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Alteration of porcine skeletal muscle myoglobin by the environment*

Published online by Cambridge University Press:  27 March 2009

N. W. Thomasf  and
M. D. Judge
N. W. Thomasf
Affiliation:
Purdue University, Department of Animal Sciences, Lafayette, Indiana 47907
M. D. Judge
Affiliation:
Purdue University, Department of Animal Sciences, Lafayette, Indiana 47907
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Summary

Animals reared in constant ambient temperatures had significantly more skeletal muscle myoglobin than those reared in alternating temperature environments when the humidity was moderate or high. These differences did not exist when humidity levels were low. Comparisons ofthe effect of humidity level in constant ambient temperatures revealed high myoglobin in pigs subjected to moderate as compared to low humidity at 27°C, but humidity effects were nonexistent when the ambient temperature was 21 or 32° C. It is postulated that animals reared in alternating temperatures experienced intermittent and persistent development of tissue hypoxia and, asa consequence, had reduced aerobic metabolic pathways in muscle as compared to animals rearedinconstant ambient temperatures.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 74 , Issue 2 , April 1970 , pp. 241 - 245
Copyright
Copyright © Cambridge University Press 1970

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