Feed Cows a feast on your birthday, anniversary, when a child is born, etc. It costs $2 to feed a cow a feast. If you want to feed 20 cows, send $40; 50 cows - $100; or feed our whole herd $540. The herd's regular diet is hay, barley porridge, wheat bran, chick pea husks and fresh grass. For the feast we add jaggery and fruit (bananas/guavas/apples according to season).