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) Enterprise Guide 5.1. 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= 0.05457 and r= 0.09674. These coefficients were high statistical significant P<0.001. Supported by the Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic and the Slovak Academy of Sciences (VEGA) (Project No. 1/0742/17).
Król, J. et al., Effect of somatic cell counts in milk on its quality depending on cow breed and season. Annales UMCS 28, 2010, (3), p. 9-17.
Němcová, E. et al., The relationship between somatic cell count, milk production and six linearly scored type traits in Holstein cows. Czech Journal of Animal Science, 2007, vol. 52 (12). p. 437-446.
Jadhav, P.V., Tarate, S.B., Bhuvana, M., Das, D.N. , Shome, B.R., Somatic cell count as a monitoring system for hygienic milk production in India: A review. Asian J. Dairy & Food Res., 2016, 35: 270-277.
Haile-Mariam. M., Bowman, P. J. and Goddard, M. E., Genetic and environmental correlations between test-day somatic cell count and milk yield traits. Livest. Prod. Sci., 2001, vol. 73, p. 1–13.
Le Maréchal. C. et al., Mastitis impact on technological properties of milk and quality of milk products—a review. In Dairy Science & Technology, 2011, vol. 91(3), p.247-282.
Alam M., Cho C.I., Choi T.J., Park B., Choi J.G., Choy Y.H. et al., Estimation of genetic parameters for Somatic Cell Scores of Holsteins using multi-trait lactation models in Korea. Asian-Australas J Anim Sci. 2015;28:303–10.
Zavadilová, L., Štípková, M., Svitáková, A., Krupová, Z., Kašná, E., Genetic Parameters for Clinical Mastitis, Fertility and Somatic Cell Score in Czech Holstein Cattle. Annals of Animal Science, 2017, 17(4), 1007-1018.
European Commission, Regulation (EC) No. 853/2004 of the European parliament and of the council of 29 April 2004 laying down specific hygiene rules for food of animal origin. OJ EU L 47. 206.
Souza. G. N. et al., Factors affecting somatic cell counts (SCC) in Brazilian dairy cows. In: Animals and environment. Vol.1: Proceedings of the XIIth ISAH Congress on Animal Hygiene. Warsaw. Poland. 4-8 September 2005, BEL Studio sp. zoo. 2005. p. 237-240.
Bujko, J., Candrák, J., Strapák, P., Žitný J., Hrnčár, C., The Assessment of Genetic Diversity and Analysis Production and Reproduction traits in difference breeding type of Slovak Simmental cattle. Scientific Papers Animal Science and Biotechnologies, 2013, 46.2: 58-62.
Bujko, J., Žitný J., Hrnčár, C., Factors effecting on the calving interval in Population of Slovak Spotted Breed. In: Book of Abstracts of the XXIVth GENETIC DAYS 2010, Mendel University in Brno, 2010, p. 14, ISBN 978-80-7375-423-5.
Kasarda, R., Trakovická, A., Moravčíková, N., Šidlová, V., Kadlečík, O., Research on Diversity, Utilization and Production Quality of Local Breeds in Slovakia. In PoljoPrivreda, 21(1 SUPPLEMENT): 11-15.
Sharif, A., Muhammad, G., Somatic cell count as an indicator of udder health status under Modern dairy production: a review. In: Pakistan Vet. J., 2008, 28(4): 194-200.
The Breeding Service of the Slovak Republic. S.E. Results of dairy herd milk recording in Slovak Republic at control years 2012 to 2015.
SAS User’s Guide 2002-2003. Version 9.3 (TS1M3). SAS Institute. Inc., Carry. NC. USA.
Koivula, M. et al., Genetic and phenotypic relationship among milk yield and somatic cell count before and after clinical mastitis J. Dairy Sci., 88 (2005). p. 827–833.
Kheirabadi, K. et al., Estimation of genetic parameters and genetic trends of somatic cell score in Iranian Holstein cows using test-day records. Iranian Journal of Applied Animal Science, 2014, 4.4: 707-716.
Japertienė, R. et al., Evaluation of the milk production and somatic cell count of Lithuanian purebred and crossbred dairy cows. Veterinarija ir Zootechnika, 2016, T. 73 (95) Supplement, p. 51-57.