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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국가금학회 한국가금학회지 가금학회보 제7권 제2호
발행연도
1980.11
수록면
28 - 36 (9page)

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초록· 키워드

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This study was carried out to estimate combining abilitie or economic traits in layer chickens. The data used in this study were the record of 10 single crosses produced by half diallel cross of 5 lines of Single Comb White Leghorns, such as A, B, C, K and S lines. Total 720 progenies of the crosses were reared at the Poultry Breeding Farm, College of Agriculture, Seoul National University from Feb. 1979 to August, 1980. Combining abilities were estimated by Griffing's mathematical model for the traits;age at the first egg, total egg number, egg weight and body weight.
The results abtained from the studies were summarized as follows; In estimate of combining ability, an age at first egg of BS cross was largely due to significiantl higher general combining ability(G. C. A.) effect of B and S strains than Cand K strains in G. C. A. effect, and to specific combining ability(S. C. A) effect of B ana S trains. AB and BS crosses showed the highest egg production. AB cross performance was result from high G. C. A. effect of A and B strains. BS cross performance was result from high G. C. A. effect of B and high S. C. A. effect of BS cross. Specific combining ability effect in egg weight was not statiscally significant, but S strain showed high G. C. A. effect. A and B strains in body weight showed significantly low G. C. A. effect.
From the above results, BS cross in an age at first egg, AB and BS crosses in egg production, S strain in egg weight and AB cross in body weight were superior to other strains or crosses.

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Summary

Ⅰ. 緖論

Ⅱ. 試驗材料 및 方法

Ⅲ. 結果 및 考察

Ⅳ. 考察

Ⅴ. 結論

<參考文獻>

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