Resumo

PAZMINO GALARZA, Fernando; ROMERO CELLERI, Lenin; GRIJALVA OLMEDO, Jorge  e  ARAGON VAZQUEZ, Eduardo. Chromium suplementation on glucose, cortisol and insulin blood concentrations in sport horses. Rev. Inv. Cs. Agro. y Vet. [online]. 2021, vol.5, n.14, pp.227-236.  Epub 31-Ago-2021. ISSN 2664-0902.  https://doi.org/10.33996/revistaalfa.v5i14.113.

The objective of the study was to determine how chromium supplementation affects the performance of sports horses, for which the possible effects of two sources of organic chromium supplements in athletic horses were evaluated. Fifteen sporting horses were evaluated, Argentina Saddle breed, aged 12 to 15 years, which were fed with concentrate, rye grass and alfalfa hay. They were divided into three experimental groups: i) the control group received a basal diet without supplementation, ii) a basal diet supplemented with 20 mg of chromium in the form of enriched yeast for 30 days; and iii) basal diet supplemented with 20 mg of chromium in the form of chromium tripicolinate for 30 days. After this time, a submaximal stress test was carried out and subsequent evaluation of blood levels of glucose, cortisol and insulin. The statistical analysis of the glucose level did not show significant differences for any of the treatments (P> 0.05), before and after exercise. Plasma cortisol was similar between pre-exercise treatment, but chromium-enriched yeast and organic chromium decreased post-exercise blood cortisol level (P <0.05). Plasma insulin concentration was influenced by chromium supplementation after intensive exercise, the results showed that the blood insulin level was higher in the horses that did not receive supplementation (P <0.01) compared to the groups that received supplementation. Chrome. Organic chromium supplementation in sporting horses did not modify plasma glucose, but the blood concentration of cortisol and insulin did.

Palavras-chave : Chromium; Cortisol; Glucose; Insulin; Tripicolinate.

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