猪瘦肉增加比例与肌蛋白氨基酸组分间关联性的研究

以定远猪为母本，分别与瘦肉型猪种杂交所产F1代仔猪进行肌肉生长性状及肌肉蛋白质含量、氨基酸组分的分析与比较。结果发现：①眼肌重、眼肌面积与蛋白质含量三者间达到较高的正相关(r=0.74～0.85)，蛋白质含量高者，眼肌重和眼肌面积均明显增加；②杂交后，F3代猪肌肉蛋白质含量均有提高，并以长白×定远杂交组合改良效果最好，达到22.6％；⑧杂交后F1代猪肌肉中赖氨酸、亮氨酸、异亮氮酸、缬氨酸含量均较对照组有不同程度提高，并且赖氨酸、亮氨酸、异亮氮酸与骨骼肌生长间有较强的正相关，其中赖氨酸与肌肉增长相关性为r=0.51～0.96，亮氨酸、异壳氨酸与肌肉增长相关性为r＝0.40～0.80；④杂交后可有效提高猪瘦肉产出量，明显提高瘦肉率，并适应改进猪后躯的发育。

Relationship of Lean Meat Increased Rate,Protein and Component of Amino Acids in Pork

Our research was going to test the relationship between the muscle growing characteristics and component of amino acids (AA)when Dingyuan Sow crossed meat type boar. The result showed,There was the positive correlation among the eye muscle weight ,area and protein content in muscle (r ＝ 0. 74～0. 85),between Lysine level (r＝0. 51～0. 96) or leucine (Isoleucine) level (r＝0. 40～0. 80) and lean meat weight. The eye muscle weight and area was increased with the protein content raising. The lean meat weight was increased with the lysine or leucine. Isoleucine level getting high when cro~breed so that the output of meat and lean meat percentage was significantly increased.