Abstract
Anti- Mullerian hormone (AMH) emerges as the most reliable endocrine marker in assessing the fertility potential over the ages. The age-specific reference range for peripheral AMH concentrations in cattle is lacking. The present study thus aimed (i) to address the question whether ovarian secretion of AMH would be affected by gonadotrophic status after gonadotrophin releasing hormone (GnRH) challenge in cattle and (ii) to establish age-specific plasma AMH concentrations in Holstein Friesian crossbred cattle (n= 151) using an enzyme immune-assay technique. Data on hormonal concentrations over time in GnRH-treated animals were analyzed by nonparametric one-way repeated measure ANOVA. GnRH challenge could not bring any change (P>0.05) in plasma AMH concentrations, while plasma FSH and LH concentrations changed significantly (P
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