The sheep interbreed competition resulted in Mr Marwood being pulled forward with his home bred Charollais ewe, a daughter of the renowned tup Westonvale Jubilee, on its first show outing.
A flock of 200 ewes, half of which are Suffolks and the rest Mules, are run with either a Texel or a Suffolk tup to produce fat lambs.
A farmer buying some replacement breeding ewes or a new tup could not then move his store lambs or suckler calves.
We had 450 sheep, 20 tups and 150 cattle culled and lying in a shed for 10 days before they could go on the pyre.
The farmers in the group have had to coordinate tupping so that fresh lambs, around 70 each month, are available all year round.
Farmers are having to apply for licences in order to be allowed to bring tups to ewes and bulls to cows for breeding.
For the Harpers, the sheep farming year begins in September when they put their tups to their ewes.
I also said that November was the usual time for letting tups go with sheep; this is so, but I should also remind you about the month of October.
Owners of breeding ewes in this position may well have to consider tupping their remaining flock before offering them for sale.
It is a long time, probably beyond the memory of man, since the percentage sold of tups has been as high.