Effect of dry dairy cow nutritional status on first 90 days milk production was evaluated in high producing lactating Holstein cows. data of 4 herds with average 98 milking cows were used. all .cows were dried off 40-50 days before calving and moved to the close-up dry herd around 25 days before calving. close-up dry ration (dm basis) was consisted of 2.2 kg alfalfa \\\'hay, 6.1 kg corn silage, 1.9 kg wheat straw and 5.2 kg concentrate (cp: 179 g/kg; me: 13.1 mj/kg). in 2 herds, the cole-up ration was supplemented with 0.2 kg palm fat (99.5% fat) and 0.5 kg wheat grain. after parturition, all cows were fed a ration (as dm) based on 24% alfalfa hay, 14% com silage and 60% concentrate (cp: 180 g/kg; me: 12.2 mj mc/kg dill). weekly milk production was recorded. data were analyzed using glm procedure of sas. firsr 90 days milk yield was significantly influenced by closeup fat+grain supplementation (p< 0.05). milk \\\'yield of fat+grain supplemented and nonsupplemented cows was 42.6 and 40.7 kg/d/head, respectively. therefore, relationship between close-up period fat and wheat grain supplementation and milk production in the firt 90 days was a critical point.

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