Interval exercise alters feed intake as well as leptin and ghrelin concentrations in Standardbred mares
| Autor: | M. E. Gordon, N.R. Liburt, C. L. Betros, HC Manso-Filho, Jennifer Streltsova, S. Bokman, Kenneth H. McKeever |
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| Rok vydání: | 2006 |
| Předmět: |
Leptin
medicine.medical_specialty Time Factors Hydrocortisone Peptide Hormones medicine.medical_treatment media_common.quotation_subject Peptide hormone Physical Conditioning Animal Internal medicine medicine Animals Horses Stomach Ulcer media_common Cross-Over Studies business.industry Insulin Horse Appetite General Medicine Crossover study Ghrelin Endocrinology Exercise Test Female Horse Diseases Energy Intake business medicine.drug |
| Zdroj: | Equine Veterinary Journal. 38:596-605 |
| ISSN: | 0425-1644 |
| DOI: | 10.1111/j.2042-3306.2006.tb05611.x |
| Popis: | Summary Reasons for performing study: Horses in training tend to become inappetant; however, the mechanism responsible for this training-induced inappetance is not known. Hypothesis: Training and/or ulcers alter the feed intake (FI) and hormonal and/or biochemical (active ghrelin, leptin, glucose, insulin and cortisol) responses to acute high intensity exercise. Methods: Eight Standardbred mares underwent 3 interval exercise tests (IET) and 3 parallel control tests (CON) before (IET1) and after 8 weeks of training (IET2) and after treatment for gastric ulcers (IET3). Plasma samples were taken before (0 min), during (last 10 sec of velocities eliciting 40, 100 and 20% VO2max), and after (30 min, 60 min, 24 h) exercise (EX) or CON tests for RIA and colorimetric measurement of the concentrations of the above parameters. Samples were also collected before and after feeding. Horses were trained at a work intensity of 70% HRmax for 30 min/day, 5 days per week with FI measured daily. Results: There were no changes (P>0.05) in any variable during the parallel control trials. However, there was a mismatch between FI and digestible energy (DE) requirements (P |
| Databáze: | OpenAIRE |
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