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| Titel: |
Food Efficiency in Pure Strains and Hybrids of Laying Hens Analysed in a Diallel Cross: I. Effect of Total Heterosis on Important Traits |
| Auteur: |
Brenøe, Ulrik Tutein |
| Verschenen in: |
Acta agriculturae Scandinavica. Section A, Animal science |
| Paginering: | Jaargang 46 (1996) nr. 3 pagina's 137-143 |
| Jaar: |
1996-08-01 |
| Inhoud: |
The present paper describes the effect of heterosis found in a full diallel design 4×4 pure strains of laying hens. There were 36 individually measured hens per combination. In economic terms and with regard to a low food conversion ratio (FCR), positive heterosis was found for egg weight, egg number and total egg mass, while negative heterosis was found for food consumption in the rearing period 0-16 weeks, body weight, weight gain and yolk percentage. On average, there was negative but non-significant heterosis for FCR. Five of the combinations had positive but non-significant heterosis in FCR, while seven combinations had negative heterosis; three were significantly different from zero. No significant differences in mortality between the pure strains and the hybrids were found. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 8 gevonden artikelen
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