Abstract
The introduction of rams to seasonally-anovular ewes will, at certain times of the year, stimulate increased pulsatile release of LH, follicle development and ovulation (Martin et al., 1986). The neuroendocrine mechanism governing the transition into adulthood of ewe lambs is incompletely understood, but it is believed to be similar to that which controls the transition to the breeding season in the adult ewe (Foster, Yellon and Olster, 1985; Legan, Karsch and Foster, 1977). Thus the introduction of rams may have a similar action in the pre-puberal ewe lamb as in the seasonally-anovular adult ewe. This experiment investigated the effect of the introduction of rams on the pattern of LH secretion and follicle development in ewe lambs during the late summer/early autumn of their first year of life.
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Schedule a callMore From: Proceedings of the British Society of Animal Production (1972)
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