Penelope A R Hawken

Summary

Affiliation: University of Western Australia
Country: Australia

Publications

  1. ncbi request reprint The introduction of rams induces an increase in pulsatile LH secretion in cyclic ewes during the breeding season
    P A R Hawken
    School of Animal Biology, University of Western Australia, Crawley, WA 6009, Australia
    Theriogenology 68:56-66. 2007
  2. ncbi request reprint Short term, repeated exposure to rams during the transition into the breeding season improves the synchrony of mating in the breeding season
    P A R Hawken
    School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
    Anim Reprod Sci 106:333-44. 2008
  3. ncbi request reprint Prior exposure of maiden ewes to rams enhances their behavioural interactions with rams but is not a pre-requisite to their endocrine response to the ram effect
    P A R Hawken
    School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
    Anim Reprod Sci 108:13-21. 2008
  4. doi request reprint Ram novelty and the duration of ram exposure affects the distribution of mating in ewes exposed to rams during the transition into the breeding season
    P A R Hawken
    Newcastle University, Newcastle upon Tyne, United Kingdom
    Anim Reprod Sci 111:249-60. 2009
  5. doi request reprint Do cyclic female goats respond to males with an increase in LH secretion during the breeding season?
    P A R Hawken
    School of Animal Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
    Anim Reprod Sci 112:384-9. 2009
  6. doi request reprint Rapid induction of cell proliferation in the adult female ungulate brain (Ovis aries) associated with activation of the reproductive axis by exposure to unfamiliar males
    Penelope A R Hawken
    School of Animal Biology, University of Western Australia, Western Australia, Australia
    Biol Reprod 80:1146-51. 2009
  7. ncbi request reprint Effect of ram exposure at the end of progestagen treatment on estrus synchronisation and fertility during the breeding season in ewes
    A C O Evans
    Department of Animal Science and Production, Centre for Integrative Biology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
    Anim Reprod Sci 84:349-58. 2004
  8. ncbi request reprint The effects of ram exposure during progestagen oestrus synchronisation and time of ram introduction post progestagen withdrawal on fertility in ewes
    P A R Hawken
    School of Agriculture, Food and Rural Development, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK
    Theriogenology 63:860-71. 2005

Detail Information

Publications8

  1. ncbi request reprint The introduction of rams induces an increase in pulsatile LH secretion in cyclic ewes during the breeding season
    P A R Hawken
    School of Animal Biology, University of Western Australia, Crawley, WA 6009, Australia
    Theriogenology 68:56-66. 2007
    ..01); EL, ML and LL ewes also had an increase in mean LH concentration (P<0.05). In conclusion, ram introduction to cyclic ewes stimulated an increase in pulsatile LH secretion, independent of ewe genotype or stage of the estrous cycle...
  2. ncbi request reprint Short term, repeated exposure to rams during the transition into the breeding season improves the synchrony of mating in the breeding season
    P A R Hawken
    School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
    Anim Reprod Sci 106:333-44. 2008
    ..In conclusion, repeated, short-term exposure of ewes to rams during the transition into the breeding season is an effective method of synchronising the distribution of mating during the breeding season...
  3. ncbi request reprint Prior exposure of maiden ewes to rams enhances their behavioural interactions with rams but is not a pre-requisite to their endocrine response to the ram effect
    P A R Hawken
    School of Agriculture, Food and Rural Development, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
    Anim Reprod Sci 108:13-21. 2008
    ..In conclusion, prior experience with rams is important in developing appropriate ewe-ram interactions but is not a pre-requisite to the endocrine response to the ram effect...
  4. doi request reprint Ram novelty and the duration of ram exposure affects the distribution of mating in ewes exposed to rams during the transition into the breeding season
    P A R Hawken
    Newcastle University, Newcastle upon Tyne, United Kingdom
    Anim Reprod Sci 111:249-60. 2009
    ..This distribution of mating in continuous ram exposed ewes can be further enhanced by periodic exposure to novel rams...
  5. doi request reprint Do cyclic female goats respond to males with an increase in LH secretion during the breeding season?
    P A R Hawken
    School of Animal Biology, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
    Anim Reprod Sci 112:384-9. 2009
    ..The high concentrations of progesterone in females in the mid-luteal phase appeared to block the male effect...
  6. doi request reprint Rapid induction of cell proliferation in the adult female ungulate brain (Ovis aries) associated with activation of the reproductive axis by exposure to unfamiliar males
    Penelope A R Hawken
    School of Animal Biology, University of Western Australia, Western Australia, Australia
    Biol Reprod 80:1146-51. 2009
    ..The rapidity of this response contrasts with rodents, in which several days of exposure to male pheromones seem necessary for an effect on neurogenesis...
  7. ncbi request reprint Effect of ram exposure at the end of progestagen treatment on estrus synchronisation and fertility during the breeding season in ewes
    A C O Evans
    Department of Animal Science and Production, Centre for Integrative Biology, Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
    Anim Reprod Sci 84:349-58. 2004
    ..Unexpectedly, ewes that were bred had lower fertility in the +Ram groups than control groups...
  8. ncbi request reprint The effects of ram exposure during progestagen oestrus synchronisation and time of ram introduction post progestagen withdrawal on fertility in ewes
    P A R Hawken
    School of Agriculture, Food and Rural Development, University of Newcastle, Newcastle upon Tyne, NE1 7RU, UK
    Theriogenology 63:860-71. 2005
    ..This was partially overcome by introducing rams for breeding earlier (24 or 36 h compared to 48 h PSR) but the most dramatic decrease in fertility was due to a reduction in ovulation rate in the ram-exposed ewes...