• 한국가금학회지
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• 제22권3호
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• pp.167-178
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• 1995

The purpose of this research was to get basic information for the development of Korean native chicken industry by reviewing the current native chicken farm management and marketing situation of native chicken products(meat and eggs). The research was carried on the basis of the farm field survey covering 210 native chicken feeders out of 9 different local areas, and the results were as follows ; 1. Average raising size of native chicken flocks of sample farms was 1,787 heads and about 50% of those farms raised less than 500 heads chickens for self-sufficiency or on the side. 2. Most farmers made the decision to start on feeding native chickens in small scale with small amount of capital without sound feeding program, and their decision was mainly influenced by recommendation of mass-media( 19.5%) and neighbors (17.2%). 3. The average income per farm earned by raising the native chickens was 13,719 Won, and income per head of chicken was 8,800 Won. 4. About 40% of feeders expressed that the poor marketing management and lack of capital were the bottleneck to native chicken farm management. 5. About 70% of feeders evaluated the prospect of native chicken industry positively and so, about 60% of feeders hoped to expand the raising size in the future. 6. Most farmers directry made a bargain with marketer including middleman and enduser in selling the chicken products because there was not established special marketing system for native chicken products. 7. The sales age of native broiler was about 16~20 weeks and average body weight of broiler was 1.5~2.0 kg. And farm recieved price was not decided on the basis of each body weight or meat quality but only number of heads. 8. The average first egg-laying age of chickens was about 165 days and average annual laying rate was only about 56%. 9. In order to develop the successful Korean native chicken industry, followings are recommended ; 1) Reducing the production costs and increasing the productivity of native chickens should be carried out through technological research and development for sound feeding program of native chickens and sufficient fund supply. 2) Orderly native chicken marketing and pricing system should be established to give good vision about native chickens to farmers and to delight the consumers. 3) The measures for product differentiation including meat quality and nutritional value of native chicken products against other improved chickens should be actively taken by feeders and government.

• 한국가금학회지
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• 제45권1호
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• pp.41-51
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• 2018

Recently, the Korean government has been trying to conserve the genetic resources of native chicken. Although the production aspect is important, consumers should also value the native chicken in order for this market to grow. As certification systems are used to inform consumers about the value of a product, this study aims to investigate certification systems for chicken in France. Two regions were selected: Alsace and Bresse. We conducted a value-chain analysis of activities related to native chicken in each of these two regions, including hatching, breeding, slaughtering and processing, distributing, and marketing activities. We found that various certification systems were used not only to inform consumers about the value of the native chicken but also to protect biodiversity. Also, geographical indication, one kind of certification system, was utilized to establish higher quality based on the characteristics of each region. Implications pertinent to a domestic certification system for Korean native chickens were suggested.

• Asian-Australasian Journal of Animal Sciences
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• 제19권11호
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• pp.1546-1550
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• 2006

The purpose of this study was to assess the genetic variation and establish the relationship amongst breeds and strains using 15 chicken specific microsatellite markers. A total of 285 unrelated DNA samples from four Korean native chicken strains (Black strain of Korean native chicken; KL, Red Brown strain of Korean native chicken; KR, Ogol strain of Korean native chicken; KS and Yellow Brown strain of Korean native chicken; KY) and three introduced chicken breeds (F strain of White Leghorn; LF, K strain of White Leghorn; LK, Rhode Island Red; RC and Cornish; CN) were genotyped to estimate within and between breed genetic diversity indices. All the loci analyzed in 15 microsatellite markers showed a polymorphic pattern and the number of alleles ranged from 5 to 14. The polymorphism information content (PIC) of UMA1019 was the highest (0.872) and that of ADL0234 was the lowest (0.562). The expected total heterozygosity (He) within breed and mean number of observed alleles ranged from 0.540 (LF) to 0.689 (KY), and from 3.47 (LK) to 6.07 (KR), respectively. The genetic variation of KR and KY were the highest and the lowest within Korean native strains, respectively. The genetic distance results showed that Korean native chicken strains were separated with the three introduced chicken breeds clustered into another group. The lowest distance (0.149) was observed between the KR and KL breeds and the highest distance (0.855) between the KR and LK breeds. The microsatellite polymorphism data were shown to be useful for assessing the genetic relationship between Korean native strains and other foreign breeds.

• 한국가금학회지
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• 제23권1호
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• pp.19-26
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• 1996

본 연구는 한국 재래계의 난질 개량을 위한 기초자료를 얻고자 수행하였으며, 그 결과는 다음과 같다. 1. 재래계는 개량계(Decalb Brown)에 비하여 난중, 난황중, 농후난백중, 수양난백중, 난각중 등이 가벼웠으나(P＜0.01), 난중비는 차이가 없었다(P＞0.05). 2. 재래계는 개량계에 비하여 난각 형질에서 변이계수가 낮았으며, 이는 환경 적응성이 재래계에서 높음을 시사해 주고 있다. 3. 재래계와 개량계 공히 난중, 난황중, 농후난백중, 수양난백중, 그리고 난각중 간의 표현상관이 높았고(P＜0.01), 특히 재래계에서 0.842~0.992 로 높아서, 난중 개량에 의한 간접 선발의 효과가 클 것으로 기대되었다. 4. 난각두께에서 재래계와 개량계가 각각 362.5와 407.9 $\mu\textrm{m}$ 로서 차이가 있었다(P<0.01). 5. 재래계는 개량계에 비하여 난의 각 형질에서 회귀계수가 공히 낮게 나타나서 난중개량과 동시에 난각 형질의 개량이 요구되었다.

