Essen-Gustavsson, Birgitta
- Institutionen för kliniska vetenskaper, Sveriges lantbruksuniversitet
Sammanfattning
In a previous study of young Norwegian–Swedish coldblooded trotters (NSCT), aged 17–24 months, a high proportion (>30%) of type I fibres in the gluteus medius was found in 33 of 141 horses. These findings were surprising and the purpose of the present study was to find an explanation for the high type I fibre proportion in these horses. Possible explanations might be an inaccuracy in the procedure of analysing the biopsy sample, inaccuracy in the method of sampling or a muscular disorder in these individuals. Further, the high type I fibre proportion might be age related. The accuracy of the procedure for determination of the fibre composition from a biopsy sample was tested by analysing the same biopsy sample at two different occasions in nine horses. Four of the nine horses had high type I fibre proportions on both occasions and the five others had proportions within the expected range on both occasions. The repeatability of the procedure was tested by an agreement analysis, where the agreement index (AI) is calculated. This analysis revealed an AI of 0.70, where an AI >0.5 shows a good repeatability. Eight of the nine horses were re-sampled at the age of 3 years. At this age, all horses had type I fibre proportions
Nyckelord
cold-blooded trotters; fibre types; muscle biopsy; repeatability
Publicerad i
Comparative Exercise Physiology
2010, volym: 7, nummer: 2, sidor: 97-101
SLU författare
UKÄ forskningsämne
Medicinsk biovetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1017/S1755254010000279
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/132454