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Genetic variation in colour pattern of Wessex saddleback pigs

Published online by Cambridge University Press:  27 March 2009

H. P. Donald
H. P. Donald
Affiliation:
Animal Breeding and Genetics Research Organization, Edinburgh
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Extract

Mating Wessex Saddleback with Gloucester Old Spot pigs shows clearly that the former are of the three genotypes expected if the belt pattern is primarily determined by a single dominant gene (Be). Breeding tests and measurements of belt width agree in showing that homozygotes tend to have medium to wide belts, heterozygotes tend to have medium, narrow or broken belts, while pigs homozygous for the recessive are black. Crosses of Wessex with black-spotted pigs produce black piglings with or without wide symmetrical belts depending on the genotype of the Wessex parents.

Selection of breeding pigs with narrow belts maintains a high incidence of recessive blacks. Solid blacks which are nevertheless genetically belted may occur, but if so their numbers are likely to be very small.

Evidence is given which suggests that pigmentation in the skin and hair of Wessex × Large White pigs is much reduced if the Large White parents have blue eyes.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 41 , Issue 3 , July 1951 , pp. 214 - 221
Copyright
Copyright © Cambridge University Press 1951

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References

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