| Autor: |
Egbuniwe IC; a Department of Physiology, Faculty of Veterinary Medicine , Ahmadu Bello University , Zaria , Nigeria., Ayo JO; a Department of Physiology, Faculty of Veterinary Medicine , Ahmadu Bello University , Zaria , Nigeria., Kawu MU; a Department of Physiology, Faculty of Veterinary Medicine , Ahmadu Bello University , Zaria , Nigeria., Mohammed A; b Department of Human Physiology, Faculty of Human Medicine , Ahmadu Bello University , Zaria , Nigeria. |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of applied animal welfare science : JAAWS [J Appl Anim Welf Sci] 2018 Oct-Dec; Vol. 21 (4), pp. 334-346. Date of Electronic Publication: 2018 Feb 05. |
| DOI: |
10.1080/10888705.2018.1426000 |
| Abstrakt: |
Heat stress is a major problem in poultry production in tropical regions. Assessing the impact of thermally stressful environmental conditions on the welfare of broiler chickens is of great importance. Behavioral responses in a novel environment and hematology of broiler chickens administered with betaine and/or ascorbic acid (AA) during the hot-dry season were evaluated. Broiler chickens were randomly divided into four groups: Group I (control) was given sterile water, Group II was given betaine, Group III was given AA, and Group IV received betaine + AA orally and daily for 42 days. An open-field test was used to assess behavior. Hematological parameters were obtained using a hematology auto-analyzer. The natural environmental conditions were predominantly outside the thermoneutral zone for broiler chickens. Results demonstrated that treated groups exhibited improved ability to adjust faster to a new environment and better hematological responses than controls, evidenced by enhanced behavioral responses, oxygen-carrying capacity, and immune responses of broiler chickens under unfavorable environmental conditions. Betaine and/or AA administration to broiler chickens improved some behavioral responses, hemoglobin concentrations, packed cell volume, and total leukocyte count during the hot-dry season. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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