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oai:docta.ucm.es:20.500.14352/1039582025-03-18T15:09:36Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Alba Rubio, Claudio author Castejón, David author Remiro, Víctor author Rodríguez Gómez, Juan Miguel author Sobrino, Odón J. author María, Julián de author Fumanal, Pilar author Fumanal, Antonio author Cambero Rodríguez, María Isabel author 2023-05-16 The metaphylactic use of antimicrobials in swine farms contributes to the emergence of antibiotic-resistant bacteria, which constitutes a major challenge for public health. Alternative strategies are required to eradicate their routine use. In a previous study, metaphylactic antimicrobials were replaced by the administration of Ligilactobacillus salivarius MP100 to sows and piglets for two years. This practice positively modified the fecal microbiota and metabolic profiles in the farm. In this work, the farm dataset was used to compare the productivity-related parameters between a 2-year period of routine metaphylactic antibiotherapy and the first 2 years of a replacement with the probiotic strain. The probiotic period improved these productivity-related parameters, from litter size to growth performance. In addition, samples of Longissimus lumborum, including skin and subcutaneous fat, were obtained from the animals ingesting the probiotic strain and controls (metaphylactic antibiotherapy) and analyzed for their pH, water holding capacity, composition, and metabolic profiling. The probiotic intake did not negatively affect the meat composition and was associated with an increase in inosine concentration and a slight tendency for increasing the intramuscular fat content. These factors are considered as biomarkers of meat quality. In conclusion, the substitution of metaphylactic antimicrobials with the administration of the probiotic strain was associated with beneficial productivity and meat quality outcomes. Alba, C., Castejón, D., Remiro, V., Rodríguez, J. M., Sobrino, O. J., de María, J., Fumanal, P., Fumanal, A., & Cambero, M. I. (2023). Ligilactobacillus salivarius MP100 as an Alternative to Metaphylactic Antimicrobials in Swine: The Impact on Production Parameters and Meat Composition. Animals : an open access journal from MDPI, 13(10), 1653. https://doi.org/10.3390/ani13101653 10.3390/ani13101653 https://hdl.handle.net/20.500.14352/103958 2076-2615 https://doi.org/10.3390/ani13101653 37238083 https://www.mdpi.com/journal/animals Ligilactobacillus salivarius MP100 as an Alternative to Metaphylactic Antimicrobials in Swine: The Impact on Production Parameters and Meat Composition