Fecha/hora: 16/06/2024 10:50:57

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	15/11/2023	
Fecha de la última actualización: 	15/11/2023	
Autoria: 	GARCÍA-ROCHE, M.; TALMÓN, D.; CAÑIBE, G.; ASTESSIANO, A.L.; MENDOZA, A.; CASSINA, A.; QUIJANO, C.; CARRIQUIRY, M.	
Afiliación: 	MERCEDES GARCÍA-ROCHE, Facultad de Agronomía, Dpto. Producción Animal y Pasturas, Universidad de la República, Montevideo, Uruguay; Facultad de Medicina, Centro de Investigaciones Biomédicas (CEINBIO), Dpto. Bioquímica, Universidad de la República, Montevideo; DANIEL TALMÓN, Facultad de Agronomía, Departamento de Producción Animal y Pasturas, Universidad de la República, Montevideo, Uruguay; GUILLERMO CAÑIBE, Facultad de Agronomía, Departamento de Producción Animal y Pasturas, Universidad de la República, Montevideo, Uruguay; ANAL LAURA ASTESSIANO, Facultad de Agronomía, Departamento de Producción Animal y Pasturas, Universidad de la República, Montevideo, Uruguay; ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ADRIANA CASSINA, Facultad de Medicina, Centro de Investigaciones Biomédicas (CEINBIO), Departamento de Bioquímica, Universidad de la República, Montevideo, Uruguay; CELIA QUIJANO, Facultad de Medicina, Centro de Investigaciones Biomédicas (CEINBIO), Departamento de Bioquímica, Universidad de la República, Montevideo, Uruguay; MARIANA CARRIQUIRY, Facultad de Agronomía, Departamento de Producción Animal y Pasturas, Universidad de la República, Montevideo, Uruguay.	
Título: 	Hepatic metabolism of grazing cows of two Holstein strains under two feeding strategies with different levels of pasture inclusion.	
Año de publicación: 	2023	
Fuente/Imprenta: 	PLoS ONE, October 2023, Volume 18, Issue 10, e0290551. https://doi.org/10.1371/journal.pone.0290551  -- OPEN ACCESS.	
ISSN: 	1932-6203	
DOI: 	10.1371/journal.pone.0290551	
Idioma: 	Inglés	
Notas: 	Article history: Received March 22 2023; Accepted August 9 2023; Published October 26 2023. -- Correspondence: García-Roche, M.; Facultad de Agronomía, Departamento de Producción Animal y Pasturas, Universidad de la República, Montevideo, Uruguay; email:mercedesg@fagro.edu.uy  -- 
Editor: Arda Yildirim, Tokat Gaziosmanpasa University: Tokat Gaziosmanpasa Universitesi, TURKEY. -- FUNDING:  M. García-Roche was supported by Comisión Académica de Posgrados - Universidad de la República fellowship BDDX_2018_1#49004502. D. Talmón was supported by Agencia Nacional de Investigación e Innovación (ANII) fellowship POS_NAC_2017_1_141266. A. Cassina and C. Quijano were funded by grants of the Espacio Interdisciplinario - Centros, Universidad de la República 2015 and Comisión Sectorial de Investigación Científica (CSIC) grupos I+D 2022 (22620220100012UD). A. Cassina was also supported by the grant Comisión Sectorial de Investigación Científica (CSIC) grupos I+D 2014 (767). The project was funded by Comisión Sectorial de Investigación Científica (CSIC) of the Universidad de la República CSIC I+D 2018 ID 103 to M. Carriquiry and C. Quijano as well as by Agencia Nacional de Investigación e Innovación INNOVAGRO 2018: FSA_1_2018_1_152220 to M. Carriquiry and A. Cassina. A. Mendoza received funding from the project PL_21_0_00 of Instituto Nacional de Investigación Agropecuaria. -- Data Availability: All relevant data are within the paper and its Supporting Information files (https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0290551#sec023 ). -- Document type: Article Gold Open Access. -- LICENSE: This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ ). --	
Contenido: 	ABSTRACT.- The objective of the study was to characterize adaptations of hepatic metabolism of dairy cows of two Holstein strains with varying proportions of grazing in the feeding strategy. Multiparous autumn calving Holstein cows of New Zealand (NZH) and North American (NAH) strains were assigned to a randomized complete block design with a 2 x 2 factorial arrangement with two feeding strategies that varied in the proportions of pasture and supplementation: maximum pasture and supplementation with a pelleted concentrate (MaxP) or fixed pasture and supplementation with a total mixed ration (FixP) from May through November of 2018. Hepatic biopsies were taken at - 45 ± 17, 21 ± 7, 100 ± 23 and 180 ± 23 days in milk (DIM), representing prepartum, early lactation, early mid-lactation and late mid-lactation. The effects of DIM, feeding strategy (FS), strain and their interactions were analyzed with mixed models using repeated measures. Cows of both strains had similar triglyceride levels, mitochondrial function and carnitine palmitoyltransferase activity in liver during lactation. However, there was an effect of DIM and FS as liver triglyceride was higher for the MaxP strategy at 21 DIM and both mitochondrial function and carnitine palmitoyltransferase activity in liver were lower for the MaxP strategy at 21 DIM. Hepatic mitochondrial function and acetylation levels were affected by the interaction between strain and feeding strategy as both variables were higher for NAH cows in the MaxP strategy. Mid-lactation hepatic gene expression of enzymes related to fatty acid metabolism and nuclear receptors was higher for NZH than NAH cows. This work confirms the association between liver triglyceride, decreased hepatic mitochondrial function and greater mitochondrial acetylation levels in cows with a higher inclusion of pasture and suggests differential adaptative mechanisms between NAH and NZH cows to strategies with varying proportions of grazing in the feeding strategy. Copyright: © 2023 García-Roche et al.	
Palabras-Clave: 	Animals; Carnitine O-Palmitoyltransferase; Cattle; Diet; Dietary Supplements; SISTEMA LECHERO - INIA.	
Categoría del tema: 	L01 Ganadería	
URL: 	https://doi.org/10.1371/journal.pone.0290551	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (103717-1) - PXI - AP - DD - PLoS ONE/2023 -  -  - DIS