One farmer on social media calls the claim "bull".
"Plenty of cows in our herd over 10 yrs," wrote the cranky cocky.
A Fairleigh farmer agrees, saying it's the same in their herd with plenty of older cows.
Another farmer opined that this would be the case right across the dairy sector, giving two good reasons: "Two things that help the longevity of livestock are farmers' passion for their animals and modern technology."