Comparative assessment of growth performance of indigenous and cross-bred calves subjected to combined stressors (heat and nutritional)

This study evaluated the impact of combined stressors (heat and nutritional stresses) on the growth and adaptive capability of Sahiwal (SW) and Karan Fries (KF) calves during the summer season. Calves in each breed were randomly divided into four groups. In SW breed the groupings were as follows: SW...

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Bibliographic Details
Published in:International journal of biometeorology 2023-09, Vol.67 (9), p.1435-1450
Main Authors: Shashank, C. G., Prashant, R. G., Kumar, Parveen, Kulkarni, Nitish A., Tiwari, Manish, Jayakumar, S., Sejian, V.
Format: Article
Language:English
Subjects:
Animal Physiology
Biological and Medical Physics
Biophysics
Body temperature
Body weight
Earth and Environmental Science
Environment
Environmental Health
Gene expression
Growth factors
Growth hormones
Heat
Heat stress
Heat tolerance
Insulin
Insulin-like growth factor I
Insulin-like growth factors
Meteorology
Nutrient deficiency
Original Paper
Plant Physiology
Pulse rate
Summer
Temperature effects
Thyroid hormones
Thyroxine
Triiodothyronine
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Summary:This study evaluated the impact of combined stressors (heat and nutritional stresses) on the growth and adaptive capability of Sahiwal (SW) and Karan Fries (KF) calves during the summer season. Calves in each breed were randomly divided into four groups. In SW breed the groupings were as follows: SWC ( n  = 4; Sahiwal Control); SWHS ( n  = 4; Sahiwal Heat Stress); SWNS ( n  = 4; Sahiwal Nutritional Stress) and SWCS ( n  = 4; Sahiwal Combined Stresses). Likewise, in the KF breed, KFC ( n  = 4; Karan Fries Control); KFHS ( n  = 4; Karan Fries Heat Stress); KFNS ( n  = 4; Karan Fries Nutritional Stress), and KFCS ( n  = 4; Karan Fries Combined Stresses). Control (C) and Heat Stress (HS) calves were fed ad libitum while Nutritional Stress (NS) and Combined Stresses (CS) calves were fed restricted feed (50% of C calves of respective breed) to induce nutritional stress in both the breeds. SWHS, SWCS, KFHS, and KFCS were exposed to summer heat stress from 1000 to 1600 h. All growth and adaptation variables were recorded at fortnightly intervals. Respiration rate, pulse rate, and rectal temperature during the afternoon were significantly ( P  
ISSN:0020-7128
1432-1254
DOI:10.1007/s00484-023-02511-6