The pH24 of breast muscle was greater in the control birds than the pasture birds. Similar results were also observed by Maribo (1995) and Enfält et al.(1997) in pigs and Castellini et al. (2002) in broilers. A possible reason for this finding could be that grazing increased exercise behavior, which made animals less susceptible to the preslaughter stress, and therefore
reduced metabolism of glycogen (Andersson et al.,1990; Ponte et al., 2008). Moreover, Warriss and Brown (1987) reported that pH was the most important factor in determining cooking loss in porcine muscle. In this study, pasture intake increased cooking loss of breast muscle. The pH24 showed a negative correlation with cooking loss, which is consistent with the results observed by Lu et al. (2007). They reported that ultimate pH exhibited a negative correlation to
cooking loss in Arbor Acres broilers.
The pH24 of breast muscle was greater in the control birds than the pasture birds. Similar results were also observed by Maribo (1995) and Enfält et al.(1997) in pigs and Castellini et al. (2002) in broilers. A possible reason for this finding could be that grazing increased exercise behavior, which made animals less susceptible to the preslaughter stress, and therefore
reduced metabolism of glycogen (Andersson et al.,1990; Ponte et al., 2008). Moreover, Warriss and Brown (1987) reported that pH was the most important factor in determining cooking loss in porcine muscle. In this study, pasture intake increased cooking loss of breast muscle. The pH24 showed a negative correlation with cooking loss, which is consistent with the results observed by Lu et al. (2007). They reported that ultimate pH exhibited a negative correlation to
cooking loss in Arbor Acres broilers.
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