The objective of the study was to estimate the allele and genotype frequencies of the BLAD, DUMPS and kappa-CSN genes in Holstein young bulls of the national AI station of Iran. Of the 37 young bulls genotyped for CD18/HaeIII gene mutation, 36 were normal homozygote (AA), 1 was heterozygote for the disease (AB) and no affected homozygote genotype (BB) were found. The frequency of the normal and BLAD mutant allele were 0.99 and 0.01, respectively. The genotype frequencies in kappa-CSN/HinfI locus were 0.70 for homozygote (AA) and 0.30 for heterozygote (AB) animals while the frequency of the A allele was 0.85. In the present study it is shown that the genetic mutation responsible for DUMPS was absent in all of the young bulls analyzed from national AI station.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 01.76, 2006
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