Lack of sexual aggressiveness and infertility in boars are problems that have been experienced to some degree by nearly every swine producer. The impact of these problems on the efficiency of swine production depends on their frequency; but even relatively few boar reproductive problems can upset the production schedule of units that are farrowing continuously.
Recent research provides convincing evidence that at 7 to 9 months of age crossbred boars are more aggressive breeders than purebreds and that conception rates are higher for females mated to crossbred boars. The purpose of this report is to examine the research that compares purebred and crossbred boars and to briefly evaluate the economic impact crossbred boars can have on the efficiency of production.
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Agricultural Experiment Station, South Dakota State University
Johnson, Rodger K., "Crossbred Boars Can Be Used to Improve Reproductive Efficiency" (1981). South Dakota Swine Field Day Proceedings and Research Reports, 1981. 13.