Effect of a long-term high-energy diet on cardiovascular parameters in Shetland pony mares.
J Vet Intern Med
; 35(5): 2427-2436, 2021 Sep.
Article
en En
| MEDLINE
| ID: mdl-34350640
ABSTRACT
BACKGROUND:
Changes in cardiovascular parameters, including blood pressure (BP) and cardiac anatomical dimensions, are an inconsistent feature of the equine metabolic syndrome. The order in which these changes arise is unknown.OBJECTIVES:
Determine the order in which EMS-associated changes in cardiovascular parameters arise. ANIMALS Twenty Shetland pony mares.METHODS:
High-energy (HE) diet mares were fed 200% of net energy requirements for 1 (n = 3) or 2 (n = 7) consecutive diet-years, with 17 weeks of hay-only between years. Noninvasive BP measurements and echocardiograms were performed during both years. Resting 24-hour ECGs and measurements of autonomic tone (splenic volume and packed cell volume [PCV]) were performed at the end of diet-year 1. Results were compared to control mares receiving a maintenance diet for 1 (n = 7) or 2 (n = 3) consecutive years.RESULTS:
In year 1, HE mares had significantly higher values than control mares for mean relative left ventricular wall thickness (P = .001). After 2 diet-years, mean systolic (P = .003), diastolic (P < .001) and mean arterial BP (P = .001), heart rate (HR; P < .001), and mean left ventricular wall thickness (P = .001) also were significantly increased in HE compared to control mares. No pathological arrhythmias or differences in splenic volume or PCV were detected. CONCLUSIONS AND CLINICAL IMPORTANCE Ingesting a HE diet first induced minor changes in BP, and progressed to left-sided cardiac hypertrophy in Shetland pony mares. These findings are of interest given the increasing incidence of obesity in horses.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Síndrome Metabólico
/
Enfermedades de los Caballos
Límite:
Animals
Idioma:
En
Revista:
J Vet Intern Med
Asunto de la revista:
MEDICINA INTERNA
/
MEDICINA VETERINARIA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Países Bajos