The milk of a Jersey cow has the highest fat content of all the breeds. The cow weighs between 350-550 kg. A calf weighs 20-35 kg at birth. Jersey is usually cream-colored, bright or brown. Ribs and hips are clear, and the legs are short and stable. Over time Jersey has kept focus on a high production of butterfat and milk protein. Annual milk yield from 5000 to 8000 kg / year, protein content 4, 13 %, fat content 6, 5 %.