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Oviductal Proteins Effect in Rooster Spermatic Cryopreservation

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BACKGROUND: Cryopreservation induces spermatic cryo capacitation, which can decrease thawed sperm fertilizing capability. OBJECTIVE: To evaluate the effect of uterus-vaginal union protein factors to inhibit sperm cryo capacitation and mantain viability and fertilizing capability of rooster spermatozoa. MATERIALS AND METHODS: Rooster spermatozoa was cryopreserved using Lake extender supplemented with different hen's uterus-vaginal junction protein concentrations, to determine spermatic viability, sperm physiological condition and fertilizing capability in vivo. RESULTS: It was possible to induce spermatic decapacitation in vitro, inhibiting cryo capacitation and allowing fertility results comparable to those obtained with fresh semen. CONCLUSION: Uterus-vaginal protein extracts induce spermatic decapacitation in vitro.
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Document Type: Research Article

Publication date: November 1, 2019

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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