Thermoregulation in horses undergoing three different post exercise cooling methods / Termorregulação em cavalos submetidos a diferentes métodos de resfriamento pós-exercício

AUTOR(ES)

Mariano Etchichury

DATA DE PUBLICAÇÃO

2008

RESUMO

This study was aimed to compare two alternative cooling methods in horses with hyper cooling method, used usually spot horses. Alternatives method consists in tepid water bath of the entire body, and the use of ice in the limbs. The need of alternatives methods of cooling post exercising horses is based in the huge amount of competitors eliminated from endurance rides in Brazil, related to high humidity and hot environments. Nine Standarbred horses were used, three gelding and six mares, aging 8±2,5 years and weighing 462±33 kg, in two experimental sets, performed in May and in July, during four days each, in a cross over experimental design. Horses were exercised in a planned schedule for 30 minutes, after this were placed in a climatic chamber, were treatments were applied. Heart rate, respiratory rate, rectal temperature, sweating, neck skin temperature, thorax skin temperature, croup skin temperature, auricular temperature and tail skin temperature were measured for comparison. Time used in measurements were pre-exercise, immediately post exercise without cooling, 5, 10, 15 and 20 minutes post exercise with cooling, and 5-10 minutes post cooling. Data was processed using linear regression test, and means at each time were compared using T test. Significant difference (p<0,05) was detected in neck skin temperature, thorax skin temperature and croup skin temperature in both experimental sets, and in auricular temperature in May set, although this difference appeared only during cooling treatments. At the end of the test, in minute 30, no difference among treatments were detected in any measurement at any experimental set. Both alternative cooling methods here proposed made no difference in post exercise body cooling terms, when compared with hyper-cooling method, at minute 30 of the test.

ASSUNTO(S)

thermoregulation calor exercício eqüinos resfriamento hot environment termorregulação cooling method equine exercise

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