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Heritability of susceptibility to scrotal herniation in swine

Heritability of susceptibility to scrotal herniation in swine

American Journal of Veterinary Research 51(9): 1501-1503

Data on 5,711 Duroc-sired, 2,227 Landrace-sired, and 2,494 Yorkshire-sired male pigs born over a 9-year period were used to evaluate the genetic influence on scrotal herniation. Differences in frequency of this defect among boar breeds (Duroc, Landrace, and Yorkshire) were significant (P less than 0.01). Differences among sires within the Duroc and Landrace boar groups were significant (P less than 0.001 and P less than 0.05, respectively), but differences within the Yorkshire group were not significant. Frequency of scrotal hernia among male full siblings of affected males was consistently higher than the overall frequency of the defect among progeny in each of their respective breed of boar groups. Percentage of affected pigs among male full siblings of affected males for Duroc, Landrace, and Yorkshire groups, respectively, was 3.0, 3.0, and 2.7 times greater than the overall percentage affected in their respective breed groups. Heritability of susceptibility to scrotal hernia development was estimated to be 0.29 +/- 0.17, 0.34 +/- 0.23, and 0.34 +/- 0.19 in Duroc, Landrace, and Yorkshire-sired pig groups, respectively.

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Accession: 001851069

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PMID: 2396801

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