Animal Science Department


Date of this Version



Published in 1998 Nebraska Swine Report, compiled by Duane E. Reese, Associate Professor and Extension Swine Specialist, Department of Animal Science. Prepared by the staff in Animal Science and cooperating Departments for use in Extension, Teaching and Research programs. Published by Cooperative Extension Division, Agricultural Research Division, and Institute of Agriculture and Natural Resources at the University of Nebraska-Lincoln.
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A trial was conducted to determine the effects of genetic line and gilt development diet regimen and the interaction of these factors on the timely attainment of puberty in gilts. Genetic line was an important factor on the probability of gilts attaining puberty by 8.5 months. Results also indicated leaner gilts (as measured by backfat adjusted to 240 lb) had a lower probability of reaching puberty by 8.5 months than fatter gilts. Gilt development diet regimen and the interaction between genetic line and diet regimen were not significant effects on the attainment of puberty by 8.5 months of age. These results suggest genetic line-specific feeding programs are not necessary for early attainment of puberty.