• 한국축산식품학회지
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• 제37권3호
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• pp.469-476
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• 2017

This study analyzed consumers' preferences and price sensitivity to native chickens. A survey was conducted from Jan 6 to 17, 2014, and data were collected from consumers (n=500) living in Korea. Statistical analyses evaluated the consumption patterns of native chickens, preference marketing for native chicken breeds which will be newly developed, and price sensitivity measurement (PSM). Of the subjects who preferred broilers, 24.3% do not purchase native chickens because of the dryness and tough texture, while those who preferred native chickens liked their chewy texture (38.2%). Of the total subjects, 38.2% preferred fried native chickens (38.2%) for processed food, 38.4% preferred direct sales for native chicken distribution, 51.0% preferred native chickens to be slaughtered in specialty stores, and 32.4% wanted easy access to native chickens. Additionally, the price stress range (PSR) was 50 won and the point of marginal cheapness (PMC) and point of marginal expensiveness (PME) were 6,980 won and 12,300 won, respectively. Evaluation of the segmentation market revealed that consumers who prefer broiler to native chicken breeds were more sensitive to the chicken price. To accelerate the consumption of newly developed native chicken meat, it is necessary to develop a texture that each consumer needs, to increase the accessibility of native chickens, and to have diverse menus and recipes as well as reasonable pricing for native chickens.

• 한국가금학회지
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• 제43권2호
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• pp.63-76
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• 2016

The genetic diversity of Korean native chicken is important for conservation of native chicken breeds and developing economically valuable traits in Korea. In this review, various types of genetic markers using Korean native chickens were investigated, which are mtDNA variations, microsatellite markers, markers in Major Histocompatibility Complex (MHC), and single nucleotide polymorphisms (SNPs). These genetic markers are suitable for breed discrimination and diversity studies because of their high polymorphism status. Thus, the purpose of this study was to summarize the genetic markers developed in the Korean native chickens and diversity studies using these breeds. Ultimately, these markers can be used for the future studies for understanding of genetic characteristics.

• 한국축산식품학회지
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• 제41권2호
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• pp.237-246
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• 2021

The taste-active and nutritional components of Thai native, broilers, black-boned, and spent hen chickens were analyzed. The amounts of tasty amino acids especially glutamic acid were the highest in Thai native chicken. The black-boned chicken had the highest arginine content, related to the least amount of consumer satisfaction. Concerning nutritional quality, choline, and taurine were deemed important for brain function. The black-boned chicken showed the highest choline and taurine contents, unlike that of the spent hens. In contrast, broilers presented the highest betaine content, which might be attributed to their lipid metabolism. L-carnitine content was abundant in black-boned and Thai native chickens. Moreover, the amounts of essential amino acids were high in Thai native chicken. In conclusion, black-boned chicken proved to be an excellent nutritional source for health-conscience consumers, whereas the Thai native chickens were flavourful and delicious.

• Journal of Animal Science and Technology
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• 제45권1호
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• pp.1-12
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• 2003

본 연구에서는 국내 고유 재래 가축들의 유전정보와 유전학적 개량의 기초자료 제공을 목적으로 고분염 분석(high-resolution banding) 방법에 의한 한국재래계의 염색체 분염 표지를 제시하였다. 본 연구에 공시된 한국재래계로서는 축산기술연구소에서 계통화 시킨 황갈색 및 적갈색 계통으로 이들이 생산한 수정란의 초기 배자를 이용하여 염색체 분석을 수행하였으며 닭의 초기배자에 EtBr 및 colchicine을 처리함으로써 보다 양호한 고정도 염색체를 획득하였다. 한국재래계의 GTG-banding 결과 모든 상동염색체간에 뚜렷하고 특징적인 band 양상을 얻을 수 있었으며, Leghorn 및 국제표준핵형(ISSAK)과 비교시 염색체의 형태적 양상에서는 거의 차이가 없는 것으로 분석되었고 대표적 landmark간에도 거의 일치되는 양상을 보였다 그러나 대부분의 한국재래계의 대형염색체에서 더 많은 G-band의 분리 양상을 보이고 특히 1번 및 Z 염색체에서 특징적 분리 양상의 차이를 보였다. 한국재래계의 C-banding 분석에서는 세포별 heterochromatin의 다형성을 보이기는 하나 대부분의 염색체의 동원체와 말단부위에서 C- band가 나타났으며, Z 염색체 장완 말단부와 W 염색체 전체에서는 거의 모든 세포에서 C-band가 출현하였다. 또한 3번 염색체 동원체와 Z 염색체 장완 말단부에서 특징적 다형성을 나타내어 이들 염색체들에서는 상동염색체간 heterochromatin의 이형적 양상(heteromorphic)이 존재함을 밝혔다.