title: Mating by vasectomized boars failed to improve fertility in gilts inseminated with frozen semen.
abstract: One-hundred sixty-four gilts were artificially inseminated (AI) with frozen-thawed boar semen and, of these, 78 were immediately bred by a vasectomized boar after AI. The farrowing rate and litter size were 37.2 and 7.2 for mated gilts and 38.4 and 7.5 for control gilts, respectively. Mating by a vasectomized boar did not improve fertility or litter size.
authors.affiliation: U.S. Department of Agriculture, ARS, Beltsville Agricultural Research Center, Reproduction Laboratory, Beltsville, MD 20705, USA.
authors.forename: V G
authors.initials: VG
authors.lastname: Pursel
authors.forename: D O
authors.initials: DO
authors.lastname: Elliott
authors.forename: C W
authors.initials: CW
authors.lastname: Newman