Hormone profiles around weaning in cyclic and anoestrous sows

Zentralblatt für Veterinärmedizin. Reihe A
V T TsumaN Lundeheim

Abstract

Peripheral plasma patterns of LH, cortisol, corticosteroid-binding globulin (CBG) and beta-endorphin were studied around weaning in sows that resumed cyclicity and those that remained anoestrus after weaning. Average LH concentration in both groups of sows, and basal LH concentration, LH pulses/6 h and the sum of LH pulses and peaks/6 h in the cyclic sows, increased from the day before weaning to significantly higher (P < 0.05) levels on the days after weaning. Overall, average and basal LH concentrations were higher (P < 0.05) in the sows that resumed cyclicity than in those that remained anoestrus. Cortisol and beta-endorphin concentrations were high before weaning and on the day of weaning in both groups of sows. Cortisol in the cyclic sows, and beta-endorphin in both groups of sows, decreased (P < 0.05) after weaning. CBG levels were unchanged until the second day after weaning when there was an increase (P < 0.05) in both groups of sows. Before and even after weaning cortisol, CBG and beta-endorphin levels tended to be higher in the sows that remained anoestrus compared with those that resumed cyclicity. Findings in the present study show higher levels of cortisol, CBG and beta-endorphin before weaning that persisted even ...Continue Reading

References

Jun 1, 1991·Zentralblatt für Veterinärmedizin. Reihe A·T RojkittikhunH Kindahl
Jan 1, 1991·Domestic Animal Endocrinology·C R BarbG B Rampacek
Jan 1, 1986·American Journal of Obstetrics and Gynecology·T LaatikainenD Apter
Apr 1, 1988·Annals of Internal Medicine·J H DingW J Bremner
Jan 1, 1982·Journal of Reproduction and Fertility·C R BarbT E Kiser
Jan 1, 1983·Journal of Reproduction and Fertility·S Edwards, G R Foxcroft
Apr 1, 1993·Zentralblatt für Veterinärmedizin. Reihe A·T RojkittikhunN Lundeheim

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Citations

Dec 17, 2008·Acta Veterinaria Scandinavica·Stig EinarssonAndrzej Madej
Jul 7, 2005·Domestic Animal Endocrinology·A MadejS Einarsson
Oct 3, 2008·Acta Veterinaria Hungarica·Tomasz SchwarzJacek Nowicki
Jan 12, 2007·Reproduction in Domestic Animals = Zuchthygiene·S EinarssonA Madej
Jul 2, 2017·Molecular Reproduction and Development·Jason W RossLance H Baumgard

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