Fecha/hora: 12/06/2024 13:53:01

Biblioteca(s): 	INIA Treinta y Tres.	
Fecha corriente: 	27/09/2022	
Fecha de la última actualización: 	27/09/2022	
Autoria: 	MENEGASSI, S.R. DE O.; PEREIRA, G.R.; ROCHA, M.K.DA; KOETZ JR., C.; LOPEZ, L.F.D.; AUGUST, P.M.; MATTÉ, C.; GOMES, M.G.T.; DAL BEM, J. DE C.T.; CANOZZI, M.E.A.; BARCELLOS, J.O.J.	
Afiliación: 	SILVIO RENATO DE OLIVEIRA MENEGASSI, Department of Animal Science, Graduate Program in Animal Science, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 7712, 91540-000, Porto Alegre, RS, Brazil.; GABRIEL RIVAS PEREIRA, Department of Animal Science, Graduate Program in Animal Science, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 7712, 91540-000, Porto Alegre, RS, Brazil.; MARCELA KUCZYNSKI DA ROCHA, Department of Animal Science, Graduate Program in Animal Science, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 7712, 91540-000, Porto Alegre, RS, Brazil.; CELSO KOETZ JR., Department of Animal Science, Graduate Program in Animal Science, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. Animal Production Laboratory, College of Veterinary Medicine, University of Northern.; LUIS FELIPE DIAS LOPEZ, cDepartment of Administrative Sciences, Federal University of Santa Maria, RS, Brazil.; PAULINE MACIEL AUGUST, Graduate Program in Biological Sciences: Biochemistry, ICBS, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; CRISTIANE MATTÉ, Graduate Program in Biological Sciences: Biochemistry, ICBS, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. Graduate Program in Biological Sciences, Physiology, ICBS, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.; MÁRCIO GIANORDOLI TEIXEIRA GOMES, Department of Large Animal Clinics, Federal University of Tocantins, Araguaína, TO, Brazil; JULINI DE CÁSSIA TREVISAN DAL BEM, Department of Large Animal Clinics, Federal University of Tocantins, Araguaína, TO, Brazil; MARÍA EUGENIA ANDRIGHETTO CANOZZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JULIO OTÁVIO JARDIM BARCELLOS, Department of Animal Science, Graduate Program in Animal Science, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 7712, 91540-000, Porto Alegre, RS, Brazil.	
Título: 	Influence of tropical, subtropical, and temperate climate conditions on seminal redox status and sperm quality parameters in breeding bulls.	
Año de publicación: 	2022	
Fuente/Imprenta: 	Journal of Thermal Biology, October 2022, Volume 109, Article number 103319. doi: https://doi.org/10.1016/j.jtherbio.2022.103319	
Páginas: 	12 p.	
DOI: 	10.1016/j.jtherbio.2022.103319	
Idioma: 	Inglés	
Contenido: 	ABSTRACT: This study evaluated the effect of climate change on andrological parameters of beef bulls raised under tropical, subtropical, and temperate conditions. Bull ejaculates were collected to evaluate seminal quality parameters, sperm membrane integrity, and redox status (SOD; GPx; GSH; GRx; CARB; DCF; and SOD/GPx ratio). Bulls located in the temperate region showed a higher sperm motility rate and percentage of viable sperm (P <0.05). When evaluating regions independently, we observed a lower GPx activity from animals in the tropical region (P <0.05). In contrast, we found that SOD and GRx activities, GSH content, and CARB oxidative levels were higher in the tropical region, while oxidation values of DCF were lower (P <0.05). Braford bulls showed higher CARB and DCF levels (1.23 ±0.61 nmol/mg and 1453.60 ±828.63 nmol/mg, respectively) compared to Hereford bulls (1.00 ±0.43 nmol/mg and 1138.70 ±423.24 nmol/mg, respectively) in the temperate region. However, Nellore bulls showed higher DCF levels (650.50 ±401.53 nmol/mg) than Braford bulls (409.40 ±286.97 nmol/ mg). In addition, the SOD/GPx ratio was lower in Braford (12.44 ±7.64 U/mg) compared to Nellore bulls in tropical conditions (87.25 ±2.83 U/mg). A positive correlation was found in temperate conditions between DCF levels, SOD, and GRx activities (0.51, 0.58; P <0.01, respectively), as well as in subtropical conditions between DCF levels and GRx activity (0.53; P <0.01). A negative correlation between the temperature-humidity index and CARB content was found in subtropical and tropical regions (?0.44; P <0.01). We concluded that Braford breeds showed lower seminal motility, DCF contents and SOD/GPx ratios compared to Nellore bulls in tropical climate conditions. Finally, in temperate environmental conditions, Braford bulls also showed lower seminal motility but higher levels of CARB and DCF contents compared to Hereford bulls. Therefore, the existence of climatic differences between the temperate and tropical regions evaluated affected Braford bulls? seminal motility and seminal redox homeostasis.	
Palabras-Clave: 	ANIMAL ADAPTATION; BULLS; ENZYME ACTIVITY; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL; PLATAFORMA DE SALUD ANIMAL; ROS; TEMPERATURE-HUMIDITY INDEX.	
Categoría del tema: 	L10 Genética y mejoramiento animal	
Registro original: 	INIA Treinta y Tres (TT)	
Ejemplares: 	TT - (103983-1) - PXI - AP - DD - JOURNAL-THERMAL-BIOLOGY-2022-103319 -  -  - DIS