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The disease is almost always seen in grazing animals, although there are isolated reports of the condition occurring in stabled horses. Grass sickness is most frequently seen in young horses aged between two and seven, and is particularly prevalent during April, May and June, and later in the autumn, after a spurt of grass growth.
Obese horses are usually fed hay at a level of 1.5% ideal body weight, which may be dropped to 1% of body weight if no weight loss is realized after 30 days. However, feeding less than 1% of body weight in forage is not recommended, since secondary problems such as hyperlipemia and stereotypies can occur, and insulin resistance may actually be ...
Pituitary pars intermedia dysfunction (PPID), or equine Cushing's disease, is an endocrine disease affecting the pituitary gland of horses. It is most commonly seen in older animals, [ 1 ] and is classically associated with the formation of a long, wavy coat ( hirsutism ) and chronic laminitis .
Equine multinodular pulmonary fibrosis is a chronic lung disease of horses. There is evidence that the disease is caused by infection with a gammaherpesvirus , equine herpesvirus 5 . The disease affects usually adult horses reducing the ability to exercise as a result of the formation of nodular lesions in the lungs.
Equine polysaccharide storage myopathy (EPSM, PSSM, EPSSM) is a hereditary glycogen storage disease of horses that causes exertional rhabdomyolysis.It is currently known to affect the following breeds American Quarter Horses, American Paint Horses, Warmbloods, Cobs, Dales Ponies, Thoroughbreds, Arabians, New Forest ponies, and a large number of Heavy horse breeds.
The same should be done when cooling down. Ensure that the horse is cared for, for an issues to the immune system and allowed to recover before continuing training. [1] A horse ideally should receive exercise once, or possibly twice a day, every day, to prevent the recurrence of ER. If possible, avoid breaks in the horse's exercise schedule. [1]
The disease has a similar cause to Hirschsprung's disease in humans. A mutation in the middle of the endothelin receptor type B ( EDNRB ) gene causes lethal white syndrome when homozygous . Carriers, which are heterozygous —that is, have one copy of the mutated allele , but themselves are healthy—can now be reliably identified with a DNA test .
The disease was first reported in 1996. [4] The first cases were found in Fell ponies, and the disease was initially termed "Fell pony syndrome." [1] The disease appeared to have a genetic component, and, after hereditary diseases known to affect other horse breeds were investigated, it was concluded that this was a newly identified disease. [1]