Purpose To study the effects of fattening modes on the growth, carcass and meat quality of Diqing Tibetan pigs, an ideal farming method was selected.
Method The fattening experiments were carried out in two ways: standardized fattening on the farm and stocking + supplementary feeding, then the growth traits, carcass traits, body composition, meat quality and muscle chemical composition were measured.
Result The average daily gain of the Diqing Tibetan pigs in the standardized fattening group was 53.29% higher than that of the stocking + supplementary feeding group (P<0.01). Compared with the stocking + supplementary feeding group, the skin rate and bone rate of the standardized fattening group decreased by 38.76% (P<0.05) and 32.85% (P<0.01), respectively, and the fat rate was increased by 26.61% (P<0.05), the stomach weight rate, small intestine length, small intestine weight, and large intestine weight in the standardized fattening group reduced by 27.93%, 15.41%, 56.20%, and 34.86% (P<0.01), respectively, and its visceral fat rate and abdominal fat rate were increased by 147.94% (P<0.01) and 46.59% (P<0.01), respectively. In terms of meat quality, compared with the stocking + supplementary feeding group, the water loss rate, the score of meat color and intramuscular fat content of the standardized fattening group reduced by 18.40% (P<0.01), 18.59% (P<0.01) and 46.96% (P<0.01), while the crude protein content was increased by 10.45% (P<0.05). Other meat quality indexes were not significantly different between the two groups (P>0.05), including pH, the score of marbling, cooked meat percentage, moisture content, dry matter, fat, crude ash.
Conclusion The standardized mode of fattening Diqing Tibetan pigs in the farm can increase the growth rate, reduce the rate of skin and bone, increase the fat deposits on the back and abdomen, improve the muscle water retention performance and crude protein content, and improve meat production performance and meat quality.
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