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ABSTRACTThe objective of this study was to determine the relationship between pH and fresh pork quality. Pigs (n = 988) were harvested at one plant on 6 days over a 2‐month period. Loin pH was recorded at 45 min, and 3 and 24 h postmortem. Loins (n = 840) were classified based on ultimate pH into four categories: low (≤5.44), low/normal (5.45–5.74), high/normal (5.75–6.04) and high (≥6.05). A majority of loins (53.3%) were classified as low/normal, while only 1.3% were classified as low. It was confirmed that 24 h pH was the best predictor of key meat quality traits because 45 min and 3 h pH accounted for less than 5% of the total variation in quality traits. The pH at 24 h postmortem is the best predictor of quality of the three time points tested in this population, because it accounted for over 10% of the variation in several quality attributes....
Sixty-four gilts from a commercial hybrid line were selected based on rendement napole (RN) genotype and live weight to evaluate the effects of feeding a lysine-deficient diet and feed withdrawal prior to slaughter on fresh pork quality. Glycolytic potential was measured and the bimodal distribution was utilized to predict RN genotype. Diets containing 4.8 (deficient) or 6.4 g/kg lysine were fed for...
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