Just like us, cows have a good chance to stay healthy if they eat the right food and get plenty of exercise and rest. But like us, cows can feel poorly - and they won't be able to tell us if they are. That's part of why a herd health plan is so important for dairy farmers.

Farm vet Matt Dobbs says: A health plan is an agreement between the farmer and vet showing how we're going to manage the cows to make sure that they're healthy and well cared for. It covers every topic from how we're going to house the cows to how we're going to feed them, right through to any preventative strategies such as vaccinations and ways that we're going to treat and look after our cows." Watch our 'moovies' to hear more from Matt.

The health plan is reviewed at least once a year.