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Showing 1 to 20 of 55 for “"thoroughbred"”.
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Glycemic Response in Thoroughbred Mares
The objective of this study is to determine if fat as an energy source, and fiber in a pasture supplement will be beneficial when compared to a concentrate high in sugar and starch. In the first experiment, 12 pregnant and lactating mares were used in three different glycemic response tests to …
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Fat metabolism in the exercising thoroughbred horse
The thoroughbred horse has been selectively bred for speed and has a high capacity for carbohydrate metabolism. The following series of studies investigated the relative contribution of fat and carbohydrate to energy production during exercise of varying intensity. Furthermore the work assessed the …
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Carnosine metabolism and function in the thoroughbred horse
Thoroughbred horseracing involves high-intensity exercise characterized by the production and accumulation of hydrogen (H<sup>+</sup>) ions within the skeletal muscles. Without a system for maintaining acid-base balance the consequential accumulation of H+ ions within the working muscles would …
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Exercise-Associated Cardiac Rhythm Disorders in Thoroughbred Racehorses
… The most clinically relevant rhythm disorders in Thoroughbred racehorses (TBs) are atrial fibrillation (AF), which typically causes poor performance, and fatal arrhythmias which precipitate sudden cardiac death (SCD). These rhythm disorders are also important in human athletes. The horse has a …
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Vitamin A depletion and repletion in thoroughbred horses
… was adapted for use in the horse. The horses (45 Thoroughbred mares) were divided into three diet groups: pasture and hay only (PH); pasture, hay and vitamin A-free concentrate (PHC); and hay and vitamin A-free concentrate (HC). The mares, as well as their foals, were assessed for vitamin A status …
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METABOLIC CHARACTERISTICS AND SUSCEPTIBILITY TO LAMINITIS IN MORGAN AND THOROUGHBRED HORSES
… In practices limited to either Quarter Horses or Thoroughbreds (the two most common breeds in the United States), the Quarter Horse was found to have an incidence of laminitis eight times greater than the Thoroughbred, and the recovery rate of the Quarter Horse is 1.3 times higher. Thoroughbreds, …
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Vitamin E Status of Thoroughbred Horses and the Antioxidant Status of Endurance Horses
… in horses to a limited degree but not in grazing Thoroughbreds, thus the MARE Center gave me the opportunity to study vitamin E in Thoroughbred mares and foals. Middleburg is located in the Blue Ridge Mountains on Northern Virginia close to the site of one of the toughest endurance races in the …
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Effects of Diet and Probiotic Supplementation on Stress during Weaning in Thoroughbred Foals
… of diet and probiotic supplement on stress in Thoroughbred foals at weaning. Twenty foals, whose dams were paired by age and breeding date, then randomly assigned to one of two diets prior to parturition, were used. Two groups were maintained on mixed grass pastures and fed supplements, one …
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Aspects of respiratory function during exercise in the thoroughbred horse in health and disease
… the investigation of respiratory disease in the Thoroughbred horse. Horses were exercised on a treadmill whilst respiratory flow rates were recorded using ultrasound flow transducers, respired gas concentrations measured by mass spectrometry and blood gas analysis performed. The exercise test …
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The effect of loading upon hoof wall growth and hoof shape in the Thoroughbred foal
The hoof wall is adapted to take most of the weight-bearing of the foot and is anisotropic and homogeneous. Foals appear to be born with symmetrical paired feet which by maturity are frequently unequal in angle and width. They stand within minutes of birth subjecting the hoof wall to loading. Hoof …
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The influence of month of birth on growth and development of thoroughbred foals and yearlings
Thirteen Thoroughbred farms in Virginia provided 260 horses for the study of growth patterns of horses from birth to July of the yearling year. Measurements included heart girth, wither and hip height, body length, chest width, knee to ground length, cannon bone circumference and body weight, as …
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Long Term and Short Term Changes in Leptin, Insulin and Glucose in Grazing Thoroughbred Mares
The objective was to evaluate the insulin-leptin interactions in grazing mares and their impact on aspects of reproductive function using a series of four studies. Fourteen mares were first examined, 10 grazing and 4 confined to stalls in four 22-h studies in April, August, October (2005) and …
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Glucose regulation in Thoroughbred weanlings: Regulation by insulin, growth hormone and insulin-like growth factor-I
… glucose metabolism in young horses. Twelve Thoroughbred foals were raised on pasture and supplemented twice daily with a feed high in either sugar and starch (SS) or fat and fiber (FF). As weanlings (age 199 ± 19 d, weight 274 ± 18 kg), the subjects underwent a modified frequent sampling …
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Effects of hypervolemia on arterial oxygenation in thoroughbred horses performing exercise simulating the second day of a 3-day equestrian event
… et al. 2003). Studies were carried out on 7 Thoroughbred horses under control and hyperhydration conditions. Hyperhydration (and hypervolemia) was induced by administering NaCl (0.425 g/kg) via nasogastric tube 5 hours pre-exercise followed by free access to water. Two sets of experiments …
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Genetic exploration of exercise associated sudden death in racehorses
… been largely unexplored in horses.Hypothesis: Thoroughbred racehorses with variants in ion channels and other arrhythmogenic genes are predisposed to a higher risk of EASD. Specific Aim1: This study aimed to identify causative positional candidate regions for EASD in Thoroughbred racehorses. …
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An Investigation of Humeral Stress Fractures in Racing Thoroughbreds Using a 3D Finite Element Model in Conjunction with a Bone Remodeling Algorithm
The humerus of a racing horse Thoroughbred is highly susceptible to stress fractures at a characteristic location as a result of cyclic loading. The propensity of a Thoroughbred to exhibit humeral fracture has made equines useful models in the epidemiology of stress fractures. In this study, a …
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Identifying nutritive, physical and volatile characteristics of oaten and lucerne hay that affect the short-term feeding preferences of lactating Holstein Friesian cows and Thoroughbred horses.
… hays for lactating Holstein Friesian cows and Thoroughbred horses. The project aimed to (i) quantify preference values for a large number of oaten hays with dairy cows and horses and a similarly large number of lucerne hays with horses only, and (ii) develop predictive equations for animal …
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