Seasonal histomorphological studies on the thyrotrophs of Gaddi sheep


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Authors

  • S PARAMASIVAN
  • D N SHARMA

Keywords:

Animal reproduction, Histomorphology, Sheep, Thyrotrophs, TSH

Abstract

The cytoplasm i.e. granules of large, round or polyhedral TSH cells stained mildly or intensely with aniline blue, periodic acid Schiff and Gomori's aldehyde fuchsin stains. The number of thyrotrophs increased significantly during winter (210±12.74 cells/mm2) when compared with summer (126±12.24 cells/mm2). The average diameter of TSH-cells varied from 9.14±0.1l um during winter to 8.35±0.20 um during summer. Its nucleus measured 4.59±0.09 um during summer but enlarged to 4.86±0.08 um during winter. This physiological increase in size of the TSH cell and their population during winter might be associated with the increased BMR.

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Author Biographies

  • S PARAMASIVAN
    SRF (ICAR) TANUVAS, Chennai,
  • D N SHARMA
    Professor and Head, Department of Anatomy and Histology, College of Veterinary and Animal Sciences.

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Issue

Vol. 73 No. 2 (2003)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Animal Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

PARAMASIVAN, S., & SHARMA, D. N. (2014). Seasonal histomorphological studies on the thyrotrophs of Gaddi sheep. The Indian Journal of Animal Sciences, 73(2). https://epubs.icar.org.in/index.php/IJAnS/article/view/42755