摘要
用公畜分组带亲缘关系的混合模型ＢＬＵＰ法对湖北白猪Ⅵ系的主选性状、日增重和背膘厚进行了遗传趋势分析，结果表明：在６ 个世代的继代选育中，日增重的群体遗传趋势为７１．０１３５ ｇ，呈逐代上升趋势；背膘厚群体遗传趋势为－０．００９５ ｃｍ ，呈逐代下降趋势。但是，通过世代的ＥＴＡ变异范围的波动性来看，其遗传潜力还未能充分表现，有待于进一步提高。通过公畜血统组间效应分析和日增重与背膘厚两性状的ＥＴＡ、ＷＡＴＡ相关关系分析得出，随着Ⅵ系选育的进一步深入，提高日增重，有使瘦肉率降低的危险。
The genetic tendency of HuBei White line boars was analyzedfor daily gains(ADG) and backfat thickness(BFT) by BLUP with numerator relationship.In this mixed model,the boars were grouped.The resultsshow:during the systematic breeding of 6 generations,the population genetic tendency of ADG and BFT are 71.0135 g,0.0095 cm.But from the fluctuation of ETA variation,We know the genetic potential wasn'texploited completely.By the intergroup effects analysis of boar blood group and the correlation analysis of ETA and WATA,we conclude agreater ADG could lead to a lower BFT with the further breeding of LineⅥ.
出处
《黑龙江畜牧兽医》
CAS
北大核心
2000年第1期2-4,共3页
Heilongjiang Animal Science And veterinary Medicine
基金
"九五"国家重点攻关课题!96 -003- 01 -01
