Impact of virginiamycin on the ruminal microbiota of feedlot cattle.

Autor:	Santos BP; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Lisbôa JAN; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Bessegatto JA; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Montemor CH; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Paulino LR; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Alfieri AA; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Weese JS; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa)., Costa MC; Department of Veterinary Clinical Studies (Santos, Lisbôa, Bessegatto, Montemor, Paulino) and Department of Preventive Veterinary Medicine (Alfieri, Costa), Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Department of Pathobiology, University of Guelph, Guelph, Ontario (Weese); Department of Veterinary Biomedical Sciences, University of Montreal, Saint-Hyacinthe, Quebec (Costa).
Jazyk:	angličtina
Zdroj:	Canadian journal of veterinary research = Revue canadienne de recherche veterinaire [Can J Vet Res] 2024 Oct; Vol. 88 (4), pp. 114-122.
Abstrakt:	Growth-promoting antibiotics have been used in cattle, but concern about antimicrobial overuse has prompted a re-evaluation of this practice. To evaluate changes in the ruminal microbiota of feedlot cattle by virginiamycin, a total of 76 crossbreed beef cattle from 2 batches of cattle at different sampling periods (B1 and B2) were divided into 2 groups: one receiving virginiamycin in their diet (ATB) and the other receiving the same diet without any growth promoter (CON). The use of virginiamycin was associated with significant changes in the diversity and composition of the ruminal microbiota of cattle in B1, but not in cattle in B2. Several bacterial taxa were significantly more abundant in samples from CON, e.g ., an unclassified genus of the TM7 phylum, whereas others were associated with the use of virginiamycin, e.g., Holdemania and Selenomonas spp. In conclusion, virginiamycin can affect bacterial diversity and composition in the rumen of feedlot cattle, but its effect is inconsistent in different seasons of the year. (Copyright and/or publishing rights held by the Canadian Veterinary Medical Association.)
Databáze:	MEDLINE
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