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Free Content Effect of Pasteurized Egg and Rosmarinus Officinalis Supplementation on Quality of Cryopreserved Ram Semen

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The aim was to assess the in vitro effect of pasteurized egg (PE) and rosemary (Rosmarinus officinalis) on frozen-thawed ram semen. Ejaculates from three mature rams of the Rasa Aragonesa breed were cryopreserved using a 2-step dilution method (Fraction 1: F1; Fraction 2: F2). In Experiment 1, semen was frozen in egg yolk (EY) or PE extenders. After thawing, similar results were obtained in terms of total and progressive motility, viability, hypo-osmotic swelling test (HOST) and acrosome integrity after 2 h incubation. In Experiment 2, addition of rosemary to F1, F2 or both fractions to EY extenders was evaluated. Rosemary in F1 decreased progressive motility (p=0.013) after 2 h incubation. Finally, PE can be used as a substitute for EY to reduce hygienic risks in extenders and is easier to standardize. Supplementation of EY extender with rosemary in F1 reduced progressive motility. Rosemary supplementation in F2 does not affect semen quality.
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Keywords: CRYOPRESERVATION; PASTEURIZED EGG; RAM SEMEN; ROS; ROSEMARY

Document Type: Research Article

Publication date: July 1, 2013

More about this publication?
  • 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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