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| Titel: |
Abnormal segregation of a haemagglutinating gene in a control flock |
| Auteur: |
Mcphee, C. P. |
| Verschenen in: |
British poultry science |
| Paginering: | Jaargang 12 (1971) nr. 4 pagina's 439-449 |
| Jaar: |
1971-10 |
| Inhoud: |
The frequency of a dominant autosomal gene Ka + was observed during two generations in a pedigree control flock of Australorps. The red blood cells of birds carrying the Ka + gene were agglutinated by Kahn's antigen. Male parents heterozygous at the haemagglutination locus transmitted the Ka+gene and its alternative the Ka∼ gene to their offspring in the ratio of 0.6 to 1. Female parents had normal transmission ratios. Eggs from matings with sires carrying the Ka+ gene showed reduced fertility and there was an increased mortality of embryos early in development. These eggs had a 14.6 per cent lower hatchability than eggs from Ka-sire matings in one generation and a 5.2 per cent lower hatchability in the next. The frequency of the Ka+ gene in the flock declined from 0.23 to 0.16 between the parents of one generation and the offspring of the next despite the restraint of the pedigree control system. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 1 van 12 gevonden artikelen
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