on the contrary, a reduction of fat yield in CT and
FO cows was found with the increase in THI. Fish oil
supplementation did not positively affect milk yield
and composition of experimental cows. The effects of
fish oil supplementation on milk yield and quality depend
on different doses. Previous findings stated that
fish oil supplementation reduced both protein and CN
yields and contents of milk when administrated in doses
of 300 mL/d or higher (Chilliard and Doreau, 1997;
Lacasse et al., 2002).