Acta Univ. Agric. Silvic. Mendelianae Brun. 2005, 53, 99-106
Published online 2014-12-28

Associations between microsatellite polymorphism within the macrophage expressed lysozyme (mLys) gene and milk Indices Properties in Polish Black-and-White Cows

Małgorzata Walczak-Wójciak1, Janusz Klupczyński1, Jan Miciński1, Martin Hošek2

1Univeristy of Warmia and Mazury in Olsztyn, Department of Cattle Breeding, 10-718 Olsztyn, Oczapowskiego 5, Poland
2Ústav chovu a šlechtění zvířat, Mendelova zemědělská a lestnická univerzita, Zemědělská 1, 613 00 Brno, Česká republika

The experiment was performed in the years 1998–2000 on two farms located near to Vistula Lowlands. The experimental materials were comprised of 52 daughters of bull Paran, among which 21 possessed the mLys-mic 7 allele and 31 – the mLys-mic 3 allele. The serum and whey bacteriolytic activity of the lysozyme, concentrations of selected mineral elements, technological properties of milk at successive the first lactation stages (30, 100, 150 and 200 days), somatic cell count and bacterial count were investigated in this study. The results obtained indicate that Lys-mic polymorphism has low suitability as a marker for milk production capacity in cows. The lysozyme gene, treated as a mastitis resistance factor, showed no effects on somatic cell count and bacterial count. Further investigations, conducted not only during the first lactation, but also during the next lactation in a herd threatened by a variety of pathogenic factors, would be carried to validate this Lys-mic gene polymorphism on mastitis resistance.


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