Analyse of Relation between Milk Production and Somatic Cells Count in Slovak Simmental Dairy Cows by Different Breeding Conditions

Abstract

The aim this work was to of relation between milk production and somatic cells count in Slovak Simmental dairy cows by different breeding conditions in the period 2010 to 2014. Data were analysed using the SAS version 9.3 (TS1M2) and linear model with fixed effects of herd, years and months controls. The results of somatic cells count during the years 2010 and 2014 were as follows: the highest number of samples was analysed during 2014 (n = 49,974), where the average count was 163.50*103.ml-1. The lowest average value of somatic cells count was in 2010 in amount 178.90*103.ml-1 (n = 42,489). The analyses by the effect on somatic cells count was the highest effect of herd-years-season of control R2 = 0.033970 than effect of herd R2 = 0.011951. These effects were high statistical significant P<0.001. Correlation coefficients between milk in kg, fat, protein in % with somatic cells count were r= -0.09878, r= 0.05457and r= 0.09674. These coefficients were high statistical significant P<0.001.

Keywords

• slovak simmental cattle
• dairy cows
• somatic cells count
• traits of milk production
• breeding conditions
• coefficients of determination