宰前静养时间对猪肉质性状及液生化指标的影响

Effects of Pre-slaughter Rest Time on Meat Quality and Blood Biochemical Indexes in Pigs

选择体重100-110 kg杜长大商品猪120头,研究不同静养时间对试验猪肉质性状及血液生化指标的影响。结果表明,肉色评分试验4组比试验2组提高3.59%(P<0.01),大理石纹评分1组分别比2组、3组和4组提高24.42%(P<0.01)、55.17%(P<0.01)、39.18%(P<0.01),2组比3组和4组分别提高24.71%(P<0.01)、11.86%(P<0.05);电导率4组比1组和3组分别提高12.83%(P<0.01)、4.94%(P<0.05),2组、3组分别比1组提高10.18%(P<0.01)、7.52%(P<0.01);宰后2小时失水率1组比2组提高27.72%(P<0.05);a值3组分别比1、2、4组提高3.70%(P<0.05)、8.51%(P<0.01)、7.33%(P<0.01),1组比2、4组分别提高4.63%(P<0.05)、3.50%(P<0.05);b值2组比1组和4组分别提高7.57%(P<0.05)、16.38%(P<0.01),3组比4组提高12.41%(P<0.01);PH451组、2组分别比3组、4组提高2.35%(P<0.05)、2.67%(P<0.05)、2.19%(P<0.05)、2.52%(P<0.05);24 h肉色评分3组和4组分别比1组提高2.31%(P<0.05)、2.59%(P<0.05);24 h电导率2组比1组提高19.83%(P<0.01),3组和4组分别比1组提高10.74%(P<0.05)、11.16%(P<0.05);24hL值2组分别比1组、3组、4组提高3.15%(P<0.05)、3.67%(P<0.05)、5.30%(P<0.01);24 h a值4组分别比1组、3组提高4.32%(P<0.01)、6.19%(P<0.01),2组比3组提高3.88%(P<0.05);24 h b值2组分别比1、3、4组提高15.69%(P<0.01)、14.24%(P<0.01)、9.45%(P<0.01);24 h pH 4组比2组提高0.90%(P<0.05)。丙二醛和肌酸激酶试验4组比试验1、2、3组分别提高26.93%(P<0.01)、25.37%(P<0.01)、32.21%(P<0.01)和33.09%(P<0.01)、32.04%(P<0.01)、31.16%(P<0.01);乳酸含量试验3、4组比试验1、2组分别提高103.49%(P<0.01)、73.27%(P<0.01)、96.51%(P<0.01)、67.33%(P<0.01);皮质醇试验1、2、4组分别比试验3组提高60.06%(P<0.01)、61.43%(P<0.01)、55.15%(P<0.01);白细胞介素-1β试验1组比试验2、3、4组分别提高10.80%(P<0.01)、9.70%(P<0.01)、5.53%(P<0.05);肿瘤坏死因子试验1组比试验3组提高12.43%(P<0.01),试验4组比试验3组提高8.40%(P<0.05);结合珠蛋白试验1组分别比试验2、3、4组提高14.81%(P<0.05)、16.04%(P<0.01)、13.02%(P<0.05);多巴胺试验4组比试验3组提高15.38%(P<0.01)。

120 pigswith a weight of 100-110 kg Du Changda were selected to explore the effectsof different resting time on the test pork quality and blood biochemical parameters.The resultsshowed that meat score of group 4 wasincreased 3.59%( P <0.01)compared with group 2.Marbling score of group 1 were increased 24.42%( P <0.01), 55.17%( P <0.01), 39.18%( P <0.01)compared with group 2, 3 and 4 respectively.Marbling score of group 2 were increased 24.71%( P <0.01)、11.86%( P <0.05)compared with group 3 and 4 respectively. Conductivity of group 4 were increased 12.83%( P <0.01), 4.94%( P <0.05)compared with group1 and 3 respectively. Conductivity of group 2 and 3 were increased10.18%( P <0.01), 7.52%( P <0.01)compared with group1 respectively.2h water lossof group 1 wasreduced 27.72%( P <0.05)compared with group 2.A value of group 3 were increased 3.70%( P <0.05), 8.51%( P <0.01), 7.33%( P <0.01)compared with group1 , 2 and 4 respectively.A value of group 1 were increased 4.63%( P <0.05), 3.50%( P <0.05)compared with group 2 and 4 respectively.B value of group 2 were increased 7.57%( P <0.05), 16.38%( P <0.01)compared with group1 and 4 respectively.B value of group 3 wasincreased12.41%( P <0.01)compared with group 4.pH45 valuesof group 1 and 2 were increased 2.35%( P <0.05), 2.67%( P <0.05), 2.19%( P <0.05), 2.52%( P <0.05)compared with group 3 and 4 respectively.24h meat score of group of 3and 4 were increased 2.31%( P <0.05), 2.59%( P <0.05)compared with group1 respectively.24h conductivity of group 2 wasincreased 19.83%( P <0.01)compared with group 1, group 3 and 4 were increased 10.74%( P <0.05), 11.16%( P <0.05)compared with group 1 respectively.24h L value of group 2 were increased 3.15%( P <0.05), 3.67%( P <0.05), 5.30%( P <0.01)compared with group1, 3 and 4 respectively.24h a value of group 4 were increased 4.32%( P <0.01), 6.19%( P <0.01)compared with group 1 and 3 respectively, group 2 wasincreased 3.88%( P <0.05)compared with group 3.24h b value of group 2 were increased 15.69%( P <0.01), 14.24%( P <0.01), 9.45%( P <0.01)compared with group 1, 3 and 4 respectively.24h pH value of group 4 wasincreased 0.90%( P <0.05)compared with group 2.MDA and CK of group 4 were increased 26.93%( P <0.01), 25.37%( P <0.01), 32.21%( P <0.01)and 33.09%( P <0.01), 32.04%( P <0.01), 31.16%( P <0.01)compared with group 1, 2 and 3 respectively.LD of group 3 and 4 were increased 103.49%( P <0.01), 73.27%( P <0.01), 96.51%( P <0.01), 67.33%( P <0.01)compared with group 1 and 2 respectively.CORof group 1, 2 and 4 were increased 60.06%( P <0.01), 61.43%( P <0.01), 55.15%( P <0.01)compared with group 3 respectively.IL-1βof group 1 were increased 10.80%( P <0.01), 9.70%( P <0.01), 5.53%( P <0.05)compared with group2, 3and 4 respectively.TNF of group 1 wasincreased 12.43%( P <0.01)compared with group 3, group 4 wasincreased 8.40%( P <0.05)compared with 3.HPT of group 1 were increased 14.81%( P <0.05), 16.04%( P <0.01), 13.02%( P <0.05) compared with group 2, 3 and 4 respectively.DA of group 4 was increased 15.38%( P <0.01)compared with group3.