title: Semen controlled-release capsules allow a single artificial insemination in sows.
abstract: Controlled-release capsules containing boar spermatozoa were developed to extend the preservation time of spermatozoa and maximize the efficiency of a single artificial insemination. A large trial (4245 sows) was performed with these capsules using double/triple conventional artificial insemination as a control. The effect of treatment on pregnancy diagnosis, delivery, and born piglets was investigated, with allowance being made for considering season, spermatozoa amount, and the weaning-to-estrus interval as confounding variables. The same pregnancy rate and prolificacy were obtained by two insemination techniques, and a higher parturition frequency was reached with capsules. The reproductive performance in pigs has therefore been optimized by a single instrumental insemination with controlled-release capsules.
authors.affiliation: Dipartimento di Scienze e Tecnologie Veterinarie per la Sicurezza Alimentare, University of Milan, 20133 Milan, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Vigo
authors.forename: M
authors.initials: M
authors.lastname: Faustini
authors.forename: S
authors.initials: S
authors.lastname: Villani
authors.forename: F
authors.initials: F
authors.lastname: Orsini
authors.forename: M
authors.initials: M
authors.lastname: Bucco
authors.forename: T
authors.initials: T
authors.lastname: Chlapanidas
authors.forename: U
authors.initials: U
authors.lastname: Conte
authors.forename: K
authors.initials: K
authors.lastname: Ellis
authors.forename: M L
authors.initials: ML
authors.lastname: Torre
mesh_terms: D000818:Animals; D003692:Delayed-Action Preparations; D005260:Female; D007315:Insemination, Artificial / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000662:veterinary; D018873:Pregnancy Rate; D013094:Spermatozoa; D013552:Swine / Q000502:physiology*
chemical_list: D003692:Delayed-Action Preparations