engleski

Milking type influence on somatic cell and total bacterial count in raw milk in Croatia

The Project "How to improve the raw milk quality on dairy farms in Croatia", met its main aim which was to help producers meet the EU standards for somatic cell and bacteriological counts. In first step of project attention was paid to estimate the influence of different type of milking (hand or machine) on total bacterial and somatic cell counts. Between September 1998 to April 1999, 641 samples of bulk milk from 241 family farms were monthly collected. Farms had different types of cattle housing and level of milk hygiene but same a simmental cows or their crosses. Bacterial counts were determined by standard plate count (SPC) and somatic cell counts (SCC) by Fossomatic cell counting. Repeated measurement model was used to analyze obtained data. Type of milking was defined as a fixed effect and farm within type of milking as a random effect. Differences between hand and machine milking were significant (P<0, 01), Higher bacterial and somatic cell counts in milk obtained by machine milking were due to not satisfactory washing and disinfecting a devices rather than infection of udder. It was concluded that program of education and better advice were needed to encourage producers to improve milk quality and that easily meet EU standards.

raw milk; milking type; bacterial count; somatic cell count

nije evidentirano