Two samples of females the Landrace Breed have been classified in homozygous for the gene Hal (HalN/HalN) and heterozygous (HalN/Haln), using a DNA probe. The differences between the two genotypes regarding reproductive traits (total number of piglets bom, number of born alive) were not statistically significant (P>0.10) in the two samples of females. The effect of the genotype in the Hal locus on average daily gain and backfat tickness was analyzed using a group of 132 animals. In this case the differences between the genotypes were not statistically significant either (P>0.10). The consequence of these results in selection strategies are discussed.

J. L Noguera, L. Alfonso, D. Babot, J. Estany, A. Sanchez

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 442–445, 1994
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