Akademik Veri Yönetim Sistemi
ASIAN JOURNAL OF CHEMISTRY, sa.1, ss.795-801, 2009 (SCI-Expanded)
beta-Lactoglobulin (beta-Lg), alpha(s1)-casein (alpha(s1)-Cn) and beta-casein (beta-Cn) polymorphisms of East Anatolian Red breed cattle raised in Turkey were studied by applying starch urea gel electrophoresis. In addition, milk yield, fat content and rennet clotting time were determined. Electrophoretic analysis showed that milk samples taken from 34 East Anatolian Red cattle breed had AA, AB and BB genotypes of beta-Lg, BB and BC genotypes of alpha(s1)-Cn and AA and AB genotypes of beta-Cn. No differences were found for milk yield and fat content related with the genetic variants of beta-Lg, alpha(s1)-Cn and beta-Cn (p > 0.05). There were significant differences for rennet clotting time of milk related with the genetic variants of beta-Lg and beta-Cn (p < 0.05) whereas no differences were found with the genetic variants of alpha(s1)-Cn (p > 0.05). Therefore, it was concluded that selection of individual East Anatolian Red cows for AB genotype of beta-Lg and AA genotype of beta-Cn would be more appropriate, due to the fact that milk from these cows are associated with lower rennet clotting time.