title: Boar Differences In Artificial Insemination Outcomes: Can They Be Minimized?
abstract: In Western countries, where pig breeding and production are intensive, there is a documented variability in fertility between farms with boar-related parameters only accounting to 6% of this total variation of in vivo fertility. Such low boar effect could be a result of the rigorous control of sires and ejaculates yielding AI-doses exerted by the highly specialized AI-centres that monopolize the market. However, some subfertile boars pass through these rigorous controls and consequently reach the AI-programmes. Here, we discuss why testing young boars for chromosomal defects, sperm nuclear chromatin integrity and in vitro fertilizing ability can be discriminative and economically sound for removing these less fertile boars. Alongside, we discuss why boars differ in the ability of their sperm to tolerate cryopreservation or sex sorting.
authors.affiliation: Veterinary Medicine, University of Murcia, Murcia, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Roca
authors.affiliation: Topigs Norsvin Research Center BV, Beuningen, The Netherlands.
authors.forename: M L W J
authors.initials: ML
authors.lastname: Broekhuijse
authors.affiliation: Veterinary Medicine, University of Murcia, Murcia, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Parrilla
authors.affiliation: Department of Clinical & Experimental Medicine (IKE), University of Linköping, Linköping, Sweden.
authors.forename: H
authors.initials: H
authors.lastname: Rodriguez-Martinez
authors.affiliation: Veterinary Medicine, University of Murcia, Murcia, Spain.
authors.forename: E A
authors.initials: EA
authors.lastname: Martinez
authors.affiliation: AIM iberica, Topigs Norsvin, Las Rozas, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Bolarin
mesh_terms: D000818:Animals; D001947:Breeding; D015925:Cryopreservation / Q000662:veterinary; D005298:Fertility; D005307:Fertilization in Vitro / Q000662:veterinary; D007248:Infertility, Male / Q000235:genetics / Q000662:veterinary; D007315:Insemination, Artificial / Q000379:methods / Q000662:veterinary*; D008297:Male; D012661:Semen / Q000502:physiology; D012662:Semen Preservation / Q000662:veterinary; D013076:Sperm Count; D013094:Spermatozoa / Q000502:physiology; D013552:Swine; D013553:Swine Diseases / Q000209:etiology / Q000517:prevention & control; D016896:Treatment Outcome