NEW DELHI: Mother Diary has hiked the price of cow milk by Rs 2 per litre from Friday in Delhi and the National Capital Region (NCR). The cow milk variant will now be available at Rs 44 per litre, as against Rs 42 earlier.According to an official, the prices of the cow milk variant effective from September 6 are Rs 23 for 500 ml pack and Rs 44 for one litre pack. The prices of other milk variants remain unchanged. The leading milk supplier said that the retail price of cow milk has been hiked since the company is shelling out more to the farmers to procure raw milk. With Mother Dairy increasing prices, it is likely that other milk suppliers such as Amul and Parag might also follow suit.