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Author |
Palme, R.; Touma, C.; Arias,N.; Dominchin, M.F.; Lepschy, M. |
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Title |
Steroid extraction: Get the best out of faecal samples |
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Journal Article |
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Year |
2012 |
Publication |
Veterinary Medicine Austria |
Abbreviated Journal |
Vet. Med. Austria |
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100 |
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238-246 |
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Abstract |
Faecal steroid hormone metabolites are becoming increasingly popular as parameters for reproductive functions and stress. Theextraction of the steroids from the faecal matrix represents the initial step before quantification can be performed. The steroid metabolites present in the faecal matrix are of varying polarity and composition, so selection of a proper extraction procedure is essential. There have been some studies to address this complex but often neglected point. Radiolabelled
steroids (e.g. cortisol or progesterone) have frequently been added to faecal samples to estimate the efficiency of the extraction procedures used. However, native, unmetabolized steroids are normally not present in the faeces and therefore the results are artificial and do not accurately reflect the actual recoveries of the substances of interest. In this respect, recovery experiments based on faecal samples from radiometabolism studies are more informative. In these samples, the metabolite content accurately reflects the mixture of metabolites present in the given species. As a result, it is possible to evaluate different extraction methods for use with faecal samples. We present studies on sheep, horses, pigs, hares and dogs that utilized samples containing naturally metabolized, 14C-labelled steroids. |
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Review, faeces, extrac- tion, non-invasive hormone moni- toring, stress, reproduction. |
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Equine Behaviour @ team @ |
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6046 |
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Author |
Krueger, K.; Marr, I.; Farmer, K. |
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Title |
Equine Cognition |
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Book Chapter |
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2017 |
Publication |
Encyclopedia of Animal Cognition and Behavior |
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1-11 |
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Springer International Publishing |
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Cham |
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Vonk, J.; Shackelford, T. |
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978-3-319-47829-6 |
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Equine Behaviour @ team @ Krueger2017 |
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6181 |
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Author |
Mench, J.A.; Morrow-Tesch, J.; Chu, L.-R. |
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Title |
Environmental enrichment for farm animals |
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Journal Article |
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1998 |
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Lab Animal |
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Lab Anim. |
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27 |
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32-36 |
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ISSN : 0093-7355 |
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Equine Behaviour @ team @ |
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6188 |
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Author |
Pérez-Barbería, F.J.; Shultz, S.; Dunbar, R.I. |
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Title |
Evidence for coevolution of sociality and relative brain size in three orders of mammals |
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2007 |
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Evolution |
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61 |
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Equine Behaviour @ team @ Pérez-Barbería2007 |
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6221 |
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Author |
Van Schaik, C.P.; Burkart, J.M. |
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Title |
Social learning and evolution: the cultural intelligence hypothesis |
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Journal Article |
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Year |
2011 |
Publication |
Philos Trans R Soc B |
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366 |
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Equine Behaviour @ team @ Van Schaik2011 |
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6227 |
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Author |
Heyes, C. |
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Title |
What's social about social learning? |
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2012 |
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J Comp Psychol |
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120 |
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Equine Behaviour @ team @ Heyes2012 |
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6228 |
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Author |
Van Horik, J.; Emery, N. |
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Title |
Evolution of cognition |
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Journal Article |
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Year |
2011 |
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Wiley Interdiscip Rev Cogn Sci |
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2 |
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Equine Behaviour @ team @ Van Horik2011 |
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6230 |
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Author |
Shettleworth, S.J. |
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Title |
The evolution of comparative cognition: is the snark still a Boojum? |
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2009 |
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Behav Processes |
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80 |
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Equine Behaviour @ team @ Shettleworth2009 |
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6231 |
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Kruska, D. |
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Title |
Mammalian domestication and its effect on brain structure and behavior |
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1988 |
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Intelligence and Evolutionary Biology |
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Springer-Verlag |
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New York |
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Jerison, H.J.; Jerison, I. |
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Equine Behaviour @ team @ Kruska1988 |
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6232 |
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Author |
Kruska, D. |
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Title |
The effect of domestication on brain size and composition in the mink (Mustela vison) |
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1996 |
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J Zool |
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239 |
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Equine Behaviour @ team @ Kruska1996 |
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6234 |
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