Research Note: The effects of a Lactobacillus helveticus ATCC 15009-derived postbiotic mitigating Salmonella Gallinarum colonization in commercial layer chicks.

Autor:	Ribeiro GC; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil. Electronic address: costa.ribeiro@unesp.br., Mogollón-García HD; Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil., Moraes ACI; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil., Dias GS; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil., Viana GB; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil., Milbradt EL; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil., Andreatti-Filho RL; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil., Okamoto AS; Veterinary Clinic Department, School of Veterinary Medicine and Animal Science of the São Paulo State University (FMVZ/ UNESP), Botucatu, São Paulo, Brazil.
Jazyk:	angličtina
Zdroj:	Poultry science [Poult Sci] 2023 Dec; Vol. 102 (12), pp. 103095. Date of Electronic Publication: 2023 Sep 19.
DOI:	10.1016/j.psj.2023.103095
Abstrakt:	This study aimed to assess the effects of a Lactobacillus helveticus ATCC 15009-derived postbiotic in mitigating experimental Salmonella Gallinarum infection. For this purpose, a sample of Lactobacillus sp. was inoculated in 2 different media, each containing different postbiotics (sensitized and nonsensitized). Both inocula had their antagonistic effect over S. Gallinarum tested through the spot-on-the-lawn method. It revealed that the sensitized postbiotic had a higher action potential over Lactobacillus sp. than the nonsensitized one (P < 0.05). Then, 48 day of hatch chicks were divided into 4 groups: A = Lactobacillus sp. (10 9 CFU/mL) inoculum on the 18th day; B = Lactobacillus sp. (10 9 CFU/mL) inoculum on the 18th day and postbiotic inoculum on the 19th day; C = postbiotic inoculum on the 19th day; and D = sterile saline inoculum on 18th and 19th days. On the 21st day, all chicks were infected with S. Gallinarum (10 9 CFU/mL). On the 23rd day, the animals were euthanized by cervical dislocation, and the ceca and liver were aseptically removed. Bacterial count of S. Gallinarum with serial decimal dilution was performed with these organs. It revealed that the prophylactic treatment with the postbiotic that modulates the intestinal microbiota was as efficient as the probiotic administration in reducing S. Gallinarum in the cecum and liver of chicks (P < 0.05). These data point to a new range of alternatives for preventing S. Gallinarum, which might help the poultry industry produce safer food for human consumption. Competing Interests: DISCLOSURES The authors declare no conflict of interest that is relevant to the content of this article. (Copyright © 2023 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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