engleski

Factors discriminating between different pork quality conditions

The present study was carried out on 119 randomly chosen carcasses of barrows, slaughtered at approximately 100 kg live weight in three abattoirs form east Croatia. Main meat quality traits were measured: pHi, pHu, CIE-L* and drip loss by compression and bag method. Among investigated drip loss predictors the highest significance was found for WHC and pHu values (p<0.05). Values of pHi and CIE-L* were not statistically significant. Accuracy of classification by discriminant analysis was 58.93% correct in the class with excessive drip loss and 65.08% in the class characterized as non-exudative. Overall discrimination was approximately 62% correct. More variables, value other than 5% as threshold for exudative meat and a larger sample are suggested for the improvement of model accuracy. Two classes of samples were formed by discriminant analysis (exudative and non-exudative). Between the classes significant differences were found for pHu values and WHC (p<0.05). When pHu and WHC class means for exudative group were individually used as criteria for subsequent differentiation into meat quality groups, around 60% and 61% of the samples, respectively, were accurately characterized as exudative or non-exudative.

pork ; meat quality traits ; discrimination classes

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