Although I have given the title as animal husbandry, I would like to keep it simple by explaining the importance of farm dairy.  One will be able to obtain milk and milk products from a dairy farm.  
 

In the earlier days farm dairy was a means of subsistence adopted my 60 to 70 percent of the society. Most of the houses or families in a village indulged in cattle breeding either for trading or for domestic purposes. But as times changed, farm dairy became a primary sector occupation. But even today there are several countries like New Zealand and Australia where people run farms exclusively for their domestic needs. And then there are aristocratic farmers and businessmen who are making millions out of large scale farm dairy produces. Animal husbandry has always been a rewarding and risk free investment. Therefore, even today, several dairy product manufacturing or processing companies are investing in farm dairy. By this way they reduce their cost of production as they need not depend on a third party for their raw material needs.
 

If you are a primary sector investor, then securing your investments in dairy farming and allied activities can yield you guaranteed returns on a permanent basis. Profits in such sectors are not much affected by crashing capital markets or fluctuating currency values. Yet, most of us shun away from such ideas.  But if you spend some time thinking about the niche from an economic perspective, you will realize the long term rewards derivable by investing your time and money on a dairy farm.
 

Well, it might seem simpler on writing.  However, if you are interested in setting up a farm dairy, then you must pay attention to lot of other features too.  For example, you must have a good understanding of the dietary habits of cattle.  Grass and other types of vegetation are the primary source of food for these animals. You should invest some time in learning about the requisite facilities, farm equipments, helpers and food supplies before purchasing the cattle. There are specialized agents in this field who can help you set up your first farm. You may start finding details of such agencies or experienced dairy farmers through online sources.
 

Always clear the basics – you must choose cows of the very best breeds.  According to the breed, the output of milk might vary.  At this stage, you will have to research on the best cattle breeders in your locality (or preferable in your state).  Contact them and they will list out the breeds available with them, along with the expected quantity of milk. Make it a point to visit the farm dairy to inspect the cows in person! Anyone with basic levels of IQ will be able to distinguish between sick and healthy cows.