Fecha/hora: 09/06/2024 21:25:42

Biblioteca(s): 	INIA La Estanzuela.	
Fecha corriente: 	20/04/2022	
Fecha de la última actualización: 	20/04/2022	
Autoria: 	MORALES-PIÑEYRUA, J.; DAMIÁN, J.P.; BANCHERO, G.; BLACHE, D.; SANT' ANNA, A.C.	
Afiliación: 	JESSICA TATIANA MORALES PIÑEYRUA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN P. DAMIÁN, Departamento de Biociencias Veterinaria, Facultad de Veterinaria, Universidad de la República, Ruta 8 km 18, Montevideo, Uruguay.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DOMINIQUE BLACHE, School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Perth, Australia; ALINE C. SANT' ANNA, Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil. CNPq Researcher.	
Título: 	Metabolic profile and productivity of dairy Holstein cows milked by a pasture-based automatic milking system during early lactation: Effects of cow temperament and parity.	
Año de publicación: 	2022	
Fuente/Imprenta: 	Research in Veterinary Science, Volume 147, October 2022, Pages 50-59. Doi:https://doi.org/10.1016/j.rvsc.2022.04.001.	
ISSN: 	0034-5288	
DOI: 	10.1016/j.rvsc.2022.04.001.	
Idioma: 	Inglés	
Notas: 	Article history: Received 30 November 2021/ Revised 2 March 2022/ Accepted 8 April 2022/ Available online 12 April 2022/ Version of Record 19 April 2022.  Corresponding author:  E-mail address: jmorales@inia.org.uy (J.T. Morales-Pineyrúa).	
Contenido: 	Abstract: 
This study aimed to evaluate the influence of temperament and parity on milk production and metabolic responses of Holstein cows in a pasture-based automatic milking system. Thirty-five primiparous and 58 multiparous cows were classified as ?calm?, ?intermediate? or ?reactive? in each of the temperament tests conducted: milking reactivity (MR), race time (RT), flight speed, and flight distance. The milk yield and milk composition, as well as the blood biochemistry, were measured during the first 10 weeks of lactation. Primiparous cows produced less milk than multiparous cows (24.0 ± 0.8 vs. 34.2 ± 0.6 L/d, respectively, P ? 0.0001), while the serum beta-hydroxybutyrate concentration differences according to parity were not detected. Multiparous cows that were classified as ?reactive? on MR and RT tests produced 3 kg/d more milk and had greater concentrations of milk components than ?calm? cows (P ? 0.05). There was no such relation in primiparous cows. Also, cows scored ?reactive? on RT showed greater milking frequency (2.50 ± 0.05 vs. 2.35 ± 0.04 milking/d; P = 0.01) and blood beta-hydroxybutyrate concentrations (1.28 ± 0.09 vs. 0.92 ± 0.10 mmol/L; P = 0.04) than RT ?calm? cows. In conclusion, the cows' temperament was associated with milk production and metabolism, which depended on parity and the temperament tests used. Although productive performance was different between parities, lipomobilization was not.	
Palabras-Clave: 	BEHAVIOUR; DAIRY COWS; PASTURE; PERSONALITY; TRANSITION PERIOD.	
Thesagro: 	VACAS LECHERAS.	
Categoría del tema: 	L01 Ganadería	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (103541-1) - PXI - AP - DD - PP/RVS/2022/Morales -  -  - DIS