General paper
Muscle adenine nucleotide degradation in the thoroughbred horse as a consequence of racing

https://doi.org/10.1016/0305-0491(92)90015-JGet rights and content

Abstract

  • 1.

    1. Adenine nucleotide (AN) degradation as a result of racing was examined in thoroughbred horses.

  • 2.

    2. Muscle ATP loss in some horses was as great as 50% and in all cases was matched by an equivalent increase in IMP. Mean post-exercise IMP contents varied little with race distance but individual values varied considerably within each race.

  • 3.

    3. Results demonstrate that significant AN degradation occurs in muscle as a result of racing and further indicates that the onset of this process is associated with the fall in muscle pH to values probably less than 6.8.

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