학술논문
國産鷄 改良을 위한 合成種 育種에 關한 硏究
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- 영문명
- A Study on Development of Synthetic Strains for Improvement of Domestic Chicken
- 발행기관
- 한국육종학회
- 저자명
- BONG KUG OHH(吳鳳國)
- 간행물 정보
- 『한국육종학회지』Vol.11 No.2, 59~64쪽, 전체 6쪽
- 주제분류
- 농수해양 > 기타농수해양
- 파일형태
- 발행일자
- 1979.08.30
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국문 초록
영문 초록
This experiment was based on single cross data during 64 weeks from diallel crossing system to identify superior cross combinations in Seoul National University, College of Agriculture, Poultry Breeding Farm.
Total 1599 birds of 10 single strain crosses were obtained from 4 inbred lines of white Leghorn, A(domestic), S(domestic), C(imported), and K(imported).
CK crossbred, crossproduct of C and K purebreds which were selected for resistent to Limphoid Leuicosis in U.S.A., showed the most losses due to Leukosis. Therefore this study seems to be concluded that the lowest viability results from interaction between genes for Leukosis and Korean environment.
In estimate of combining abiliy, egg productivities of A and K strains were identified as superior for general combining ability, while combining ability of S strain which showed the best performance among 4 purebreds is very low and in this result it was evident that performance of crossbred was not dependent upon that of it’s parent but combining ability between parents. Since combining ability variance for egg weight of all strains is very low compared with error variance, improvement of this character in use of cross combinations of these experimental strains will not be expected.
In breeding for body weight, considering heavier layer requires more feed for body maintenance, A and K strains calculated lower combining ability variance were desirable.
Following the above results, using the A and K strains among 4 experimental strains in this study were agreed to be able to improve the laying productivity through their cross combination for their superior combining ability.
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ABSTRACT
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試驗材料 및 方法
結果 및 考察
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