确山黑猪及其杂交后代屠宰性能分析

Study and Analysis on Slaughter Performance of Queshan Black Pig and its Hybrid

为提高确山黑猪的屠宰性能,以确山黑猪为母本,杜洛克、长白、大白和汉普夏为父本开展二元杂交试验;选取长×确为母本,杜洛克和大白为父本开展三元杂交试验,比较分析不同杂交组合后代的屠宰性能和胴体性状。结果显示,长×确二元杂交后代的平均日增重440.53g/d、屠宰率75.05%、瘦肉率53.19%、眼肌面积34.51cm^2均显著高于确×确和其他杂交组合(P<0.05);大×长×确三元杂交后代平均日增重663.76g/d显著高于杜×长×确(P<0.05),其他指标均差异不显著(P>0.05);三元杂交组合的日增重629.60g/d、瘦肉率57.46%、眼肌面积33.89cm^2显著高于二元杂交(P<0.05)。试验结果表明,长×确二元和大×长×确三元杂交组合与其他杂交组合相比均具有一定优势,是确山黑猪较好的杂交方式。

To improve the slaughter performance of Queshan Black pig,Queshan Black pig was taken as the female parent,Duroc,Landrace,Yorkshire and Hampshire as the male parent to conduct binary hybrid experiment;Landrace×Queshan was taken as the female parent,Duroc and Yorkshire as male parent to conduct three-way cross experiment.The data were collected to analyze the slaughter performance and carcass traits of offspring of different hybrid combination.Results show the offspring of Landrace×Queshan binary hybrid has higher daily weight gain,dressing percentage,lean meat rate and loin eye area,namely,440.53 g/d,75.05%,53.19%,and 34.51 m^2,than Que×Que and other hybrid combination（P〈0.05）;the offspring of Yorkshire×Landrace×Que has a significantly higher daily weight gain of 663.76 g/d than Duroc×Landrace×Que（P〈0.05）,other indices are insignificantly different（P〉0.05）;the threeway hybrid combination has significantly higher daily weight gain（629.60 g/d）,lean meat rate（57.46%）,loin eye area（33.89 m^2）than binary hybrid combination（P〈0.05）.The experiment reveals Landrace×Que binary hybrid and Yorkshire×Landrace×Que three-way cross combination are superior to other hybrid combinations to some extent,which are better hybrid methods for Queshan Black pig.