Fecha/hora: 16/06/2024 09:24:50

Biblioteca(s): 	INIA Las Brujas; INIA Tacuarembó.	
Fecha corriente: 	21/12/2020	
Fecha de la última actualización: 	21/12/2020	
Autoria: 	FERRINHO, A.M.; PERIPOLLI, E.; BANCHERO, G.; PEREIRA, A.S.C.; BRITO, G.; LA MANNA, A.; FERNANDEZ, E.; MONTOSSI, F.; KLUSKA, S.; MUELLER, L.F.; BERCHIELLI, T.T.; BALDI, F.	
Afiliación: 	ADRIELLE MATIAS FERRINHO, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil; Instituto Nacional de Ciência e Tecnologia-Ciencia Animal, Viçosa, MG, Brazil; ELISA PERIPOLLI, Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP, Brazil; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANGÉLICA SIMONE CRAVO PEREIRA, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil; GUSTAVO WALTER BRITO DIAZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE GENARO FERNANDEZ RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SABRINA KLUSKA, Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP, Brazil; LENISE FREITAS MUELLER, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil; TELMA TERESINHA BERCHIELLI, Dpto Zootecnia, Fac. Ciências Agrárias e Veterinárias, Univ. Estadual Paulista, SP, Brazil; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, Brasília, DF, Brazil; Instituto Nacional de Ciência e Tecnologia-Ciencia Animal, Viçosa, MG, Brazil; FERNANDO SEBASTIAN BALDI REY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.	
Título: 	Effect of growth path on carcass and meat-quality traits of Hereford steers finished on pasture or in feedlot.	
Año de publicación: 	2020	
Fuente/Imprenta: 	Animal Production Science, 2020, Volume 60, Issue 2, Pages 323-332. Doi: https://doi.org/10.1071/AN18075	
ISSN: 	1836-0939	
DOI: 	10.1071/AN18075	
Idioma: 	Inglés	
Notas: 	Article history: Received 30 January 2018 / Accepted 14 May 2019 / Published online 4 December 2019.
Funding information: 
This work was supported by Sao Paulo Research Foundation (FAPESP grant #2016/22022-4 and #2011/21241-0), Brazil, and the National Institute of Agricultural research (INIA) of Uruguay.	
Contenido: 	ABSTRACT.
The objective of this study was to evaluate the effect of nutritional management during rearing and finishing phases on beef fatty acid composition, and carcass and beef quality traits of Hereford cattle. The study used 240 castrated male calves weaned at 8 months of age, and with an average weight of 170 ± 17 kg. After weaning, the experiment was divided in to three phases in a 4 × 2 factorial design: a 93-day winter period with four treatment groups (on pasture or in feedlot and at high or low feeding levels); a 196-day compensatory-growth phase on pasture; and a finishing phase either on pasture or in feedlot. Animals were slaughtered when each group attained a mean liveweight of 500 kg. The winter growth × finishing management interaction significantly affected hot carcass weight (P = 0.0029). There was no differences observed for feedlot-finished steers, but for pasture-finished steers, those pasture-reared had higher hot carcass weight (kg) than those feedlot-reared (low pasture 256.30 ± 1.60, high pasture 253.72 ± 1.60, low feedlot 249.85 ± 1.66, high feedlot 247.60 ± 1.62). Feedlot-finished steers showed higher (P < 0.05) mean values than pasture-finished steers for ribeye area (55.61 ± 0.69 cm2 vs 53.18 cm2), backfat thickness (8.62 ± 0.32 mm vs 6.21 mm), marbling score (237.97 ± 13.06 vs 171.70) and final pH (5.53 ± 0.02 vs 5.48). Additionally, feedlot-finished steers raised in feedlot during the winter-growth period displayed the heaviest hindquarter cuts. Meat from pasture-finished steers had lower (P < 0.05) shear-force values than from feedlot-finished cattle (2.95 ± 0.18 vs 3.66 ± 0.17 kg), and when reared on either high or low pasture during winter-growth, they showed the highest (P < 0.05) conjugated linoleic acid (cis-9, trans-11) and n-3 polyunsaturated fatty acid concentrations. In conclusion, growing and finishing cattle on pasture improved the carcass yield of retail cuts because of low fat concentration, and improved the nutritional and health value of the beef fatty acid profile. 
© 2020 CSIRO.	
Palabras-Clave: 	Carry-over effects; Fatty-acid profile; Finishing system; Growth-out.	
Categoría del tema: 	L01 Ganadería	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (102117-1) - PXI - AP - DD - PP/ANIMAL PRODUCTION SCIENCE/2020 -  -  - DIS
TBO - (103360-1) - PXI - AP - DD - PP/ANIMAL PRODUCTION SCIENCE/2020 -  -  - DIS