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 < 0.001) than that of the controls (41.94 ± 0.06°C). In conclusion, probiotic alone synchronized t
cloacal of the birds at day 21, and, in addition, decreased t
cloacal response most, followed by its coadministration with ZnGlu, the antioxidants may be beneficial in modulating daily rhythmicity of tcloacal and alleviating adverse effects of heat stress on broiler chickens during the hot‐dry season.
The aim of the study was to evaluate effects of fisetin and probiotic on erythrocyte
osmotic fragility (EOF), malondialdehyde (MDA) and superoxide dismutase (SOD) in broiler
chickens exposed to heat stress. Sixty day-old broilers were divided into: Group I
(control) given distilled water; Group II, fisetin (5 mg/kg); Group III, probiotic
Saccharomyces cerevisiae (4.125 × 106 cfu/100
ml); and Group IV, fisetin (5 mg/kg) + probiotic (4.125 ×
106 cfu/100 ml) orally for 7 days. Blood samples collected
from 42-day-old birds were evaluated for EOF, serum MDA concentration and SOD activity.
Percentage EOF at 0.5% NaCl was lower (P<0.05) in fisetin, probiotic
and fisetin + probiotic groups (34.26 ± 0.98%, 35.65 ± 0.81% and 34.25 ± 1.98%,
respectively) than in controls (48.42 ± 0.40%). The MDA concentrations in broiler chickens
administered with fisetin (14.37 ± 1.15 nmol/l), probiotic (5.66 ± 1.06
nmol/l) and fisetin + probiotic (4.136 ± 0.58 nmol/l)
were lower (P<0.05) than in controls (22.64 ± 2.95
nmol/l). Activities of SOD were higher (P<0.05) in
fisetin, probiotic and fisetin + probiotic broiler chickens (6.34 ± 0.24
IU/l, 5.67 ± 0.09 IU/l and 5.93 ± 0.13
IU/l, respectively) than in controls (5.37 ± 0.09
IU/l). Fisetin + probiotic ameliorated oxidative stress changes in
broiler chickens better than fisetin or probiotic alone. In conclusion, administration of
fisetin or probiotic and, especially their combination, decreased EOF, lipoperoxidation
and increased superoxide dismutase activity in broiler chickens exposed to heat
stress.
We studied the dietary effects of probiotic and fisetin supplementation on performance parameters, carcass characteristics and small intestinal morphology in broiler chickens. Sixty (one-day-old) Arbo Acre breed of broiler chickens were allotted into 4 groups of 15 each randomly: Group I, Control was administered only distilled water; Group II, fisetin (5 mg/kg); Group III, probiotic (4.125×106 cfu/100 mL); and Group IV, probiotic and fisetin (4.125×106 cfu/100 mL and 5 mg/kg, respectively) for the first one week of life. All administrations were performed orally through gavage. Broiler chickens supplemented with probiotic and probiotic+fisetin had greater feed intake significantly (P<0.05) at weeks 5 and 6, when compared respectively with those of the control and fisetin groups which had lesser feed intake values. Body weight gain was of great significance (P<0.05) in the probiotic-supplemented broiler chickens, while that of the control was less. Carcass quality of the probiotic-supplemented group was higher in significance (P<0.05) than any other treatment group which had lower qualities. The pH changes in the breast muscle was lesser significantly (P<0.05) in the probiotic+fisetin group, when compared with those of the control group which had greater changes. The villus height/crypt height ratio was higher in significance (P<0.05) in the treatment groups, while that of the control group was lower. In conclusion, dietary supplementation of probiotic may enhance broiler chickens’ productivity, by improving performance, carcass weight, pH, and small intestinal morphology as compared to fisetin supplementation.
There is dearth information on the role of fisetin as an antistress agent in ameliorating heat stress in broiler chickens. Here, we experimentally compared probiotic, an antioxidant and antistress agent, with fisetin, an antioxidant agent with little or no report on its antistress effect. Sixty-day-old broiler chickens (Arbo Acre breed) were allotted into 4 groups of 15 birds each as follows; control, fisetin, probiotic, and fisetin + probiotic groups, respectively. All administrations were performed orally through gavage for the treatment groups. The environmental and cloacal temperature (CT) parameters were measured bi-hourly at Days 21, 28, and 35 from 7:00 to 7:00 hr, during the period of study. The environmental parameters exceeded the thermoneutral zone for broiler chickens. The probiotic-supplemented group had the least overall mean CT values all through the experimental period. Based on our findings, fisetin was not a potent antistress agent in mitigating heat stress in birds.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.