The Study on Production and Performance of Crossbred Korean Native Chickens (KNC)

Abstract

The current work was carried out to investigate the effect of crossbred Korean native chickens (KNC) on performance and carcass ratio. Seven hundred twenty 1-d-old chicks were divided into groups by strain (A, B, C and D) and sex (male and female). Strains were 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 and D) (KNC native L strains × KNC meat type H strains × Ross broiler. Experimental diets consisted of 3 phases such as starter(0～5 weeks; CP 20.0%, ME 3,050 kcal/kg), earlier (5～8 weeks; CP 18.0%, ME 3,100 kcal/kg) and finisher (8～12 weeks; CP 16.0%, ME 3,150 kcal/kg). Body weight (BW) and feed intake (FI) was measured every week and carcass ratio(CR) was calculated at 5 and 10 week after starting experiment. There was no difference in BW among strains until 5 weeks (P>0.05), however D strain resulted in a higher BW after 5 weeks (P<0.05). Body weight gain (BWG) and FI in D strain were also significant higher compared to the other strains for all periods. However, D strains showed the lowest (P<0.05) fee conversion ratio (FCR). The other strains except D showed a similar BW, BWG, FI and FCR among strains. In addition, there were no differences in carcass weight (CW) and carcass ratio (CR) among strains at 5 weeks, however D strain showed higher CW and CR at 10 weeks. These results suggested the basic data that needed to develope the new strains.

The Analysis of Semi Intensive Native Chicken Farming in Rural Communities

“…Table 3 shows that the number of productive hen per farmer per year was 8 birds, therefore they produced 594 eggs or 66 eggs/hen/year. The productivity of semi intensive native chicken farming in the study area was good compared with the result of previous research (Dutta et al, 2013;Park et al, 2010) that hatching rate and production cycle of Bangladesh indigenous chicken and Korean cross breed native chicken were 79.30%, 82.8% and 4 -6 times per year respectively while the hatching rate and production cycle of native chicken farming running by "Poyuyanan" group farmers in Poyowa Besar Village were 88.7% and 6 times/year respectively. This is because a female Bangladesh indigenous chicken lays 3-4 clutches of eggs yearly.…”

Comparative Analysis of Meat Quality Traits of New Strains of Native Chickens for Samgyetang

“…토종닭 고기는 육계에 비해 더 어둡고 붉은 육색을 지니고 있으며, 필수지방산과 콜라겐을 더 함 유하고 있고 (Jeon et al, 2010), 더 나은 관능적 특성을 보인 다 (Choe et al, 2010). 그러나 토종닭은 육계에 비해 성장률 과 사료효율이 떨어짐으로 인해 출하일이 늦어 경제성이 상 삼계용 신품종 토종닭의 육질특성 비교분석 이성윤 1 ․박지영 1 ․현정민 1 ․정사무엘 2 ․조철훈 3 ․남기창 4 † 1 순천대학교 동물자원과학과 학생, 2 충남대학교 동물자원생명과학과 교수 대적으로 낮으며, 계통이 명확히 확립되어 있지 않아서 산업 화와 규모화가 어려운 실정이다 (Park et al, 2010). 현재 유 통되고 있는 토종닭의 종류는 "한협3호" 라는 브랜드가 주 류를 이루고 있으며, 국립축산과학원에서 토종닭의 순수성 확립과 실용화를 위한 연구을 통해 '우리맛닭'이라는 브랜 드를 출시하여 보급되었지만 (Kim, 2010), 유통되는 토종닭 의 종류와 산업화는 매우 제한적인 실정이다.…”

Estimation of linkage disequilibrium and analysis of genetic diversity in Korean chicken lines

“…In this context, farmers in Korea have considered commercial production of the KNC, which is known for its adaptability to seasonal changes and the breeding of which is associated with lower costs due to environmental control [ 14 ]. The KNC is also recognized to have superior meat quality, with excellent texture and flavor [ 15 , 16 ].…”