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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Livestock Production...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Livestock Production Science
Article . 1993 . Peer-reviewed
License: Elsevier TDM
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In vitro techniques in fox reproduction

Authors: A.L. Hafne; Hyttel P; W. Farstad; E. Nagyova; A. Krogenæs;

In vitro techniques in fox reproduction

Abstract

Abstract The domestic blue fox ( Alopex lagopus ) is extensively farmed in Scandinavia, and represents a genetic reserve, as well as a model for basic reproductive studies for the wild arctic fox, which is a canid species threatened by extinction. The development of in vitro techniques may be a way to preserve genetic material from the wild fox population. The scope of this paper was to review the authors' first experiments with maturation and fertilization in vitro (IVM, IVF) of fox oocytes. IVF was attempted after collection of in vivo matured oocytes 2 days after maximum vaginal electrical resistance, from 6 farmed blue fox females in natural oestrus. IVM was carried out in oocytes collected from ovaries of 29 vixens in pro-oestrus, i.e. prior to the preovulatory LH peak. The oocytes for IVM were cultured in bovine IVM media (M199, 10% FCS, w/wo FSH), but without LH. In the IVF experiment, 2 of 36 inseminated ova developed beyond the 4-cell stage. One embryo developed to a morula 144 h after insemination. In the IVM experiment 325 oocytes were evaluated, 91% (w/FSH) vs 78% showed germinal vesicle breakdown. GVBD was observed after 24 h in culture (19% w/FSH vs 27%), MI was reached at 48 h (70% vs 40%), MII at 48–72 h (48% vs 22%), but the majority of MII were seen at 96 h after insemination (73% vs 66%). Duration of IVM (96 h) was somewhat longer than observed in vivo (72 h). Although dissociation of cumulus cells was observed, corona radiata cells were tightly connected with the oocytes, suggesting incomplete cytoplasmatic maturation.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
8
Average
Average
Average
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