SUMMARY
Ten does of the Saanen, Toggenburg, Anglo-Nubian and the Alpine genotypes
were examined for milk yield, fat and protein content as well as somatic cell count
of their milks during 11 months of their first lactation under similar environmental,
feeding and milking conditions. The daily milk yield showed a decreasing pattern
during lactation. Milk fat, andprotein content as well as somatic cell count were
varied with a negative correlation with milk yield. The Saanen and Alpine
genotypes proved the best in respect of average milk production corrected for a
305-days lactation, whereas their milk contained the highest somatic cell count.
TheAnglo-Nubian genotype proved the best in respect of fat content and somatic
cell count of milk, but with the lowest milk production. The Toggenburg genotype
showed intermediate value for the milk production. The differences found in the
milk production traits among the four genotypes may be attributed togenetic origin.