Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains

Background: Rehydration of grains, such as corn and sorghum, is used to increase nutrient absorption. However, the effect of this practice on meat quality is poorly understood. Objective: To evaluate the effects of type of grain and processing on the meat quality of Nellore steers in a feedlot. Meth...

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Autores principales:	Fabiano A. Ferreira, Mario L. Chizzotti, Germán D. R. Zamudio, Mauricio M. Estrada, Marcos V. C. Pacheco, Breno C. Silva, Sebastião C. Valadares-Filho, Rafael T. S. Rodrigues
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2019
Materias:	beef bovine cattle corn ensiled grain grain maize marbling meat color meat quality nellore sarcomere silage sorghum subcutaneous fat zebu Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/9c02c79514cb4b97ac533689ec51ef15
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spelling	oai:doaj.org-article:9c02c79514cb4b97ac533689ec51ef152021-12-01T15:32:25ZBeef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains2256-295810.17533/udea.rccp.v33n2a04https://doaj.org/article/9c02c79514cb4b97ac533689ec51ef152019-10-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/340013https://doaj.org/toc/2256-2958Background: Rehydration of grains, such as corn and sorghum, is used to increase nutrient absorption. However, the effect of this practice on meat quality is poorly understood. Objective: To evaluate the effects of type of grain and processing on the meat quality of Nellore steers in a feedlot. Methods: Twenty-four non-castrated Nellore steers (270 ± 53 kg initial body weight) were distributed in a completely randomized 2×2 factorial design, with six replicates. The first factor was cereal type (corn or sorghum), and the second was the grain processing (dry or rehydrated and ensiled). The diets were composed of 28.44% corn silage and 71.56% concentrate. Sixty days before the beginning of the experiment, corn and sorghum grains were rehydrated and ensiled. The animals were slaughtered after 140 days of confinement. Meat quality analyses were determined in samples of fresh and aged meat (7 days) from the Longissimus lumborum muscle. Results: no difference between treatments was observed for carcass pH and L* (lightness), a* (redness), and b* (yellowness) values, shear force, thawing and cooking losses, and chemical composition of meat (p>0.05). The b* (yellowness) value of subcutaneous fat was higher in steers fed corn, regardless of grain processing (p=0.03). Sarcomere length was higher in aged meat of steers fed sorghum, regardless of processing method (p=0.01). Conclusions: the grain processing method does not affect beef quality; however, grain type can affect subcutaneous fat color and sarcomere length of aged beef.Fabiano A. FerreiraMario L. ChizzottiGermán D. R. ZamudioMauricio M. EstradaMarcos V. C. PachecoBreno C. SilvaSebastião C. Valadares-FilhoRafael T. S. RodriguesUniversidad de Antioquiaarticlebeefbovinecattlecornensiled graingrainmaizemarblingmeat colormeat qualitynelloresarcomeresilagesorghumsubcutaneous fatzebuAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 33, Iss 2, Pp 121-133 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	beef bovine cattle corn ensiled grain grain maize marbling meat color meat quality nellore sarcomere silage sorghum subcutaneous fat zebu Animal culture SF1-1100
spellingShingle	beef bovine cattle corn ensiled grain grain maize marbling meat color meat quality nellore sarcomere silage sorghum subcutaneous fat zebu Animal culture SF1-1100 Fabiano A. Ferreira Mario L. Chizzotti Germán D. R. Zamudio Mauricio M. Estrada Marcos V. C. Pacheco Breno C. Silva Sebastião C. Valadares-Filho Rafael T. S. Rodrigues Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
description	Background: Rehydration of grains, such as corn and sorghum, is used to increase nutrient absorption. However, the effect of this practice on meat quality is poorly understood. Objective: To evaluate the effects of type of grain and processing on the meat quality of Nellore steers in a feedlot. Methods: Twenty-four non-castrated Nellore steers (270 ± 53 kg initial body weight) were distributed in a completely randomized 2×2 factorial design, with six replicates. The first factor was cereal type (corn or sorghum), and the second was the grain processing (dry or rehydrated and ensiled). The diets were composed of 28.44% corn silage and 71.56% concentrate. Sixty days before the beginning of the experiment, corn and sorghum grains were rehydrated and ensiled. The animals were slaughtered after 140 days of confinement. Meat quality analyses were determined in samples of fresh and aged meat (7 days) from the Longissimus lumborum muscle. Results: no difference between treatments was observed for carcass pH and L* (lightness), a* (redness), and b* (yellowness) values, shear force, thawing and cooking losses, and chemical composition of meat (p>0.05). The b* (yellowness) value of subcutaneous fat was higher in steers fed corn, regardless of grain processing (p=0.03). Sarcomere length was higher in aged meat of steers fed sorghum, regardless of processing method (p=0.01). Conclusions: the grain processing method does not affect beef quality; however, grain type can affect subcutaneous fat color and sarcomere length of aged beef.
format	article
author	Fabiano A. Ferreira Mario L. Chizzotti Germán D. R. Zamudio Mauricio M. Estrada Marcos V. C. Pacheco Breno C. Silva Sebastião C. Valadares-Filho Rafael T. S. Rodrigues
author_facet	Fabiano A. Ferreira Mario L. Chizzotti Germán D. R. Zamudio Mauricio M. Estrada Marcos V. C. Pacheco Breno C. Silva Sebastião C. Valadares-Filho Rafael T. S. Rodrigues
author_sort	Fabiano A. Ferreira
title	Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
title_short	Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
title_full	Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
title_fullStr	Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
title_full_unstemmed	Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
title_sort	beef quality of nellore steers fed dried or rehydrated and ensiled corn or sorghum grains
publisher	Universidad de Antioquia
publishDate	2019
url	https://doaj.org/article/9c02c79514cb4b97ac533689ec51ef15
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Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains

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