Milk production and modification of milk fatty acid of dairy cows FED PUFA-concentrate

Some fatty acid supplements in concentrate containing curcuma xanthorrhiza,roxb were evaluated for effects on milk yield,milk fat and protein,including milk fatty acid. four lactating (4 ± 1.5 months ) fries holland (fh) cows were allocated into four treatments of concentrate containing 4.5% palm oil (cp0),4.5% corn oil (cp1),4.5% roasted ground corn (cp2),and 1.5% corn oil and 3% roasted ground corn (cp3),respectively,in 4 x 4 latin square experimental design with 3 d-period. results showed that there were no significant (p>0.05) effects on milk yield,milk fat and protein,and milk fatty acid. however,the highest average of milk production was found in cp2 (8.63 kg/d). milk fat was decreasing to 3.81% in conjunction with the more potential total pufa (71.81%) in cp3 with corn oil and roasted ground corn. ratio of omega-6 to omega-3 in milk was the same in both,cp2 and cp3,it was 2.14. however,since the objective of this research was to improve milk yield as well as milk components and health concern,therefore the cp2 with roasted ground corn was considered as the optimal one. © 2010 de gruyter open ltd. all rights reserved.