Bovine kappa-casein and its association with somatic cell count in holstein cattle
DOI:
https://doi.org/10.17533/udea.acbi.329454Keywords:
CSN3, factorial analysis, allelic frequency, genotypic frequency, antimicrobial activity, milkAbstract
It was evaluated the association of genotypes AA, AB and BB of kappa-casein (CSN3) and the somatic cells count (SCC),as well as the relation between the occurrence of recurrent clinical mastitis and the genotypes, using a simple correlation.A total of 145 Holstein breed cows were sampled for milk and blood in different farms of department of Antioquia,Colombia. A fragment of the CSN3 gene was amplified by polymerase chain reaction; then, the amplified fragment was restricted with endonuclease Hinf I, and visualized on agarose gel electrophoresis. For the milk samples, the SCC was classified in two ranges: the first included animals which SCC did not exceed 300 x 103 cells/ml, and the second includes animals with a SCC higher than 300 x 103 cells/ml. It was detected a weak association between the genotype AA and lowSCC, and the genotype AB and the high SCC. This association was higher for the genotype AA than for AB.
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