Effect of prolonged aflatoxin B1 administration on blood serum oestradiol-17β and progesterone concentrations of goats during the anoestrus period --

G.D. Kourousekos, E.K. Theodosiadou, A.G. Lymberopoulos, S. Belibasaki and C. Boscos
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G.D. Kourousekos: Faculty of Veterinary Medicine, Aristotle University, Thessaloniki, Greece
E.K. Theodosiadou: Faculty of Veterinary Medicine, University of Thessaly, Karditsa, Greece
A.G. Lymberopoulos: Department of Animal Production, Alexander Technological Educational Institute, Thessaloniki, Greece
S. Belibasaki: Veterinary Research Institute, Ηellenic Agricultural Organization Demeter, Thessaloniki, Greece
C. Boscos: Faculty of Veterinary Medicine, Aristotle University, Thessaloniki, Greece

Czech Journal of Animal Science, 2015, vol. 60, issue 4, 164-170

Abstract: The effect of prolonged aflatoxin B1 (AFB1) administration on blood serum oestradiol-17β and progesterone concentrations in goats during the anoestrus period was investigated. Thirty Greek indigenous goats were used; 10 goats received, per os, 50 μg (treated group T50) and 10 goats received 100 μg (treated group T100) AFB1/day/head, respectively, for 31 days, while 10 goats served as controls (C). Blood samples were collected from each goat twice a week to determine serum oestradiol-17β and progesterone concentrations by radioimmunoassay. Multiple linear regression analysis revealed a significant (P < 0.05) positive dependence of blood serum oestradiol-17β concentration over group (C = 0, T50 = 50, T100 = 100), in a dose-dependent manner, and a significant (P < 0.05) negative dependence over time (0-31 days, from the onset to the end of AFB1 administration). Linear regression analysis revealed a significant (P < 0.05) positive dependence of blood serum progesterone concentration over group (C = 0, T50 = 50, T100 = 100), in a dose-dependent manner. Pearson's correlation coefficient revealed a significant (P < 0.05) positive correlation between blood serum oestradiol-17β and progesterone concentration, but only in the goats of the control group. In conclusion, the prolonged administration of 100 or even of 50 μg AFB1/day/head during the anoestrus period, increased blood serum oestradiol-17β and progesterone concentrations of goats, in a dose-dependent manner, and in the treated groups disturbed the positive correlation between oestradiol-17β and progesterone concentration shown in the goats of the control group.

Keywords: aflatoxins; mycotoxins; ovarian steroids; small ruminants; anoestrus (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:60:y:2015:i:4:id:8130-cjas

DOI: 10.17221/8130-CJAS

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