Summary and Implications
The purpose of this study was to determine the relationship between individual sires breeding values (BV) for litters/sow/year (LSY) and progeny farrowing rate means. The correlation between the LSY BV and the sire progeny mean farrowing rate was 0.21 for those sires who had 10 or more daughters. The correlation between LSY BV and sire progeny mean for farrowing rate suggests that selecting for LSY could positively impact farrowing rate.
Iowa State University
Abell, Caitlyn; Stalder, Kenneth J.; and Mabry, John W.
"Relationship between Litters Per Sow Per Year Breeding
Value and Sire Progeny Means for Farrowing Rate,"
Animal Industry Report:
AS 657, ASL R2643.
Available at: http://lib.dr.iastate.edu/ans_air/vol657/iss1/67