Frozen semen: A breeding protocol that results in high fecundity
Michael J. Martin, PhD; Sarah Edgerton, BS; Barry Wiseman, DVM, PhD
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Farrowing rate and number of pigs born alive were compared after use of either frozen semen or combined fresh and frozen semen matings in nulliparous gilts. Estrus was synchronized using Altrenogest (AT: Regu-Mate(R) Solution, Hoescht Roussel Vet, Warren, New Jersey) and detected with a mature boar. The farrowing rate was 74% for females inseminated with frozen semen, and 88% for females inseminated with a combination of fresh and frozen semen. There were 12.8 pigs born per litter when frozen semen was used, and 12.9 when a combination of fresh and frozen semen was used. These data suggest that when a managed system is used, breeding with frozen semen may result in acceptable production.
Keywords: frozen semen, artificial insemination
Cite as: Martin M, Edgerton S, Wiseman B. Frozen semen: A breeding protocol that results in high fecundity. J Swine Health Prod 2000;8(6):275-277.
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