Microscopic structure of Musculus gluteus medius of horses under different training burden
Keywords:
horse, training, biopsy, histochemical structure of musclesAbstract
This paper deals with the histological investigation of m. gluteus medius after biopsy. Three horses of various age and condition were tested. Six years old horse had the thickest muscular fibres (65.97 microns). The second and the third horse (15 and 7 years old, respectively) had the similar thickness of the muscular fibres (58. 24 microns and 58. 70 microns). These horses were discarded from the training. The first and the third horse had al1 three types of fibres in their muscles. The α White fibres were low (6.30 % and 5.60 %). The other horse had in the muscles only α Red a β Red fibres. The implication of the prevalence of oxidative fibres (β and α Red) is a result of differential training on the organism. The third horse had the biggest thickness of the fat cells (42.89 microns). The other two horses had comparable thickness of the fat cells (36.00 microns and 36.86 microns, respectively).
