Alleviation of heat-stress-related physiological perturbations in growing rabbits using natural antioxidants

  • Ahmed H. Daader Zagazig University, Faculty of Agriculture, Dept. of Animal Production, 44511 Zagazig
  • Adham A. Al-Sagheer Zagazig University, Faculty of Agriculture, Dept. of Animal Production, 44511 Zagazig
  • Hassan A. Gabr Zagazig University, Faculty of Agriculture, Dept. of Animal Production, 44511 Zagazig
  • Elham A. Abd El-Moniem Zagazig University, Faculty of Agriculture, Dept. of Animal Production, 44511 Zagazig
Keywords: betaine, body temperature, gallic acid, lemongrass, extra virgin olive oil, stress hormones


The current study was performed to evaluate the effects of the dietary inclusion of extra virgin olive oil (EVOO), betaine (BET), lemongrass essential oil (LGEO), gallic acid (GA), vitamin C (VC) and vitamin E (VE) on different body temperature traits and stress hormone and glucose levels in heat-stressed growing rabbits. Rabbits were fed diets with no supplementation (control group) or supplemented with 15 g of EVOO, 400 mg of LGEO, 500 mg of GA, 1000 mg of BET, 500 mg of VC, or 200 mg of VE per kg of diet. All tested feed additives, especially EVOO, had a lowering effect on various rabbit temperature traits. Both triiodothyronine (T3) and tetraiodothyronine/thyroxine (T4) were increased (p<0.05) by the addition of BET, VC, EVOO, and VE. With the exception of the VC group, all dietary groups showed no significant changes in the insulin level compared to the control group level. In contrast, the cortisol and glucose levels were diminished (p<0.05) in all treated groups compared to the control levels. The results suggested that all tested supplementations had positive ameliorating effects on growing rabbits under a severe heat load in terms of lowered body temperatures and a favourable stress hormone balance, with the most favourable results found in the EVOO, VC, and BET supplementation groups.


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How to Cite
DaaderA. H., Al-SagheerA. A., GabrH. A., & Abd El-MoniemE. A. (2018). Alleviation of heat-stress-related physiological perturbations in growing rabbits using natural antioxidants. Spanish Journal of Agricultural Research, 16(3), e0610.
Animal production