Short oestrous cycles in sheep during anoestrus involve defects in progesterone biosynthesis and luteal neovascularisation

Anoestrous ewes can be induced to ovulate by the socio-sexual, ‘ram effect’. However, in some ewes, the induced ovulation is followed by an abnormally short luteal phase causing a so-called ‘short cycle’. The defect responsible for this luteal dysfunction has not been identified. In this study, we i...

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