Fecha/hora: 13/06/2024 08:37:53

Biblioteca(s): 	INIA Tacuarembó.	
Fecha corriente: 	21/02/2014	
Fecha de la última actualización: 	08/08/2019	
Autoria: 	ANDRIGHETTO CANOZZIA, M.E.; MEDEROS, A.; MANTECA, X.; TURNER, S.; MCMANUS, C.; ZAGO, D.; JARDIM BARCELLOS, J.O.	
Afiliación: 	MARÍA EUGENIA ANDRIGHETTO CANOZZIA, Department of Animal Science, Federal University of Rio Grande do Sul.; AMERICA ESTHER MEDEROS SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; XAVIER MANTECA, Department of Animal and Food Science, School of Veterinary Science, Universitat Autònoma de Barcelona.; SIMON TURNER, Animal and Veterinary Sciences Group, Scotland's Rural College.; CONCEPTA MCMANUS, Institute of Biological Sciences, University of Brasilia.; DANIELE ZAGO, Department of Animal Science, Federal University of Rio Grande do Sul.; JÚLIO OTÁVIO JARDIM BARCELLOS, Department of Animal Science, Federal University of Rio Grande do Sul.	
Título: 	A meta-analysis of cortisol concentration, vocalization, and average daily gain associated with castration in beef cattle.	
Año de publicación: 	2017	
Fuente/Imprenta: 	Research in Veterinary Science, 2017, no. 114, p. 430-443.	
DOI: 	10.1016/j.rvsc.2017.07.014	
Idioma: 	Inglés	
Notas: 	Article history: Received: 21 December 2016 // Received in revised form: 4 July 2017 // Accepted 16 July 2017	
Contenido: 	A systematic review and meta-analysis (MA) were performed to summarize all scientific evidence for the effects of castration in male beef cattle on welfare indicators based on cortisol concentration, average daily gain (ADG), and vocalization. We searched five electronic databases, conference proceedings, and experts were contacted
electronically. The main inclusion criteria involved completed studies using beef cattle up to one year of age undergoing surgical and non-surgical castration that presented cortisol concentration, ADG, or vocalization as an outcome. A random effect MA was conducted for each indicator separately with the mean of the control and
treated groups. A total of 20 publications reporting 26 studies and 162 trials were included in the MA involving 1814 cattle. Between study heterogeneity was observed when analysing cortisol (I2 =56.7%) and ADG (I2 =79.6%). Surgical and non-surgical castration without drug administration compared to uncastrated animals
showed no change (P?0.05) in cortisol level. Multimodal therapy for pain did not decrease (P ?0.05) cortisol concentration after 30 min when non-surgical castration was performed. Comparison between surgical castration, with and without anaesthesia, showed a tendency (P=0.077) to decrease cortisol levels after 120 min of intervention. Non-surgical and surgical castration, performed with no pain mitigation, increased and tended to increase the ADG by 0.814 g/d (P=0.001) and by 0.140 g/d (P=0.091), respectively, when compared to a non-castrated group. Our MA study demonstrates an inconclusive result to draw recommendations on preferred castration practices to minimize pain in beef cattle.	
Palabras-Clave: 	ANALGESIA; ANIMAL WELFARE; PAIN.	
Thesagro: 	BIENESTAR ANIMAL; CASTRACION; CIENCIAS VETERINARIAS; GANADO DE CARNE.	
Categoría del tema: 	L70 Ciencias veterinarias e higiene  - Aspectos generales	
Registro original: 	INIA Tacuarembó (TBO)	
Ejemplares: 	TBO - (28593-1) - PXI - AP - PP - PP/Research in Veterinary Science/114 -  -  - DIS