01515naa a2200253 a 450000100080000000500110000800800410001902400480006010000150010824501240012326000090024752007690025665000100102565000200103565000120105565000170106765000100108465000100109465000170110465300140112170000220113570000180115777300860117515198022023-06-13       1975    bl uuuu     u00u1 u    #d7 ahttp://dx.doi.org/10.1051/rnd:197503032DOI1 aCOUROT, M.  aVariations in pituitary and blood LH during puberty in the male lamb. Relation to time of birth.h[electronic resource]  c1975  aTesticular weight, pituitary LH concentration, blood plasma LH were measured in He-de-France lambs born in the sexual season (September) or out of season (February) to see how these characters are modified at puberty. During the period of low testicular growth, the impuberal period, there was a large increase in pituitary LH concentration and a significant linear increase in blood plasma LH, the half-life of the latter is the same as in the adult. In the period of rapid testicular growth, the prepubertal and pubertal period, pituitary LH stabilised or decreased according to the season, and blood LH remained at a level lower than that of the peack reached at the end of the preceeding period.Thus spermatogenesis commeced after blood LH reched peack values.  aMales  aPituitary gland  aPuberty  aReproduction  aSheep  aOvino  aReprodução  aPuberdade1 aRIVIERS, M. M. de1 aPELLETIER, J.  tAnnales de Biologie Animale Biochimie Biophysiquegv. 15, n. 3, p. 509-516, 1975.