The trial lasted four weeks. Animals were divided into two groups. Control cows 
(n=10) were fed the control (C) diet identical as in trial I while the diet for experimental 
cows (n=10) was enriched with fish oil and rapeseed oil blend (1:1) added up to 4% 
of the diet dry matter (FR diet) During the last week of trial II individual milk yields 
were recorded at each milking