Effect of Spraying Water on the Body of Holstein Cows under Heat Stress Conditions in Milk Production and Components

Abstract The aim of the current experiment is to reduce heat stress on imported Holstein cows in central Iraq during months August and September. Using 12 multiparous from milk-producing raised station, divided into three treatments each treatment containing 4 cows. C = without spraying (control treatment), T1 sprayed once a day at 1 pm T2 twice 11 am pm. results statistical analysis indicated that there were significant differences between daily milk production second, fourth eighth weeks twice-daily treatment, which recorded 13.25, 14.50 13.00 kg/cow/day, respectively, compared with control second weeks, where It 9.50 11.00 week, was 8.50 it noted no total trial period. However, an arithmetical increase amounted 796 kg/cow 694 kg/cow, 722.75 for components include fat, protein, lactose sugar, ash density There We conclude water period had positive effect increasing some