长白猪胴体品质选择的研究

选取长白后备猪１０９头，肥育猪６４头为试材。测试结果表明，体尺性状与胴体性状存在极显著相关。在制定的三个选择指数中，利用典范相关分析和作者提出的决定系数遗传力提供的信息所构造的选择指数最适合。其决定系数为６０．７２％，中选符合率为８７．５％，体高为正向选择性状，管围和膘厚为负向选择性状，建议该指数为现猪群的选择指数。

Selection of Carcass Quality in Landrace Pigs

109 replacement pigs and 64 fattening hogs were used as the trial materia1s for the experiment.The results showed that the body measurement traits and carcass quality traits had significant correlation.Of the three established indexes,the one,based on the information of the canoncial correlation analysis and determinant coefficientheritability which was put forward by the writer,was the best.Its determinant coeffiecient was 60.72%,the qualification rate of seleetion 87.5%,body height positive,and circumference of cannon and fat thickness negative.The index can be adopted as theselection index in the current herd of the Landrace Pigs.