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The Effect of Seasonal Changes (Photoperiod) on Histomorphometric and Histochemical Structure of Adrenal Gland in Sanjabi Sheep | ||
| تحقیقات دامپزشکی و فرآوردههای بیولوژیک | ||
| Article 7, Volume 38, Issue 3, October 2025, Pages 56-68 PDF (2.06 M) | ||
| Document Type: Full Research Paper | ||
| DOI: 10.22092/vj.2025.368455.2210 | ||
| Authors | ||
| vahab Jorfi1; Tayebeh Mohammadi* 2; Mehrdad Pooyanmehr1 | ||
| 1Razi university | ||
| 2Razi university Veterinary medicine | ||
| Abstract | ||
| Introduction: The adrenal gland undergoes structural and functional changes in response to environmental changes, including photoperiod. To date, no study has examined the structural changes of the sheep adrenal gland under short (during the breeding season) and long (during the non-breeding season) photoperiods.Objective: To compare the histometric, histological, and histochemical characteristics of the adrenal gland in Sanjabi sheep under short and long photoperiods.Methods: Adrenal glands were sampled and fixed from female Sanjabi sheep during short and long photoperiods. Tissue sections were prepared, stained, and examined using light microscopy. Findings: The thickness of the capsule, cortex, zona fasciculata, zona reticularis, and medulla diameter were greater during long photoperiods compared to short photoperiods (P<0.05). PAS staining intensity was higher in the zona fasciculata and zona reticularis during long photoperiods. Conclusion: Short photoperiod during the breeding season inhibits the adrenal cortex of female sheep. Further study of this gland under photoperiod changes may lead to new methods for sheep breeding and reproductive management. | ||
| Keywords | ||
| Adrenal; Breeding; Histology; Photoperiod | ||
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