نوع مقاله : مقاله کامل
نویسندگان
1 دانشگاه رازی
2 دانشگاه رازی دانشکده دامپزشکی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
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.
کلیدواژهها [English]
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