Summary and Implications
The purpose of this study was to estimate the relationship between purebred and crossbred sow reproductive performance. The relationship between purebred and crossbred performance is the foundation of all successful breeding programs. The heritability estimates for all traits ranged from 0.11 to 0.22. The estimated genetic correlations (standard error) for NBA and NBD between the first parity at the nucleus level and parities 2 and greater at the commercial level were 0.98 (±0.20) and 0.40 (±0.22), respectively. The results of this study indicate that a relationship between purebred and crossbred performance exists. Thus, selection on purebred individuals may result in improvement in crossbred performance.
Iowa State University
Abell, Caitlyn; Stalder, Kenneth J.; and Holl, Justin
"Relationship Between Purebred and Crossbred Performance for Number Born Alive and Number Born Dead ,"
Animal Industry Report:
AS 658, ASL R2726.
Available at: http://lib.dr.iastate.edu/ans_air/vol658/iss1/58