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Differences in gonadotrophin concentrations and pituitary responsiveness to GnRH between Booroola ewes which were homozygous (FF), heterozygous (F + ) and non-carriers (++) of a major gene influencing their ovulation rate
The mean plasma concentrations of FSH and LH were significantly higher in FF ewes than in ++ ewes with those for F+ animals being consistently in between. These gene-specific differences were found during anoestrus, the luteal phase and during a cloprostenol-induced follicular phase, suggesting that the ovaries of ewes with the F-gene are more often exposed to elevated concentrations of FSH and LH than are the ovaries of ewes without the gene. The gene-specific differences in LH secretion arosedoi:10.1530/jrf.0.0800577 pmid:3116233 fatcat:hu6cizfouzhcfbzrjzsvxa57nu