The Dairy Business Math
I was camping in a forest. Nearby villagers used to come to graze their cows. I got chatting with one of them. He explained the math of dairy. Here it follows for 1 cow: Daily milk yield: 8 litres @ 20 rs per litre: 160 rs = 4800 rs per month Cow dung: 0.5 kilta per day @50 rs per kilta = 25 rs = 750 rs per month. Daily concentrate/Feed cost: 2kg@20 rs per kg, 40 rs =1200 rs per month Fodder cost: almost nil in summers. About 4000/ in winters if purchasing. Otherwise you can get grass in exchange for cow dung. Will reduce your cost. Lets assume 1500 rs per month. Labour cost: 2000 (approx) Misc expenses: 500 rs Remove 3 months of milk production when the cow is not lactating. Ideally it is 2 but account for lower milk production due to dry grass in cold winters. 4800*3/12 = 1200 rs per month Total = 4800+750-1200-2000-1500 -500-1200= -850. All in all a small loss. Here comes the optimizaton. Sell milk products@40 rs per litre. +4800 -1200 =3600 Make vermicompost: +1000 rs ...