Thomas D Siopes

Summary

Affiliation: North Carolina State University
Country: USA

Publications

  1. ncbi request reprint Spontaneous ovarian adenocarcinoma in the domestic turkey breeder hen (Meleagris gallopavo): effects of photoperiod and melatonin
    Christopher B Moore
    Department of Poultry Science, North Carolina State University, Raleigh, North Carolina 27695 7608, USA
    Neuro Endocrinol Lett 25:94-101. 2004
  2. doi request reprint Initiating egg production in turkey breeder hens: thyroid hormone involvement
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695, USA
    Poult Sci 89:2265-72. 2010
  3. ncbi request reprint Photoresponsiveness of turkey breeder hens changes during the egg-laying season: relative and absolute photorefractoriness
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, North Carolina 27695 7608, USA
    Poult Sci 82:1042-8. 2003
  4. ncbi request reprint Spontaneous recovery of photosensitivity by turkey breeder hens given prolonged exposure to long day lengths
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 84:1470-6. 2005
  5. ncbi request reprint Lighting for summer egg production by turkeys: day length and light intensity
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695, USA
    Poult Sci 86:2413-9. 2007
  6. doi request reprint Diurnal variation in the cellular and humoral immune responses of Japanese quail: role of melatonin
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Gen Comp Endocrinol 158:245-9. 2008
  7. doi request reprint Exposure duration to long day lengths associated with the expression of photorefractoriness in turkey breeder hens
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Poult Sci 88:191-8. 2009
  8. ncbi request reprint Circulating thyroid hormone levels in recycled turkey breeder hens during a short day prelighting period and renewal of photosensitivity for egg production
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, 27695 7608, USA
    Poult Sci 81:1342-6. 2002
  9. doi request reprint Initiation of egg production by turkey breeder hens: sexual maturation and age at lighting
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Poult Sci 89:1490-6. 2010
  10. ncbi request reprint Photorefractoriness in turkey breeder hens is affected by age and season
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 81:689-94. 2002

