With Belted Galloways, this number is 60% due to their smaller bone size and lower body fat percentage (they produce thick pelts in the winter instead of subcutaneous fat to stay warm).
There are many breeds which occupy the same niche as our Belted Galloways, being very strong foragers and efficient converters of grass into meat owing to their evolution in harsher areas.
The first Ms Celerier heard about the new regulations was when one of the Belted Galloways she sent to the local abattoir for slaughter came back already cut up and in vacuum packs, instead of as a whole carcase, ready for hanging for 28 days at the farm's butchery.
All of the beef sold in the shop is from the Blagdon farm's herds of Belted Galloways or Red Polls, and if extra cattle are needed they are sourced from other traditional beef herds in Northumberland that are well known to Ms Celerier.
Normally prized for their high quality beef, belted Galloways from the Gilmonby herd in Barnard Castle are now playing a crucial role as eco-friendly lawnmowers.
Closer to home, Belted Galloways from the Gilmonby herd are being used to graze an ancient oak woodland in the Derwent Valley and they have even been sent to munch on the unique wild meadows at Hannah Hauxwell's former farm.
These are some of the author's Belted Galloway
cattle, also an endangered species.