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The presence of bacteria in boar semen causes economic losses in artificial insemination (AI) centers, as a consequence of alterations on boar sperm quality. For this reason, the effects of different concentrations of enterotoxigenic Escherichia coli (ETEC) and verotoxigenic E. coli (VTEC) on boar sperm quality were determined in this study, by conducting(More)
In vitro culture conditions and certain events during the earliest stages of development are linked to embryonic survival, possibly in a sex-related manner. In vitro-produced (IVP) porcine embryos cultured with glucose (IVC-Glu) or pyruvate-lactate (IVC-PL) were tested for any relationship between the timing of the first embryonic cleavage and development(More)
Bacteriospermia in boar fresh and extended semen is a frequent finding that produces alterations on sperm quality and, consequently, causes economic losses in artificial insemination (AI) centres. The present study sought to evaluate the effect of different infective concentrations of Clostridium perfringens on boar sperm quality, assessed as sperm motility(More)
The number of straws thawed has been largely neglected in reports of boar sperm cryopreservation. Whereas previous studies confirm the effect of sperm concentration on function and survival of thawed boar spermatozoa, it is still unknown whether, for a same concentration, total number of sperm in the thawing solution affects its mechanics. The present trial(More)
In the present study, the effects of replacing glucose with pyruvate-lactate and supplementing these in vitro culture (IVC) media with hyaluronic acid (HA) on porcine embryo development and sex ratio were examined. The in vitro-produced (IVP) porcine embryos were cultured in NCSU-23 medium with 0.0, 0.5 or 1.0mgmL(-1) HA, and with either 5.55mM glucose(More)
Polymerase chain reaction (PCR)-based assays have become increasingly prevalent for sexing embryos. The aim of the present study was to develop a suitable duplex PCR procedure based on the amplification of porcine repetitive sequences for sexing porcine tissues, embryos and single cells. Primers were designed targeting the X12696 Y chromosome-specific(More)
In semen, bacteria's isolation from a pure culture is complex, laborious and easily alterable by the presence of antibiotics and inhibitors. We developed a PCR technique to detect the presence of the enterotoxigenic (ETEC) and verotoxigenic Escherichia coli (VTEC) (strains with high prevalence in the swine industry) in semen by adapting the protocols(More)
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