Effect Of Pig Welfare Before Slaughter On Pork Quality

Effects of different transport time, rest time before slaughter, andways of slaughter on pork quality (meat color, total volatile basicnitrogen, pH, aerobic bacterial count) were researched. 150 crossed pigsof similar body weight (100kg) were randomly assigned to two experiments.In experiment 1, effects of different transport time and rest time beforeslaughter on pork quality were researched, the trail was designed to 6treatments, 10 repeats per treatment. In experiment 2, effects of showerand ways of slaughter on pork quality were researched, designed to 9treatments, 10 repeats per treatment. The results were as follows:①On the condition of the same rest time, the pork quality (meatcolor, total volatile basic nitrogen, pH, aerobic bacterial count) ofslaughter after transported for 8-12h was lower than the pork quality oftransported for 4-8h(P＜0.01).②Of the same transport time, the pork quality (meat color, totalvolatile basic nitrogen, pH) of slaughter after resting for 12-24h isobviously better than slaughter at once after transport(P＜0.01).③Relative to the way of slaughtering with low voltage and hangingalive, way of slaughtering with high voltage is better to make sure porkquality(P＜0.01) (meat color, aerobic bacterial count).④Showering pigs before slaughter can improve pork quality(P＜0.01), while rest for 5min after shower before slaughter can be betterfor pork quality (P＜0.01) (meat color, total volatile basic nitrogen, pH,aerobic bacterial count).According to this experiment, trail of short transport time, long resttime before slaughter, high voltage and showering is better than the trailof long transport time, short rest time before slaughter, low voltage andno showering for the quality of pork, which improves the animal welfare.