Collaborators

Detail Information

Publications22

  1. ncbi request reprint Spontaneous ovarian adenocarcinoma in the domestic turkey breeder hen (Meleagris gallopavo): effects of photoperiod and melatonin
    Christopher B Moore
    Department of Poultry Science, North Carolina State University, Raleigh, North Carolina 27695 7608, USA
    Neuro Endocrinol Lett 25:94-101. 2004
    ..The effect of photoperiod or melatonin treatments on ovarian adenocarcinoma in turkey breeder hens (Meleagris gallopavo) was investigated to evaluate the usefulness of this animal as a model for studying ovarian cancer...
  2. doi request reprint Initiating egg production in turkey breeder hens: thyroid hormone involvement
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695, USA
    Poult Sci 89:2265-72. 2010
    ..Taken together, these results suggest that there is ample physiological potential to substantially advance the age of photoinduced egg production in commercial flocks...
  3. ncbi request reprint Photoresponsiveness of turkey breeder hens changes during the egg-laying season: relative and absolute photorefractoriness
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, North Carolina 27695 7608, USA
    Poult Sci 82:1042-8. 2003
    ..Further, PRL and LH levels did not reflect the differences in egg production among the responder and nonresponder groups to changes in photoperiod...
  4. ncbi request reprint Spontaneous recovery of photosensitivity by turkey breeder hens given prolonged exposure to long day lengths
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 84:1470-6. 2005
    ..This response was independent of season of photostimulation, did not alter photoresponsiveness to shorten day lengths, and was preceded by a parabolic increase in plasma triiodothyronine...
  5. ncbi request reprint Lighting for summer egg production by turkeys: day length and light intensity
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695, USA
    Poult Sci 86:2413-9. 2007
    ..Egg weight was best at a reduced light intensity...
  6. doi request reprint Diurnal variation in the cellular and humoral immune responses of Japanese quail: role of melatonin
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Gen Comp Endocrinol 158:245-9. 2008
    ..The responses were inverse to one another during the daily light-dark cycle with the cellular response being maximal during the daily light period and the humoral response being maximal during the daily dark period...
  7. doi request reprint Exposure duration to long day lengths associated with the expression of photorefractoriness in turkey breeder hens
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Poult Sci 88:191-8. 2009
    ..It was concluded that programming of PR during late spring-summer season occurs after 9 wk of long day exposure, is not fully expressed by 12 wk of long days, and can be fully expressed by 20 wk of photostimulation...
  8. ncbi request reprint Circulating thyroid hormone levels in recycled turkey breeder hens during a short day prelighting period and renewal of photosensitivity for egg production
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, 27695 7608, USA
    Poult Sci 81:1342-6. 2002
    ..These results were consistent with a participation of plasma T3 in promoting photosensitivity and diminishing photorefractoriness in turkey hens during SD-induced recycling...
  9. doi request reprint Initiation of egg production by turkey breeder hens: sexual maturation and age at lighting
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Poult Sci 89:1490-6. 2010
    ..Photostimulation of fully photosensitive hens for a typical production period can occur as early as 24 wk of age. We demonstrated that the conventional age at lighting of 29 to 30 wk of age can be significantly advanced...
  10. ncbi request reprint Photorefractoriness in turkey breeder hens is affected by age and season
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 81:689-94. 2002
    ..7 wk. Percentage incidence of PR and duration of PR were similar in both seasons of the year. It was concluded that age and season could affect PR...
  11. ncbi request reprint Temporal characteristics and incidence of photorefractoriness in turkey hens
    T D Siopes
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 80:95-100. 2001
    ..In most hens, PR is not permanent...
  12. ncbi request reprint Improved effectiveness of artificial insemination of turkey hens associated with ahemeral light-dark cycles and age at photostimulation
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 78:902-5. 1999
    ..It may be concluded that AH lighting can dramatically improve the effectiveness of AI under certain adverse conditions, such as early age at lighting and reduced exposure of the hen to sperm...
  13. ncbi request reprint Intermittent lighting increases egg weight and facilitates early photostimulation of turkey breeder hens
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 78:1040-3. 1999
    ..Interestingly, the increased egg weight in the IL treatment persisted to the end of lay, well after IL had been switched to 16L:8D. Thus, IL lighting facilitated successful early lighting of hens...
  14. ncbi request reprint Ahemeral lighting of turkey breeder hens. 3. Temporary application and early age at lighting
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 78:387-91. 1999
    ..We concluded that temporary use of AH at the start of photostimulation is better than continuous use of AH throughout lay and resulted in improved reproductive performance of hens photostimulated at an early age...
  15. ncbi request reprint Absence of a seasonal effect on the critical day length for photorefractoriness in turkey breeder hens
    T D Siopes
    Department of Poultry Science, North Carolina State University, Raleigh 27695 7608, USA
    Poult Sci 77:145-9. 1998
    ..Results supported a static CDL for photorefractoriness and suggest that any daily photoperiod exceeding 12 h will activate processes leading to photorefractoriness, independent of season...
  16. ncbi request reprint Enhancement of cellular and humoral immunity following embryonic exposure to melatonin in turkeys (Meleagris gallopavo)
    C B Moore
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Gen Comp Endocrinol 143:178-83. 2005
    ..No effect was observed on bursal, thymic, splenic or body weights. These data suggest that embryonic exposure to melatonin enhances post-hatch immune development and responsiveness...
  17. ncbi request reprint Melatonin enhances cellular and humoral immune responses in the Japanese quail (Coturnix coturnix japonica) via an opiatergic mechanism
    C B Moore
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Gen Comp Endocrinol 131:258-63. 2003
    ..We conclude that melatonin enhances a cellular and humoral immune response in Japanese quail via an opiatergic mechanism...
  18. ncbi request reprint Immune function in turkey breeder hens during the short day prelighting period and renewal of photosensitivity for egg production
    C B Moore
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, North Carolina 27695 7608, USA
    Poult Sci 82:150-4. 2003
    ..We concluded that recycling of PR turkey hens was associated with altered cellular and humoral immune responses characterized by initial decline then recovery in both the light restriction and the postphotostimulation periods...
  19. ncbi request reprint Effect of melatonin supplementation on the ontogeny of immunity in the Large White turkey poult
    C B Moore
    Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, North Carolina 2 7695 7608, USA
    Poult Sci 81:1898-903. 2002
    ..Body weights were increased in melatonin treated poults as compared to controls. These data suggest that posthatch melatonin supplementation is beneficial to neonatal immune parameters and growth responses of Large White turkey poults...
  20. ncbi request reprint Pineal melatonin secretion, but not ocular melatonin secretion, is sufficient to maintain normal immune responses in Japanese quail (Coturnix coturnix japonica)
    C B Moore
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Gen Comp Endocrinol 126:352-8. 2002
    ..Removal of one third of the plasma melatonin (by ocular enucleation) is not sufficient to reduce cellular and humoral responses in the Japanese quail...
  21. ncbi request reprint Melatonin can produce immunoenhancement in Japanese quail (Coturnix coturnix japonica) without prior immunosuppression
    C B Moore
    Department of Poultry Science, North Carolina State University, Raleigh, NC 27695 7608, USA
    Gen Comp Endocrinol 129:122-6. 2002
    ..These data suggest that the immunoenhancing effect of melatonin is not limited to reconstitution of weakened immune systems, but can be observed in normal, immunologically unsuppressed birds...
  22. ncbi request reprint Experimental transmission of eastern equine encephalitis virus and Highlands J virus via semen of infected tom turkeys
    J S Guy
    Department of Microbiology, Pathology, and Parasitology, North Carolina State University, Raleigh 27606, USA
    Avian Dis 39:337-42. 1995
    ..These results indicate that semen is a potential vehicle for transmission of EEE virus and HJ virus...