V. Foltys et al., THE EFFECT OF FEEDING EXTRUDED FULLFAT SO YA ON THE COMPOSITION OF FATTY-ACIDS IN COWS MILK-FAT, Zivocisna vyroba, 41(2), 1996, pp. 83-86
The objective of the paper was to determine the composition of free fa
tty acids in milk of dairy cows that received extruded fullfat soya. T
hirteen fatty acids were determined. There were statistically signific
ant differences (P < 0.05) in fatty acid percentages concerning capric
acid C-10:0, lauric acid C-12:0, stearic acid C-18:0, and linolic aci
d C-18:2 between the period without extruded fullfat soya feeding and
the period of its administration (Tab. III). The feeding of extruded f
ullfat soya increased the content of essential fatty acids as for lino
lic acid C-18:2 and linolenic acid C-18:3 and in addition, the content
of arachidic acid C-20:4 was determined (Tab. III). The content of fa
tty acids in milk fat ranged from 60.63% to 63.50% and the difference
between the experimental periods was statistically significant. The in
dexes of fat nonsaturation (I-1) and nutritive value (I-2) were calcul
ated. The indexes did not show any significant differences for the per
iods of observation (Tab. IV).