Inhibition of lactation and ovarian function: a possible animal experimental model for humans.

Lactating Texel ewes are hyperprolactinemic. Hyperprolactinemia persists for at least the first 50 h after weaning, when the udder is swollen and tender. Oral administration of bromocriptine lowers hyperprolactinemia dramatically within 4 h, correlated with 'shrinking' of the udder. During lowering of hyperprolactinemia there is no immediate increase in LH.