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广花猪选育是用群体继代选种方法的同时,加上通过杂交后代的表现去评定母猪,将杂交后代表现良好的母猪选留下来进行纯繁。研究结果,广花公、母猪从2—6世代6月龄,背膘厚降低0.42厘米,下降22.70%;日增重增加69.1克,提高22.34%;指数值增加11.32分,提高8.88%;精肉率提高2.81百分点。广花猪杂交后代从1—5世代,背膘厚降低0.75厘米,下降23.44%;日增重增加77.77克,提高13%;指数值增加18.91分,提高17.86%;瘦肉率提高3.44百分点。表明本方法的选择效应是良好的。
Guanghua pig breeding is the method of population selection at the same time, coupled with the performance of the offspring to assess the performance of sows, hybrid offspring of sows to choose a good choice to stay pure. The results showed that the average growth rate of backgrass was 0.42 cm, decreased by 22.70%. The daily gain was increased by 69.1 g and increased by 22.34%. The index value increased by 11.32 and increased by 8.88% The rate of refined meat increased by 2.81 percentage points. From the first to the fifth generation, the backcrossing thickness of backcrossing pigs decreased by 23.44% from the first to the fifth generation. The daily gain increased by 77.77g, increased by 13%; the index value increased by 18.91, increased by 17.86%; the lean meat percentage increased by 3.44 percentage points. It shows that the selective effect of this method is good.