I considered that, surprisingly enough since I had not had my first cup of coffee when I typed all that verbage. I decided that the subsidies are equivalent to

I considered that, surprisingly enough since I had not had my first cup of coffee when I typed all that verbage. I decided that the subsidies are equivalent to greasing the wheels in that they provides an incentive for people to choose the path that you wish them to choose in absence of the subsidy. If you have a goal of eliminating brucellosis from your native herds and you want it to happen in as short a time period as possible then you design a program that rewards people for taking quick action. The program controls can also do useful things like set a time limit on the availability of the subsidy so that people can be helped to understand that if they hesitate to act they will lose out on the benefit. It should also have controls in place to identify and sanction bad actors so that anyone in a position to falsify data will know in advance that damaging sanctions exist and that enforcement will be a program priority. Veterinarians would need to be on board with defrauding the system since they have to sign off on the relevance of the subsidy on a case by case basis. It seems unlikely that someone who has spend such a large part of their life earning that position, a position that will see them able to earn a good living for themselves and their families, would risk losing all of it by falsifying data. It is clear that India has decided that vaccination is a net positive and that the end result is worth the cost since society will win. A subsidy to help those who stand to lose something, even temporarily like the milk output reduction, seems like a great trade.