eeds, and their crosses were excluded from the study, as were
pregnant and lactating mares, and horses undergoing treatment for medical problems.
While laboratory testing and data analysis are still underway, the research team has already
made some alarming discoveries.
Fifty-one percent of the horses in the study were found to have a BCS greater than 6.
Thirty-two percent of the horses in the study were found to have a BCS of greater than 6 but
less than 8 and 19 percent of the horses were found to have a BCS of 8 to 9.
Ten percent of the horses that had a BCS greater than 6 but less than 8 and 32 percent of the
horses that had a BCS of 8 to 9 were hyperinsulinemic. These findings support the researchers
hypothesis that the rate of overweight and obese horses is greater than the five percent figure
reported in the 1998 NAHMS study.
The study suggests that equine obesity may result from natural grazing behavior instead of the
overfeeding of grains and other feed supplements, which defies conventional thinking on equine
weight matters. The majority of horses examined in the study were fed primarily pasture and hay
with very little grain and concentrate.
Instead of overfeeding of grain and concentrates, the evidence indicates that improved forage
and lack of exercise are the two most common contributing factors in equine obesity.
Thatcher believes this may result from the fact that many pasture forages have been fortified
with the goal of improving weight gain and productivity of cattle and other food animals, with
little thought given to how these forages might affect horses, which often share the same types
In addition, the majority of the horses studied were under-exercised. They were left on
pastures to eat, but did not have an actual exercise regimen. Page: 1 2 3 4 5 Related medicine news :1
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