Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Comparison of Production Performances between Early- and Late-feathering Chickens in Parent Stocks of Korean Native Chicken

토종종계에 있어 조우성 개체와 만우성 개체간 생산능력 비교 고찰

  • Kim, Ki Gon (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology) ;
  • Cho, Eun Jung (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology) ;
  • Choi, Eun Sik (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology) ;
  • Kwon, Jae Hyun (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology) ;
  • Jung, Hyun Chul (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology) ;
  • Sohn, Sea Hwan (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology)
  • 김기곤 (경남과학기술대학교 동물생명과학과) ;
  • 조은정 (경남과학기술대학교 동물생명과학과) ;
  • 최은식 (경남과학기술대학교 동물생명과학과) ;
  • 권재현 (경남과학기술대학교 동물생명과학과) ;
  • 정현철 (경남과학기술대학교 동물생명과학과) ;
  • 손시환 (경남과학기술대학교 동물생명과학과)
  • Received : 2019.10.21
  • Accepted : 2019.11.21
  • Published : 2019.12.31
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Abstract

Currently, feather-sexing, which is based on differences in feather development at hatching, is a widely used chick sexing method in the poultry industry. For effective chicken feather-sexing, paternal early-feathering (EF) chickens and maternal late-feathering (LF) chickens must be bred. Therefore, it is critical to identify the effect of EF and LF patterns on production traits in chickens. Thus, the purpose of this study is to analyze and compare the production performances between 522 EF and 232 LF chickens in order to establish the Korean native chicken feather-sexing lines. The results showed that the survival rate of the LF group was significantly higher than that of the EF group from hatching to 52 weeks of age (P<0.05). Body weight, however, was not significantly different between the two groups at all ages. LF and EF groups did not significantly differ in age at first egg laying. However, the hen-day and hen-housed egg production of the LF group were significantly higher than those of EF group (P<0.01). No significant differences were found between the EF and LF groups in all egg quality indicators such as egg weight, eggshell color, albumin height and Haugh unit. Because the breeding target of Korean native commercial chicken is meat-type chicken, feather-sexing strains of Korean native chicken should be established using weighing-based paternal EF lines and laying-based maternal LF lines. Therefore, these results are critical for establishing desirable and effective feather-sexing strains.

현재 병아리의 성 감별은 만우성 유전자를 이용한 깃털감별법이 산업적으로 가장 널리 이용되고 있다. 그러나 깃털감별을 위한 계통 조성은 반드시 부계는 조우성, 모계는 만우성이어야 함으로 깃털의 조만성이 생산능력에 미치는 영향을 알 필요가 있다. 따라서 본 연구에서는 토종종계의 깃털 자가성감별 계통 조성을 위하여 이들 중 만우성 개체들과 조우성 개체들 간의 생산능력을 비교 분석하고자 하였다. 분석 결과, 발생 후 52주령까지의 생존율은 만우성 집단이 조우성 집단에 비해 유의하게 높은 생존율을 보였다(P<0.05). 체중은 거의 모든 주령에서 조우성과 만우성 집단간 차이는 없는 것으로 나타났다. 산란능력에 있어 초산일령은 두 집단간에 차이가 없었으나 일계산란율 및 산란지수의 경우 공히 만우성 집단이 조우성 집단에 비해 유의적으로 높은 성적을 나타내었다(P<0.01). 난중을 비롯한 난각색, 난백높이 및 하우유니트 등 모든 난질 지표에 있어서도 조우성 집단과 만우성 집단간에 차이는 없는 것으로 나타났다. 결론적으로 토종닭의 육종 목표는 육용형이므로 깃털감별계통 조성시 부 계통은 체중 위주의 조우성으로, 모 계통은 산란성 위주의 만우성으로 조성되어야 한다. 따라서 본 결과는 토종종계의 깃털 자가성감별 계통 조성을 위해서 매우 바람직한 현상으로 사료된다.

Keywords

References

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