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  • Title: Semen controlled-release capsules allow a single artificial insemination in sows.
    Author: Vigo D, Faustini M, Villani S, Orsini F, Bucco M, Chlapanidas T, Conte U, Ellis K, Torre ML.
    Journal: Theriogenology; 2009 Sep 01; 72(4):439-44. PubMed ID: 19505716.
    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.
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