Effect of season on physiological, biochemical, hormonal, and oxidative stress parameters of indigenous sheep

Effect of season on physiological, biochemical, hormonal, and oxidative stress parameters of indigenous sheep

This study was conducted to evaluate the impact of summer and winter season on physiological, biochemical, hormonal, and antioxidant parameters in Indigenous sheep. The research was carried out during summer and winter season. 8 adult apparently healthy female sheep (aged 2-4 years) of similar physi...

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Bibliographic Details
Published in:Veterinary World Vol. 10; no. 6; pp. 650 - 654
Main Authors: Rathwa, Sawankumar D, Vasava, A A, Pathan, M M, Madhira, S P, Patel, Y G, Pande, A M
Format: Journal Article
Language:English
Published: India Veterinary World 01-06-2017
Subjects:
Alanine
Alanine transaminase
Antioxidants
Aspartate transaminase
biochemical
Biochemistry
Blood
Calcium
Cholesterol
Cortisol
Creatinine
Glucose
Glutathione peroxidase
Health aspects
Heat stress
Heat tolerance
Humidity
indigenous sheep
Medical climatology
Medical research
Oxidative stress
Phosphorus
physiological
Physiological effects
Physiology
Potassium
Relative humidity
Seasons
Sheep
Skin
Sodium
Summer
Superoxide dismutase
Temperature effects
temperature humidity index
Thyroid hormones
Thyroxine
Transaminase
Triiodothyronine
Urea
Uric acid
Winter
indigenous sheep
temperature humidity index
biochemical
physiological
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Summary:This study was conducted to evaluate the impact of summer and winter season on physiological, biochemical, hormonal, and antioxidant parameters in Indigenous sheep. The research was carried out during summer and winter season. 8 adult apparently healthy female sheep (aged 2-4 years) of similar physiological status were selected. Daily ambient temperature and relative humidity were recorded to calculate the temperature-humidity index (THI). The THI value of summer and winter season were 82.55 and 59.36, respectively, which indicate extreme hot condition during summer season and extreme cold condition during winter season. Physiological parameters were recorded daily during the experimental periods. Blood samples were collected at weekly interval and analyzed for biochemical, hormonal, and antioxidant parameters. The results were analyzed using completely randomized design. From data obtained in this study, we found that higher THI during summer have significant effect over various physiological, biochemical, hormonal, and enzymatic indices of indigenous sheep. The physiological response such as rectal temperature, respiration rate (RR), pulse rate (PR), and skin temperature (ST) was increased significantly. We also found a significant increase in some biochemical parameters such as blood urea nitrogen (BUN), uric acid, creatinine (Cr), alanine transaminase (ALT), aspartate transaminase (AST), sodium (Na), and potassium (K). The level of cortisol hormone and superoxide dismutase (SOD), glutathione peroxidase (GPx), and lipid peroxidase (LPO) antioxidants increased significantly during summer. Whereas, some parameters such as glucose, cholesterol, calcium (Ca), inorganic phosphorus (IP), triiodothyronine (T ), and thyroxine (T ) were decreased significantly during summer season. It was concluded that the THI is a sensitive indicator of heat stress and is impacted by ambient temperature more than the relative humidity in Indigenous sheep. Higher THI is associated with significant increase in RT, RR, PR, ST, BUN, uric acid, Cr, ALT, AST, Na, K, cortisol, SOD, GPx, and LPO and with a significant decrease in glucose, cholesterol, Ca, IP, T and T .
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ISSN:0972-8988
2231-0916
DOI:10.14202/vetworld.2017.650-654