National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Vliv ročního období na složení a bod mrznutí mléka holštýnských dojnic ve vybraném chovu
Hájková, Kamila
The aim of the bachelor work was to evaluate the effect of season on major milk components of Holstein cows in the selected dairy farm. We monitored milk fat, pro-tein and freezing point. All avaible data and informations about milk composition, free-zing point of milk as well as history of the Holstein breed and animal recording were summarized in the literature review. Milk for subsequent analysis was collected every three months from spring to winter 2014 during animal recording in the Lesoňovice farm, which deals with raising Holstein cows. Samples were analyzed in the laboratory of applied lactology at the Institute of Animal Breeding of the Mendel University in Brno. Milk yield was determined through animal recording. We calculated average values of observed parameters for each season, and then compared with other periods. The results show that the influence of the season was most apparent in milk fat content and the freezing point of milk but less obvious in protein content.

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