Changes

The prevalence of equine gastric ulceration has increased over the last century.<ref name="Sandin">Sandin, A, Skidell, J, Haggstrom, J, Nilsson, G (2000) ''Postmortem'' findings of gastric ulcers in Swedish horses older than age one year: a retrospective study of 3715 horses (1924–1996).  ''Equine Vet J'', 32(1):36-42.</ref> In a retrospective study of 3715 Swedish horses, ulcers were most often found in the squamous mucosa along the ''margo plicatus'', then the glandular body, proximal squamous mucosa and antrum.<ref name="Sandin">Sandin, A, Skidell, J, Haggstrom, J, Nilsson, G (2000) ''Postmortem'' findings of gastric ulcers in Swedish horses older than age one year: a retrospective study of 3715 horses (1924–1996).  ''Equine Vet J'', 32(1):36-42.</ref>  For the squamous region, reported prevalences are:

The prevalence of equine gastric ulceration has increased over the last century.<ref name="Sandin">Sandin, A, Skidell, J, Haggstrom, J, Nilsson, G (2000) ''Postmortem'' findings of gastric ulcers in Swedish horses older than age one year: a retrospective study of 3715 horses (1924–1996).  ''Equine Vet J'', 32(1):36-42.</ref> In a retrospective study of 3715 Swedish horses, ulcers were most often found in the squamous mucosa along the ''margo plicatus'', then the glandular body, proximal squamous mucosa and antrum.<ref name="Sandin">Sandin, A, Skidell, J, Haggstrom, J, Nilsson, G (2000) ''Postmortem'' findings of gastric ulcers in Swedish horses older than age one year: a retrospective study of 3715 horses (1924–1996).  ''Equine Vet J'', 32(1):36-42.</ref>  For the squamous region, reported prevalences are:

*Racehorses 70-100% (Hammond et al 1986, Vatistas et al 1994 and 1997, Murray et al 1996) (3-11 in Sanchez)

*Racehorses 70-100%<ref name="Hammond">Hammond, C.J, Mason, D.K, Watkins, K.L (1986) Gastric ulceration in mature Thoroughbred horses.  ''Equine Vet J'', 18(4):284-287.</ref><ref>Vatistas, N.J, Snyder, J.R, Carlson, G, ''et al'' (1994) Epidemiological study of gastric ulceration in the thoroughbred racehorse:202 horses 1992-1993.  ''Proc Am Assoc Equine Pract'', 40:125-126</ref><ref>Murray, M.J, Schusser, G.F, Pipers, F.S, Gross, S.J (1996) Factors associated with gastric lesions in thoroughbred racehorses.  ''Equine Vet J'', 28:368-374.</ref>

*Racehorses in active race training 80-90% (incidence 100%) (Vatistas 2 1999)

*Racehorses in active race training 80-90% (incidence 100%)<ref name="Vatistas 2">Vatistas, N.J, Sifferman, R.L, Holste, J, Cox, J.L, Pinalto, G, Schultz, K.T (1999) Induction and maintenance of gastric ulceration in horses in simulated race training.  ''Equine Vet J Suppl'', 29:40-44</ref>

*Show horses 58% (McClure et al 1999) (12 in Sanchez)

*Show horses 58% (McClure et al 1999) (12 in Sanchez)

*Ponies 78% (MacAllister et al 1982)

*Ponies 78% (MacAllister et al 1982)