Effect of different semen extenders for the storage of chilled sperm in Tigrina (Leopardus tigrinus)

Effect of different semen extenders for the storage of chilled sperm in Tigrina (Leopardus tigrinus)

Author Angrimani, D. S. R. Google Scholar
Barros, P. M. H. Google Scholar
Losano, J. D. A. Google Scholar
Cortada, C. N. M. Google Scholar
Bertolla, R. P. Autor UNIFESP Google Scholar
Guimaraes, M. A. B. V. Google Scholar
Correa, S. H. R. Google Scholar
Barnabe, V. H. Google Scholar
Nichi, M. Google Scholar
Abstract To enhance the conservation of endangered populations, the present study aimed to evaluate whether Tigrinas (Leopardus tigrinus) sperm could be conserved under refrigeration for short periods while maintaining sufficient quality for use in assisted-reproductive techniques (i.e., cryopreservation, in vitro fertilization). For this purpose, semen samples from 15 Tigrinas individuals were submitted to conventional and functional tests after different cooling periods (4 degrees C

0, 12, and 24 hours postcooling), using TCM 199 (TCM), Ham's F10 (HAM), Ham's F10 with bovine serum albumin (HBSA), and Tris-citrate egg yolk (TEYC) extenders. In a second step, semen cooled using TEYC was supplemented with reduced glutathione (GSH) at different concentrations (0, 0.5, 1.0, and 1.5 mM). TEYC yielded superior results compared with TCM, HAM, and HBSA even after 24 hours of cooling in regard to the sperm motility index (SMI TEYC: 50.2 +/- 1.7%), high mitochondrial activity (TEYC: 51.4 +/- 1.9%), plasma membrane integrity (TEYC: 53 +/- 2.1%), and DNA integrity (TEYC: 563 +/- 2.9%). In regard to the concentration of thiobarbituric-acid-reactive substances (TBARS), TEYC (1900.1 +/- 341.4 ng/10(6) spermatozoa) showed higher levels compared with the other extenders (HAM: 638.7 +/- 121.6 ng/10(6) spermatozoa

HBSA: 468.7 +/- 95.6 ng/10(6) spermatozoa

TCM: 169.6 +/- 31.6 ng/10(6) spermatozoa). However, GSH therapy had no effect. In conclusion, the TEYC extender may be useful in maintaining sperm parameters of Tigrinas for up to 24 hours at 4 degrees C. Furthermore, these results allow the transport of this material at a minimum quality to be further used for artificial insemination, in vitro fertilization, and the development of semen cryopreservation protocols. (C) 2016 Elsevier Inc. All rights reserved.
Keywords Leopardus tigrinus
Short-term preservation
Reactive oxygen species
Antioxidants
DNA fragmentation
xmlui.dri2xhtml.METS-1.0.item-coverage New York
Language English
Date 2017
Published in Theriogenology. New York, v. 89, p. 146-154, 2017.
ISSN 0093-691X (Sherpa/Romeo, impact factor)
Publisher Elsevier Science Inc
Extent 146-154
Origin http://dx.doi.org/10.1016/j.theriogenology.2016.10.015
Access rights Closed access
Type Article
Web of Science ID WOS:000392352000019
URI https://repositorio.unifesp.br/handle/11600/55219

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