Daily rhythms of cloacal temperature in broiler chickens of different age groups administered with zinc gluconate and probiotic during the hot-dry season
| Autor: | Joseph Olusegun Ayo, Victory Osirimade Sumanu, Friday Ocheja Zakari, Ndazo Salka Minka, Tagang Aluwong, Benjamin O. Ocheja |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Veterinary medicine Hot Temperature animal structures Physiology animal diseases chemistry.chemical_element Ageing and Degeneration Zinc Biology Gluconates Thermoregulation Body Temperature law.invention heat stress 03 medical and health sciences Probiotic hot‐dry season Age groups Stress Physiological law Physiology (medical) Dry season Broiler chick Animals Periodic model Nutrition Original Research Probiotics Age Factors 0402 animal and dairy science Broiler food and beverages Humidity 04 agricultural and veterinary sciences 040201 dairy & animal science Circadian Rhythm Heat stress 030104 developmental biology Broiler chickens chemistry embryonic structures zinc gluconate Chickens probiotic |
| Zdroj: | Physiological Reports |
| ISSN: | 2051-817X |
| DOI: | 10.14814/phy2.13314 |
| Popis: | The aim of the experiment was to evaluate effects of zinc gluconate (ZnGlu) and probiotic administration on the daily rhythm of cloacal temperature (t cloacal) in broiler chickens of different age groups during the hot‐dry season. One‐day‐old broiler chicks (n = 60) were divided into groups I–IV of 15 chicks per group, and treated for 35 days: Group I (control) was given deionized water; Group II, ZnGlu (50 mg/kg); Group III, probiotic (4.125 × 106 cfu/100 mL), and Group IV, ZnGlu (50 mg/kg) + probiotic (4.125 × 106 cfu/100 mL). Air dry‐bulb temperature (t db), relative humidity (RH), and temperature‐humidity index (THI) inside the pen, and t cloacal of each broiler chick were obtained bihourly over a 24‐h period; on days 21, 28, and 35 of the study. Values of tdb (32.10 ± 0.49°C), RH (49.94 ± 1.91%), and THI (38.85 ± 0.42) obtained were outside the thermoneutral zone for broiler chickens, and suggested that the birds were subjected to heat stress. Application of the periodic model showed disruption of daily rhythm of t cloacal in broilers on day 21, which was synchronized by probiotic administration. The administration of probiotics or ZnGlu + probiotics to a greater extent decreased the mesor and amplitude, delayed the acrophases of t cloacal in broilers, especially at day 35, as compared to the controls. Overall, the t cloacal values in broiler chickens administered with probiotic alone (41.25 ± 0.05°C) and ZnGlu + probiotic (41.52 ± 0.05°C) were lower (P |
| Databáze: | OpenAIRE |
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