Echternkamp, S E Plasma LH concentrations for prepubertal, postpubertal, anestrous and cyclic ewes of varying fecundity. [electronic resource] - Journal of animal science Feb 1976 - 444-7 p. digital Publication Type: Journal Article ISSN: 0021-8812 Standard No.: 10.2527/jas1976.422444x doi Subjects--Topical Terms: Age FactorsAnimalsEstrusFemaleFertilityLuteinizing Hormone--bloodOvulationPregnancySheep--physiology