00984naa a2200169 a 450000100080000000500110000800800410001910000170006024500390007726000090011652005360012565000090066165000280067065000100069865300190070877300870072720922942018-06-07       1981    bl uuuu     u00u1 u    #d1 aMEYER, H. H.  aEarly predictors of ewe fertility.  c1981  aTwo-tooth ovulation rate and hogget oestrus activity were measured on two flocks in 1975 and reproductive performance was recorded for surviving ewes in 1977-9. Twin ovulators were on average 2 kg heavier than single ovulators and hogget oestrous activity was positively related to May hogget weight. Weight differences diminished but did not disappear with time. Within both flocks a small but positive phenotypic relationship existed between early indicators of increased fertility and subsequent mature reproductive performance.  aEwes  aReproductive efficiency  aSheep  aOestrous cycle  tProceedings of the New Zealand Society of Animal Productiongv. 41, 204-208, 1981.