三种优质肉鸡肌纤维特性与肉质关系的研究

对芦花鸡、北方黄鸡、青脚麻鸡三种优质肉鸡的肌肉品质、肌纤维特性进行了比较,并对肌纤维特性与肌肉品质的相关性进行了研究。结果表明：（1）肌肉品质：三种鸡的肌肉肉色均正常,青脚麻鸡的剪切力显著比北方黄鸡和芦花鸡大,分别大9.18%、8.74%（P〈0.05）。品种间pH、滴水损失差异不显著。（2）肌纤维特性：北方黄鸡的肌纤维直径显著低于芦花鸡、青脚麻鸡低,分别低11.44%、13.71%（P〈0.05）,而北方黄鸡的肌纤维密度分别比芦花鸡、青脚麻鸡高15.49%、20.12%,呈显著性差异（P〈0.05）。（3）相关性：肌纤维直径与肌纤维密度呈负相关关系。肌纤维直径与三种鸡的pH呈负相关,与剪切力呈正相关（r=0.873）,与芦花鸡和北方黄鸡的肉色呈正相关,与青脚麻鸡的肉色呈负相关关系。肌纤维密度与三种鸡的pH呈正相关,与剪切力呈负相关（r=0.864）。与北方黄鸡和青脚麻鸡的肉色呈正相关,与芦花鸡的肉色呈负相关。

Study on Relationship Between Muscle Fiber and Meat Quality in Three Different Broilers

Meat quality and muscle fiber were tested among Luhua, Beifang Huang and Ma chicken of 110 days old raised under the same conditions,and the relationship between muscle fiber and meat quality were analyzed. The results showed that ： （1） the meat color muscle incarnadine of the chicken were all normal, the shear force of Ma was significant higher than that of Luhua and Beifang Huang by 9. 18;, 8.74% （P;0.05）, there was no significant difference among pH and drop water loss. （2） the muscle fi- ber diameters of Beifang H uang was significant lower than that of Luhua and Ma by 11.44 ;. 13.71% （P; 0.05）. The density of muscle fiber in Beifang Huang was significant higher than Luhua and Ma byl5. 49% .20.12%（P〈0.05）. （3）There was negative correlation between the diameter and pH,and there was positive correlation between the diameter and shearforce. There was negative correlation between the di- ameter of Luhua, Beifang Huang and meat color. There was positive correlation between muscle fiber den- sity and pH,and negative correlation between muscle fiber density and shear-force. There was positive cor- relation between the density of Beifang Huang, Ma and meat color,and negative correlation between the density of Luhua and meat color.