Piggery
You do not require any Govt clearances to start one - if your farm/land is big enough and you're far away from any neighbours who will be disturbed by their noise or hygine conditions.
If you are looking to start one on a modern day technology venture - please consult an expert - probably one from europe / US.
Moreover you need to understand the nutritional requirements & Health management before you invest in a big venture - have a knowlwdgeable Vetenaraian to assist you.
Regards
