This study was conducted to investigate the effect of different levels (40mg ‘ 80mg and 120mg i‘kg DMl ) of zinc methionine supplementation on the digestion coefficients, nutritive value , ruminal and some blood parameters and birth weight of their offspring , milk yield and milk composition of the experimental Friesian dairy cows were also investigate . Animals were fed according to the NRC feed allowances for dairy cattle (1988) Twenty pregnant Friesian dairy cows at the last three months of pregnancy were divided into four similar groups ( five animal each) fed in the following rations 1- The control group was fed concentrate feed mixture (CFM) + berseem hay + rice straw ) without zinc methionine supplementation. 2- The 15‘ tested group fed control ration + 40mg zinc methionine lkg dry matter intake (DMl) .3- The 2“d tested group led control ration + 80mg zinc methionine lnMl 4— The 3'd tested group fed control ration + 120mg zinc methionine lnMl . All groups were fed from about three months before the expected calvrng date and continued up to the first 210 days of their lactation season. Results indicated that the addition of different levels of zinc methionine had improved the digestibilities of DM,OM.CP,CF, feeding values as TDN and DCP, feed efficiency and thus increased milk yield compared with the control group. Birth weight of calves was increased with 40mg Zinc methionine level compared with the other levels and the control group .Moreoverl zinc supplementation improved serum total protein and globulin, but it reduced the concentration of both albumin and urea in blood serum