Lasix Encourages Racehorse Doping in America

The Florida Derby racehorses will be injected with two performance enhancing drugs before heading to the paddock for their derby run, prednisolone and Lasix. Both prerace drugs are allowed by the state racing regulators, who have become puppets of the trainers' lobby. Raceday injections are the root of all the current doping troubles in America. The state racing jurisdictions, all of them, have chosen to set the example of allowing horses to be injected intravenously with performance enhancing drugs shortly before racing. This practice of legal doping has created an untoward atmosphere of generalized racehorse doping, as we are seeing. Raceday and day before medication has to be eliminated if progress protecting the health and welfare of racehorses is to advance.
A strict policy of not allowing horses to be injected with drugs in the days before and the day of racing is the international standard. Where raceday injections are not allowed, racing is 4X safer for the horses, and jockeys. In America, horses break down at 4X the rate of horses racing without the pre-race performance enhancers in Asia, Australia, and Europe.
The raceday drug Lasix potentiates breakdowns due to its performance enhancing effect. Lasix also allows for the substandard care of the racehorses. To permit legal doping is to encourage widespread doping. Raceday Lasix (and IV cortisone) are considered doping by the regulators in Asia, Dubai, Europe, and Australia, where racing is safer and horses are better cared for. 
Sid Gustafson DVM
http://therail.blogs.nytimes.com/author/sid-gustafson/

The Principles of Equine Welfare

In Consideration of the Nature of Horses

In consideration of the horse’s nature and behavior horsewomen and horsemen are obligated to provide horses an appropriate environment, proper nutrition, sufficient sociobehavioral circumstances, as well as ethical training and horsemanship modalities. By nature the horse is a grazer of the plains, a social and herd animal, and flighty. Horsemanship and training are best accomplished through behavioral understanding of the horse and facilitation of the horse’s nature, rather than by force or coercion. Horses are best trained in a relaxed, calm state. Training that puts the horse into the flight or sympathetic state generated by fear and contained by ropes or pens is discouraged, and not in accordance with acceptable standards of well being.

Horses graze and walk together 60-70% of the time under natural circumstances, eating and moving from spot to spot independently but within a few meters of the next horse. Stabling should make every effort to accommodate or recreate these long-evolved grazing in motion preferences for proper physiological function and mental health.
Locomotion is essential to physical and behavioral health. Horses require miles of daily walking to maintain proper physiological function. Stabled horses must be brought out of their stalls several times each day to walk and exercise. Hours of daily walking are necessary to fulfill the nature of horses.

Horses require other horses for proper health and prosperity. Horses require the constant companionship of other horses. A horse should seldom be kept alone. Horses being mixed with other horses and expected to share resources should be properly acclimated socially, and be given the required space to adjust to new herds without injury or undue stress. Every effort should be made to provide horses with the social benefit of appropriate companion horses through times of stress and illness.

Horsewomen and men need to appreciate the sensual nature of the horse, and understand the physiological needs of the horse. Horses prefer the open view, and if they cannot be with other horses, they need to see and smell other horses for proper behavioral functioning and responsiveness. 

Water is the most important nutrient, and must be provided in consideration of equine behavioral preferences along with free-choice salt.

Grazing is the preferred and predominant equine activity. Horses did not evolve to metabolize grains and non-structured carbohydrates, or to remain stationary for even short periods of time.

Play and sleep are naturally occurring preferences that require accommodation however horses are housed or stabled, as deprivation results in behavioral deterioration.

Horses are physiologically dependent on shared social grooming and sensual contact companionship. If stabling precludes these preferences from fulfillment, then every effort need be applied to replace or recreate these needs on a daily basis.

These behavioral considerations apply to horses in transport, and for those horses too, however unwanted, man is obligated to provide the proper environment, social functioning, nutrition, medical care, and exercise to sufficiently assure health and comfort.

As to performance, every care and precaution need be taken to avoid exceeding the adaptability of the horse. All of the horse's normal natural sensation should remain fully intact and functional without undue pharmaceutical influence. The horse's metabolic, physical, medical, and behavioral limitations must be monitored by equine veterinary professionals on an intense comprehensive basis.

Dr Gustafson is an equine veterinarian, veterinary behaviorist, and novelist. He helps refine horse and dog training methods to accommodate the inherent nature and behavior of horses and dogs. Applied veterinary behavior enhances optimum health, performance, soundness, contentment, and longevity in animal athletes. Natural approaches to development, training, nutrition, and conditioning sustain equine health and enhance performance. Behavioral and nutritional enrichment strategies enhance the lives of stabled horses. Training and husbandry from the horse's perspective result in content, cooperative horses. DrSid provides equine behavior consultations to help recreate the needs and preferences of horses in training and competition.