indicated that concentration, level of supplement and
source of tannins and saponin are impact on the result
of animal production. Mosley et al. (2007) reported
that milk yield and milk fat were increased in dairy
cows having diets supplemented with PO. Banks et al.
(1976) found that supplementation of PO containing
620 g/kg palmitic acid resulted in increased milk yield
and milk fat. Increased milk production and milk fat
has also been reported by Purushothaman et al.
(2008) in cows fed diets supplemented with PO at
40 g/kg. The improvement in milk yield associated
with supplemental fat can largely be attributed to an
improvement in energy balance (Grummer, 1991).
The increase in milk fat yield might be due to a higher
proportion of fatty acid intake being directly transferred
to milk fat.