Efeitos do alho (allium sativum) in natura sobre salmonella infantis experimentalmente inoculada em frango de corte
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2015-07-15
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Universidade Federal de Goiás
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This study aimed to evaluate the effects of different doses of in natura garlic on the
control of Salmonella Infantis and their consequence on performance, fecal excretion
of Salmonella and blood parameters in experimentally inoculated broiler chickens. In
this experiment we used 256 one-day-old male chicks, distributed in a completely
randomized design with eight treatments, four replications with four replicates of eight
birds each. The birds were orally inoculated at one-day-old with 0.5 ml of buffered
saline, containing approximately 5.0 x 103 CFU / ml of Salmonella Infantis. Treatment
1 (T1) was the control group (Placebo); T2 - received garlic at a dose of 1.5%; T3 -
received garlic at a dose of 3.0%; T4 - received garlic at a dose of 4.5%; T5 – was
orally inoculated (Positive Control SI); T6 – was orally inoculated and treated with
1.5%; T7 – was orally inoculated and treated with 3.0%; T8 – was orally inoculated
and treated with 4.5%. The performance was measured at seven, 21 and 35 days. At
the days eight, 15 and 29 four birds for treatment were submitted to six hour fasting,
and then they were weighed, euthanized, necropsied, and the organs were collected for
weight determination and detection of Salmonella. Cloacal swabs were collected at
three, 13, and 28 days and blood samples were collected at 14 and 36 days of age, after
fasting for eight hours to evaluate blood parameters. At seven and 21 days, weight gain
and final weight were lower in birds fed 4.5% of garlic, and there was no significant
difference in the period of 1-35 days. The weight of the intestine and liver at 29 days
was higher in birds inoculated and treated with 3.0% of garlic. Spleen weight was
higher in birds inoculated at 29 days. Garlic did not inhibit Salmonella invasion in the
spleen at the doses used. We found garlic did not reduce the intestinal E. coli
population, but it reduced Salmonella. We observed garlic influenced cholesterol
levels. In conclusion, fresh garlic in natura at the doses used does not alter the
performance, as well as it does not inhibit the migration of Salmonella to the spleen;
however, it influences serum cholesterol levels and reduces Salmonella fecal excretion
of.
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MOTA, B. P. Efeitos do alho (allium sativum) in natura sobre salmonella infantis experimentalmente inoculada em frango de corte. 2015. 63 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2015.