A generalized linear finite mixture model and an expectation-maximization algorithm to fit the model to monthly somatic cell count data are discussed. The proposed algorithm can be readily implemented in available animal breeding packages. This model accounts for non- genetic effects affecting somatic cell counts differently in healthy and in infected cows.

%V 25: Lactation; growth and efficiency; meat quality; role of exotic breeds in the tropics; design of village breeding programs; n %P 67–70 %G eng