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Senior Jockey
The calcium -phosphorous ratio is the key along with the acidity caused by concentrate feeds. In a nutshell extra acidity in the bowel inhibits calcium absorption which may cause calcium depletion from bone.( The incidence of ulcers in racehorses could easily become the welfare issue to get racing banned)What is his theory behind modern feeding? I was of the opinion that the old fashioned "bran mash" on a Saturday after work in preparation for a non-active Sunday actually was detrimental due to the bran altering the calcium phosphorus ratio and therefore leading to weaker bone density?
On the other hand adding calcium to the diet ,and it has been increased quite a bit in the last forty years , leads to osteopetrosis which causes bone to fracture /shatter due to being too dense.
Bone has to flexible to a degree: not too much and not too little.
Apparently a correct foal diet gives the foal healthy gut microbes that last through it's life and leads to more success than one that hasn't the proper microbes.
As Granger says, my buddy has a patented oat balancer which gives mares,
foals and youngsters the best start bowel health wise.
Results in USA racehorses , primarily claimers has given those old stagers a "bowel boost " and feel good to outrun their previous form.
Professor Lennart Krook , who performed the post mortem on Ruffian years ago was convinced her fracture was diet related.