He said that although he was “deeply shocked and disturbed” by the footage, he understood that officers had a responsibility to protect the public.
Mr Barton added: “The NFU is working with Surrey police, and other forces across the country, to help ensure this situation doesn’t happen again.”
The video showed a police car hitting the calf on Friday night on a residential street in Staines-upon-Thames.
On Sunday, the cow’s owner said the animal was recovering.
And according to a report in The Sun, external, the cow was “back on her feet”.