01297naa a2200253 a 450000100080000000500110000800800410001910000190006024500710007926000090015052006120015965000090077165000170078065000170079765000100081465000150082465000100083965000170084965300300086670000190089670000140091570000200092977300940094915215902023-05-08       1978    bl uuuu     u00u1 u    #d1 aHOHENBOKEN, W.  aFactors affecting puberty and reproduction.h[electronic resource]  c1978  aAn earlier section of this bulletin reported that breeding eastern Oregon farm flock Columbia and Targhee ewes to lamb at one year of age resulted in greater lifetime lamb production without affecting adversely their production of lamb and wool from ewes at two years of age. It was also shown that ewes able to lamb at one year of age had higher future lamb production than ewes which failed to lamb at that time when given the opportunity. When a manager decides that mating of ewe lambs is appropriate for his operation, he then needs to know techniques that will make it work as efficiently as possible.  aEwes  aLambing rate  aReproduction  aSheep  aFisiologia  aOvino  aReprodução  aComportamento reprodutivo1 aCEDILLO, R. W.1 aVAVRA, M.1 aPHILLIPS, R. L.  tCorvallis, Oregan Agricultural Experiment Station, 1978. p. 20-27. (Special Report, 502).