I know that some of the popular jumping sires of old such as Cottage & Deep Run sired huge books of mares, but now this is common place with stallions of both codes. In the old days the jumping mares were bred to be jumpers & some had a bit of hunter way back. The horses would have mainly been stores & not worked until they were four.
Now we are seeing more failed flat racers than ever, sired by stallions who have bigger books than the likes of even Deep Run could have dreamt of. Also, though I know posters on here disagree with me, the obsession with some American bred stallions like Northern Dancer & Mr Prospector has wakened the breed. I don’t think there is a stallion at Coolmore that isn’t crossed to him for instance. Look at horses in the paddock, so many look like him especially those with a washy tail, which the line seems to throw.
This was bound to go all wrong, & we are reaping the rewards of overbreeding now.
Of course not every fatality is inbred, so there must be some other factors too. I wonder how many foals & yearlings are finished on limestone pasture these days?
Could interval training be a factor?
The breed is becoming weak.