Details van artikel 129 van 196 gevonden artikelen
On estimating components of genetic variance in diallel matings
Titel:
On estimating components of genetic variance in diallel matings
Auteur:
Sato, M. Nordskog, A. W.
Verschenen in:
British poultry science
Paginering:
Jaargang 18 (1977) nr. 6 pagina's 699-704
Jaar:
1977-11
Inhoud:
1. The relative importance of additive and non-additive genetic effects on body weight, egg weight, maturity and rate of egg production were studied from diallel matings in a Leghorn population. 2. From analyses of variance, heritability estimates of the additive fractions, based on half-sib variances, and the non-additive or dominance fractions, based on the sire x dam interaction component were obtained. 3. Non-additive genetic effects were not statistically significant for any of the traits, though for rate of egg production at 32 and 62 weeks, the non-additive effects as proportion of total variances were 0.29 (P<0.10) and 0.20 (P<0.16), respectively, compared additive effects of 0.08 (NS) and 0.11 (P<0.05). 4. The ratios of non-additive to additive variances, 1.89 and 3.62 respectively, give support to inbreeding and hybridisation or reciprocal recurrent selection as methods of genetic improvement of egg production.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 129 van 196 gevonden artikelen
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