Veiksniai, įtakojantys somatinių ląstelių kiekį kontroliuojamų karvių piene

Abstract

Goal of work: evaluate and analyze the factors that have an impact on the quantity of the somatic cells in cow‘s milk. Objectives of work: 1. To select and collect the data of the milk tests of the cows under observance when the lactation was over, taken in 2003-2004. 2. To describe the collected data by setting the diversity of age and breeds of cows under observance and evaluating the greatness of farms. 3. To estimate statistically and describe the impact of such factors as breed, age, season, greatness of farm, type of sample collection and the person taking it, impact on the quantity of the somatic cells in the milk of the observed cows. Conclusion: Statistically, the breed and age of an animal influence upon the quantity of the somatic cells in milk. The least number of the somatic cells can be detected in the milk of the cows that are young or used to the local keeping and feeding conditions. 1. The greatest quality of milk from the perspective of the somatic cells is achieved in grand farms that keep over milking cows. 2. The influence of the person taking a sample on the quantity of the somatic cells in milk is confidential statistically. The right order of taking a sample has a crucial meaning to the further investigations on the productivity of cows. It is recommended to organize a periodical training of the control assistants and the owners of the observed cows, putting emphasis on the importance of the right way of taking a sample.