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Seasonal Variation in Testicular Blood Flow Dynamics and Their Relation to Systemic and Testicular Oxidant/antioxidant Biomarkers and Androgens in Rams by Mohamed G. Hedia; Mohamed S. El‐Belely; Sayed T. Ismail; Amal M. Abo El‐Maaty is a Medicine article available to read on EtoBox.

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## Abstract The environmental temperature increased during summer and decreased during winter to the limits that might negatively affect animal and human reproduction. The responses of Egyptian rams to either hot or cold climatic conditions were studied in six mature rams subjected to weekly testicular Doppler ultrasonographic examination, blood sampling, seminal plasma collection and semen evaluation. The maximum environmental temperature and the relative humidity were used to classify the climatic condition according to the heat stress equation of sheep into hot months where temperature–humidity index (THI) was >26 (31.67 ± 0.54), and cold months where THI was <22 (18.39 ± 0.41). Testosterone, estradiol, superoxide dismutase (SOD), glutathione peroxidase (GPX) and lipid peroxide product (malondialdehyde, MDA) were measured in both blood and seminal plasma, while catalase (CAT) and reduced glutathione (GSH) were measured in blood and seminal plasma, respectively. Results revealed that, during the hot months, rams displayed significantly decreased testicular blood flow, increased seminal plasma MDA, decreased seminal plasma (SOD, GPx and GSH) and blood CAT antioxidant enzymes. The

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Author

Mohamed G. Hedia; Mohamed S. El‐Belely; Sayed T. Ismail; Amal M. Abo El‐Maaty

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0936-6768)

Published

2020

Language

EN

Field

Medicine (Health Sciences)