Not exactly a developing market
I can name a number of players in this market, for both fertility management, robotic milking and general automation, so it's hardly a new opportunity.
Maybe it'll produce a new opening for the likes of Google? Will cow collars suddenly start to play advertisements for a feed company?
The cows? Well so long as they get fed, access to the cow brush and generally pampered they'll be happy if they're connected or not. Saying that, the state of some of the "broadband" in rural areas of the UK I'd say not.