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Cryoprotective effect of glycerol concentrations on Indian Red Jungle Fowl (Gallus gallus murghi) spermatozoa

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Abstract

Semen cryopreservation protocols for wild avian species need to be optimised in order to achieve optimum post-thaw sperm quality and fertility. The present study was designed to evaluate the cryoprotective effect of different glycerol concentrations (11%, 15% and 20%) on post-thaw quality, recovery rates, absolute livability index and fertility of Indian Red Jungle Fowl (Gallus gallus murghi) semen. Semen was collected from eight mature cocks and cryopreserved for storage at ‐196 °C. Frozen semen was thawed at 37 °C for 30 s and assessed for motility, plasma membrane integrity, viability and acrosome integrity at 0, 2 and 4 h incubation at 37 °C. Percentages of motility, plasma membrane integrity, viability and acrosome integrity were recorded higher (P<0.05) post-thaw at 0, 2 and 4 h at 37 °C with 20% glycerol compared to 15% and 11% glycerol. Likewise, recovery rates (%) of aforementioned parameters after cryopreservation and absolute livability index were observed highest (P<0.05) with 20% glycerol. By comparing values of R 2 after multivariate regression analysis, least negative effects of hours of incubation were observed on semen quality in extenders with 20% glycerol followed by 15% and 11% glycerol. The fertility outcomes (number of fertile eggs, fertility [%], number of hatched chicks, percent hatch and hatchability of fertilised eggs) were recorded higher (P<0.05) with 20% glycerol followed by 15% and 11% glycerol. It is concluded that the concentration of 20% glycerol gives the best cryoprotection for quality and fertility of Indian Red Jungle Fowl semen.
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Keywords: Indian Red Jungle Fowl; fertility; glycerol; sperm viability

Document Type: Research Article

Publication date: 01 May 2018

This article was made available online on 27 March 2018 as a Fast Track article with title: "Cryoprotective effect of glycerol concentrations on Indian Red Jungle Fowl (Gallus gallus murghi) spermatozoa".

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  • Avian Biology Research provides a forum for the publication of research in every field of ornithology. It covers all aspects of pure and applied ornithology for wild or captive species as well as research that does not readily fit within the publication objectives of other ornithological journals. By considering a wide range of research fields for publication, Avian Biology Research provides a forum for people working in every field of ornithology. The journal also includes sections on avian news, conference diary and book reviews.

    Editor-in-Chief: Charles Deeming Editors: Tom Pike; Dale Sandercock; Claudia Wascher; Josh Firth; David Wilkinson; Jim Reynolds Production Editor: Claire Pike

    Cover image: Satyr Tragopan (Tragopan satyra). Credit: jurra8/Shutterstock.com.

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