Research on profit variation depending on marketed milk and production cost in dairy farming.

The paper aimed to analyze the effect of marketed milk production and milk production cost on profit in dairyfarming in Romania. In this purpose, the data from 10 dairy farms situated in the Southern Romania were collectedin the period 2011-2013. The average marketed milk per cow accounted for 5,507 kg with a variation coefficient of10.90 %. The average milk production cost registered Lei 1.07/kg milk, while the average milk price was Lei1.23/kg. The average profit coming from marketed milk accounted for Lei 984.89 per cow and yaer with a variationbetween Lei 2,375/cow/year, the highest level and Lei 314.4/cow/year, the lowest level. The variation coefficient,69.90 % reflected a large variation from a farm to another. Based on the equation of the regression plan, Z = 1.187x +11.46 y - 4,262 which assured the minimum residual variance, three variants of simulation were set up. Aconstant milk production cost, Y= Lei 1.07/kg, and a 100 kg growth of marketed milk could determine Lei 18.7additonal profit per cow and year. For a constant marketed milk of 5,507 kg, and an increased milk production costby Lei 0.02/kg has no influence on profit level. When marketed milk increases by 100 kg and milk production cost byLei 0.02 per kg, farmers' profit could increase by Lei 118.9/cow and year. Marketed milk and milk price have apositive impact on profit, while production cost has a negative impact.