Fecha/hora: 03/06/2024 16:51:44

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	22/11/2021	
Fecha de la última actualización: 	22/11/2021	
Autoria: 	SCHILD, C.; BOABAID, F.; MACHADO, M.; SARAVIA, A.; OLIVEIRA, L.G.S.; DIAZ, S.; VILDOZA, A. L.; MARTÍNEZ, A.; MARTÍNEZ, R.; BARROS, S.S.; RIET-CORREA, F.	
Afiliación: 	CARLOS SCHILD, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIANA BOABAID, Polo de Desarrollo Universitario, Departamento de Patología, Facultad de Medicina Veterinaria, Universidad de la República, Tacuarembó, Uruguay; MIZAEL MACHADO DA COSTA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDERSON SARAVIA DE MELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIZ GUSTAVO SCHNEIDER DE OLIVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; SAULO SEBASTIAN DIAZ OLIVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANA LAURA VILDOZA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; AGUSTÍN MARTÍNEZ, Veterinario de Libre Ejercicio, Tacuarembó, Uruguay; RAFAEL MARTÍNEZ, Veterinario de Libre Ejercicio, Tacuarembó, Uruguay; SEVERO S. BARROS, Laboratorio de Patologia Veterinaria, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil; FRANKLIN RIET-CORREA AMARAL, Programa de Posgraduação Em Ciencia Animal Nos Trópicos, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, Brazil.	
Título: 	Nierembergia rivularis poisoning in cattle.	
Año de publicación: 	2021	
Fuente/Imprenta: 	Toxicon, December 2021, Volume 204, Pages 21- 30. doi: https://doi.org/10.1016/j.toxicon.2021.10.009	
ISSN: 	0041-0101	
DOI: 	10.1016/j.toxicon.2021.10.009	
Idioma: 	Inglés	
Notas: 	Article history: Received 16 August 2021; Received in revised form 19 October 2021; Accepted 20 October 2021; Available online 26 October 2021.
Corresponding authors: Riet-Correa, F.; Programa de Posgraduação Em Ciencia Animal Nos Trópicos, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Salvador, Brazil; email:franklinrietcorrea@gmail.com
 Schild, C.O.; Instituto Nacional de Investigación Agropecuaria (INIA), Plataforma de Investigación en Salud Animal (PSA), Estación Experimental (EE) Tacuarembó, Ruta 5, km 386, Tacuarembó, Uruguay; email:cschild@inia.org.uy	
Contenido: 	ABSTRACT. - Nierembergia rivularis causes enzootic calcinosis (EC) in sheep. In this work, we describe EC caused by N. rivularis in cattle. For 3 years cattle grazing in 7 paddocks were evaluated. Cows with clinical signs compatible with EC were detected in only one paddock with a morbidity of 9.4%, 24.5%, and 34.5% during the summer of 2019, 2020, and 2021, respectively. Affected cows weighed 55 kg less (p < 0.01) than cows without signs of the same paddock, and 19.6% of these cows had hypercalcemia and/or hyperphosphatemia. Typical soft tissue calcification was observed in 3 autopsied cows. Additionally to the arterial calcification, 2 cows had multiple mineralized foci in several veins. In the Paddock A where EC occurred, the pasture contained 7?12% N. rivularis. In the other 6 paddocks (Paddocks B-G) where EC had not occurred, the pasture had 0.2?3.5% N. rivularis. Cows grazing in Paddock A had &#8764;30% lower pregnancy rates than cows from Paddocks B-G. At the slaughterhouse, the carcasses of 45 cows from Paddock A weighed 17.6% (p < 0.01) less than 93 carcasses of cows from Paddocks B-G. Furthermore, the carcasses of cows from Paddock A were classified as low quality. Eight cows with EC signs from Paddock A and 10 cows without EC signs from Paddocks B-G were removed to a Lolium multiflorum pasture. After 120 days of grazing, the cows from Paddock A gained 45.2% less (p < 0.01) live weight than cows from Paddocks B-G. Poisoning with N. rivularis may cause significant economic losses in Uruguay due to low fertility rates and weight gain of affected cattle. © 2021 Elsevier Ltd	
Palabras-Clave: 	Cattle; Enzootic calcinosis; Nierembergia rivularis.	
Thesagro: 	URUGUAY.	
Categoría del tema: 	L01 Ganadería	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (102842-1) - PXI - AP - DD - PP/Toxicon/2021 -  -  - DIS