Correlation between Respiratory Rate and Muscle Quality of Fresh Rainbow Trout (Oncorhynchus mykiss)

In order to investigate the correlation between respiratory rate and muscle quality in fresh rainbow trout, the changes of muscle quality corresponding to different respiratory rates were analyzed. The contents of lactic acid, glycogen, malondialdehyde (MDA), nucleotide compounds and pressurized water loss rate were measured. The result showed that with the increase of respiratory rate, the content of glycogen decreased, the content of malondialdehyde and nucleotide compounds, the rate of pressure water loss increased. When the respiratory rate increased from 83 to 95 times/min, the lactic acid content increased significantly from 1.46 to 2.37 mmol/g prot (P