Fecha/hora: 01/06/2024 19:15:49

Biblioteca(s): | INIA Tacuarembó.
Fecha corriente: | 02/06/2017
Fecha de la última actualización: | 02/06/2017
Autoria: | MONTOSSI, F.; LUZARDO, S.; CUADRO, R.; BRITO, G.; SAN JULIÁN, R.; SILVEIRA, C.; DEL CAMPO, M.
Afiliación: | FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO FELIPE LUZARDO VILLAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WASHINGTON ROBIN CUADRO LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUSTAVO WALTER BRITO DIAZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROBERTO SAN JULIAN SANCHEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA INES SILVEIRA ROJAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARCIA DEL CAMPO GIGENA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | The use of restricted grain supplementation to promote simultaneously beef production and healthy meat under grazing conditions.
Año de publicación: | 2011
Fuente/Imprenta: | In: International Congress of Meat Science and Technology (ICoMST), 57o., 7-12 August, Ghent-Belgium, 2011.
Idioma: | Inglés
Notas: | Poster session 8: Animal Nutrition effects on Meat Quality.

Contenido:

The use of restricted grain supplementation effects on animal performance, carcass weight, meat quality traits and fatty acids profile of intramuscular fat
was researched on finnishing steers under grazing conditions. The experiment lasted for 150 days, from 11th June to 9th December 2007, where twenty four
Uruguayan Hereford steers were assigned to different treatments (T) considering herbage allowance (HA) on pasture (P) and grain (ground sorghum) supplementation
(G) according to the liveweight (LW) of the animals. The treatments applied were a combination of P allowances and unique G supplementation level, being T1 (P at 4%
HA of LW); T2 (P at 2% HA of LW without G) and T3 (P at 2% HA of LW + G at 0.8% of LW). The increase in HA and G increased animal performance, ribeye area,
carcass weight and fatness, and pistola cuts and had limited influences on meat quality traits (marbling, pH, meat colour, tenderness). Intramuscular fat was affected
by T (T3>T1>T2; P<0.01). The concentrations of linolenic (18:3 n-3) was higher for P treatments (T1=T2>T3; P<00.1). However, linoleic acid (18:2 n-6)
concentration followed the pattern of T2>T1=T3 (P<0.01). The trend in the long chain arachidonic (20:4 n-6), eicosapentaenoic-EPA (20:5 n-3) and  decosapentaenoic-DPA (22:5 n-3) was similar between treatments, where the concentration was significantly higher for T2 in comparison with T1 and T3 (P<0.01),
being, in general, T1 higher than T3. The CLA, SFA, MUFA concentrations did not vary between T. However, levels of PUFA were T2>T1>T3 (P<0.01). Human health
recommendations for PUFA:SFA and ?6:?3 ratios are over 0.45 and below 4.0, respectively. The PUFA:SFA ration fell into the range of 0.11 to 0.25 (T2>T1>T3;
P<0.01), while ?6:?3 ratio was always below 4.0, ranged between 1.28 and 1.79, being T3>T1=T2 (P<0.01). This research group showed the benefits of using limited G
levels in promoting animal performance, productivity and carcass and meat quality traits under grazing conditions without affecting sustantially the wellknow
advantage of grass-fed beef for human health.

Palabras-Clave: | BEEF; FATTY ACID COMPOSITION; GRAIN; MEAT QUALITY; PASTURE.
Categoría del tema: | --
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/6798/1/The-use-2011-ICOMST.pdf
Registro original: | INIA Tacuarembó (TBO)
Ejemplares: | TBO - (102039-1) - INI - PS - DD -  -  -  - DIS