Its all from the desert

It is just remarkable what Al Safi has done - more so it is outregous also.The world's largest integrated dairy farm, Al Safi, is located in the Saudi Arabian desert, 60 miles (100 kilometers) southeast of Riyadh. The dairy is a result of the 1973 Arab oil embargo against Western nations. During the embargo, the Saudi royal family realized their nation couldn't rely on food imports from other countries. Vowing the kingdom would become self-sufficient, the royal family set out to revolutionize agriculture in the mostly arid country.
Through government subsidies, Saudi farmers were able to import irrigation equipment to grow grain. They also imported dairy cattle from Europe, Canada, and the United States. Al Safi, which is owned by the royal family, quickly became the largest dairy in the country and then the world.
Al Safi has more than 29,000 head of Holstein-Friesian cows, which produce 122,000 gallons (462, 000 liters) of milk a day, supplying 33 percent of the kingdom's dairy market. These cows survive in temperatures that drop to freezing in the winter and soar to 115º Fahrenheit (46º Celsius) in the summer. There's no grass in the desert for them to eat, so all their food is grown on the farm. The cows' water is pumped from 6,000 feet (1,800 meters) underground. Each cow uses about 30 gallons (100 liters) a day for drinking (and cooling off) via sprinkler systems in the shed.