Animal Science Department


Date of this Version



Published in 2009 Nebraska Swine Report. Prepared by the staff in Animal Science and cooperating Departments for use in Extension, Teaching, and Research programs. Copyright © 2009, The Board of Regents of the University of Nebraska on behalf of the University of Nebraska-Lincoln Extension.


The growth performance of weaned pigs derived from different parities has not been previously evaluated; however, unpublished and anecdotal observations suggest that progeny derived from first parity (PI) dams have reduced health status and growth performance compared to progeny derived from mature sows (2 P2). The objective of the current study was to evaluate the effect of dam parity on growth performance and immune response of PI and P4 progeny during the nursery phase o fproduction. Results from this experiment suggest that P4 progeny have increased body weight and growth performance during the nursery phase of production compared to PI progeny There were no effects of dam parity on immune response in this experiment.