Prevención de la infección por Salmonella enterica subespecie enterica serotipo Enteritidis (Salmonella Enteritidis) en pollos mediante un bacteriófago

Abstract

Prevención de la infección por SuMMaRyInfections caused by Salmonella enterica subspecies enterica serotype Enteritidis (Salmonella Enteritidis) are an important cause of foodborne diseases, epidemiologically associated with the consumption of poultry products. Since antibiotic treatments cause the appearance of multiresistant strains, phages can be used as an alternative method for controlling S. Enteritidis in the poultry industry. The aim of this study was to evaluate the effect of the bacteriophage f3αSE on the incidence of Salmonella Enteritidis in chickens. 15 broiler chickens of 10 days of age were arranged into 5 groups. Groups A and B received 1 ml of a phage suspension orally containing 10 6 and 10 7 PFU/dose, respectively. Two hours later, the birds were challenged orally with 1 ml of Salmonella Enteritidis (4 x 10 6 CFU/dose). The control group (C) only received the phage (10 7 PFU/dose) and the control group D was infected with Salmonella Enteritidis (4 x 10 6 CFU/dose); group E remained untreated and constituted the healthy control. Ten days post challenge, the chickens were euthanised by CO 2 inhalation and samples of intestine and organs were obtained for the re-isolation of the challenge strain and phage. The incidence of infection by Salmonella Enteritidis decreased (P = 0.028) in the group that received 10 7 PFU/dose (7/15 chickens) unlike the group that received a 10 6 PFU dose (8/15 chickens). The decrease in the incidence of Salmonella Enteritidis in chickens by using the phage f3αSE, indicates that it is possible to consider such phages as useful agents in the control of Salmonella Enteritidis infections.Palabras clave: Salmonella, pollos, bacteriófagos.

Effects of Orally Administered Bdellovibrio bacteriovorus on the Well-Being and Salmonella Colonization of Young Chicks

“…Salmonella-specific bacterial viruses (bacteriophages) have been used both prophylactically (8,9) and therapeutically (3,7,59) to prevent/reduce the colonization of the chicken gastrointestinal tract. The efficacy of bacteriophage treatment in young birds (less than 30 days of age) varied from modest (21) to moderate reductions of 1 to 2 log 10 CFU g Ϫ1 cecal contents (7).…”

Suplementación alimenticia con promotores de crecimiento en pollos de engorde Cobb 500

“…La porción aniónica (carga negativa) del AO permanece atrapada en la bacteria difundiéndose libremente en su forma no disociada. La acumulación de estos aniones, se hace tóxica para la bacteria siendo capaz de inhibir sus reacciones metabólicas, reduciendo la capacidad de síntesis y finalmente la destrucción de sus membranas internas [15][16][17][18] . Basados en la amplia literatura existente, y habiendo determinado que aún existen algunos vacíos de conocimiento y aplicación, que permitan suplementar de manera más económica la cría de pollos de engorde, se vio por conveniente realizar la presente investigación, con el objetivo de evaluar la suplementación alimenticia con promotores de crecimiento en pollos de engorde Cobb 500.…”

Seasonal changes in bird communities on poultry farms and house sparrow—wild bird contacts revealed by camera trapping

“…Both migratory and resident birds can be carriers of pathogens either directly or by exposure in contaminated environments and by Borie et al ( 43 ) by contaminating resources, such as water or feed, with their droppings. Here we have detected few migratory or partially migratory birds on farm visits which in turn underlines the potential bridge host role of sparrows ( 18 ).…”