Associations between bovine lactoferrin gene polymorphism and somatic cell count in milk
K. Wojdak-Maksymiec, M. Kmiec, J. Ziemakhttps://doi.org/10.17221/5512-VETMEDCitation:Wojdak-Maksymiec K., Kmiec M., Ziemak J. (2006): Associations between bovine lactoferrin gene polymorphism and somatic cell count in milk. Veterinarni Medicina, 51: 14-20.
The study included 124 Polish Black-and-White dairy cows of various share of the Holstein-Friesian (HF) breed. Lactoferrin (LTF) gene polymorphism was obtained with PCR-RFLP method using EcoRI enzyme. Two alleles of LTF, A and B, were found in the studied population. Their frequencies were 67.74% and 32.56%, respectively. The alleles controlled the occurrence of three genotypes: AA, BB and AB, of frequencies equal to 37.90%, 2.42% and 59.68%, respectively. It was established that statistically significant associations exist between the somatic cell count (SCC) and LTF genotype, lactation month and parity as well as the HF gene share. No significant association was found between somatic cell count and season. The highest somatic cell count (transformed to a logarithmic scale) was found in milk of the AB genotype, whereas the lowest one was found in cows of the AA genotype.Keywords:
lactoferrin; polymorphism; somatic cell count; bovine