In what seems to be a more politically safe option to eradicate the nation of the stray dog menance, Jairam Ramesh made this statement while releasing a book on animal birth control.
According to WHO estimates, 20,000 people in India die due to rabies and there have been reports in certain parts of the country wherein people especially children were attacked and in some extreme cases killed by stray dogs.
If sterilized, the dogs will eventually die out as they will be unable to reproduce.
The other way to do away with stray dogs is- Euthanasia, which doesn't go well with the animal rights activists. However, the response on this move from the activists is still awaited.