Specific combining ability of meat and reproductive traits of hens during two periods of egg production
1997
Bernacki, Z. | Mazanowski, A. (Akademia Techniczno-Rolnicza, Bydgoszcz (Poland). Wydzial Zootechniczny)
In the end of the first year of production the hans by N11 cocks weighed 2149 g and at the age of 100 week - 2378 g, however the hens by P02 cocks weighed 2359 g and 2506 g, respectively. The crosses by the hens KA42 were characterized by the greatest body mass at the age of 72th week - 2270 g, and at the age of 100th week - 2470 g. Slaughter yield and meat content in carcass were the best in the case of hens by P02 cocks (61,0 percent and 636 g) and in the case of hens by K46 mothers (60,0 percent and 606 g). The most eggs laid the crosses by the cocks P02 (245 and 90 eggs) and by the hens K46 (241 and 90 eggs). It was shown that the crosses by P02 cocks with regard to a large egg production, body mass, meat content in carcass and a little feed consumption per egg suit for comercial production better than the crosses by N11 cocks. Significant mother's effect majority of traits wasn't observed. Significant effect of specific combining ability of production and feed consumption per egg wasn't observed, too
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