Impacts of Probiotic feeding on Behavior and Welfare related parameters of Heat Stressed Broilers | ||||
| SVU-International Journal of Veterinary Sciences | ||||
| Article 9, Volume 4, Issue 1 - Serial Number 7, March 2021, Page 87-96 PDF (319.46 K) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/svu.2021.58578.1101 | ||||
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| Authors | ||||
Eslam Khalifa Hassan Ahmed 1; Moataz Ahmed Abdel-Rahman  2; Khaled Ghareeb1
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| 1Department of Animal Behavior and Management, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt | ||||
| 2Dept. of Behavior, management and animal wealth, faculty of veterinary medicine, Minia university, Minia, Egypt | ||||
| Abstract | ||||
| This study was performed to detect the efficacy of probiotic (PROBAC plus) as anti-stress on behavior and welfare of heat-stressed broilers (32-35oc) from age 22d to 42d. One-hundred twenty chick were divided into 4 groups. The first group was control (basal diet), second was broilers reared at high temperature (basal diet), third was broilers reared at high temperature (basal diet + Probiotic) and fourth was probiotic group (basal diet + probiotic). Behavioral patterns of broilers were recorded from week 4 till the end of the experiment. At last day of experiment, 10 birds from each group were slaughtered to collect blood samples. Blood films were stained for measuring heterophils / lymphocytes (H / L) ratio. Serum cortisol was measured. The results showed that feeding, comfort behaviors, and movement activities of heat-stressed broilers were decreased while the drinking frequency was increased. Heat-stressed birds showed higher H / L ratio and cortisol concentration. Addition of probiotic either to diets of birds reared with or without stress improved some behaviors of birds and decreased H / L ratio and cortisol hormone. These results suggest that feeding of probiotic can be a useful tool to counteract the adverse effects of heat stress in broiler industry. | ||||
| Keywords | ||||
| Behavior; Welfare; Broilers; Heat Stress; Probiotic | ||||
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