Changes in gonadotrophin secretion and ovarian antral follicular activity in seasonally breeding sheep throughout the year.

@article{McNatty1984ChangesIG,
  title={Changes in gonadotrophin secretion and ovarian antral follicular activity in seasonally breeding sheep throughout the year.},
  author={Kenneth P. McNatty and Norma Lorraine Hudson and Keith Henderson and Stan Lun and Derek A Heath and M C Gibb and Karen Ball and J M McDiarmid and D C Thurley},
  journal={Journal of reproduction and fertility},
  year={1984},
  volume={70 1},
  pages={309-21}
}
Overall, significantly more antral follicles greater than or equal to 1 mm diameter were present in Romney ewes during anoestrus than in the breeding season (anoestrus, 35 +/- 3 (mean +/- s.e.m.) follicles per ewe, 23 sheep; Day 9-10 of oestrous cycle, 24 +/- 1 follicles per ewe, 22 sheep; P less than 0.01), although the mean numbers of preovulatory-sized follicles (greater than or equal to 5 mm diam.) were similar (anoestrus, 1.3 +/- 0.2 per ewe; oestrous cycle, 1.0 +/- 0.1 per ewe). The… CONTINUE READING

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