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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/4611
Title: 
Qualitative characteristics of meat from confined crossbred heifers fed with lipid sources
Author(s): 
Institution: 
  • Universidade Estadual Paulista (UNESP)
  • Universidade de São Paulo (USP)
  • INCT CA
ISSN: 
0103-9016
Sponsorship: 
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Abstract: 
Lipids have been used in ruminant feed to replace high amounts of grain for increasing the diet energy density, performance and meat quality. This study evaluated the qualitative characteristics of meat from feedlot heifers fed with sources of lipid supplements. Twenty-one crossbred heifers (1/4Nelore x 1/4Santa Gertrudis x 1/2Braunvieh) were used. Each heifer received 60 % forage with a base of corn silage and 40 % concentrate, resulting in 5.8 % lipid content in the total diet. The following sources of lipids were used: soybeans, protected fat and soybean oil. There were no differences on physical characteristics of meat samples from heifers fed with the lipid sources. Soybeans increased the concentration of linoleic acid, content of polyunsaturated fatty acid and activity of the Delta(9)-desaturase C16 enzyme in the Longissimus muscle. The use of soybean oil in the diet increased the oleic acid, monounsaturated fatty acid, total cis- and trans-fatty acids (C18:0) and the activity of the Delta(9)-desaturase C16 enzyme in the subcutaneous fat. Diets with soybean grain had greater deposition of linoleic and linolenic acids than diets with fat protected and greater presence of these essential fatty acids are associated to a better composition and meat quality.
Issue Date: 
1-Jan-2012
Citation: 
Scientia Agricola. Cerquera Cesar: Univ Sao Paolo, v. 69, n. 5, p. 336-344, 2012.
Time Duration: 
336-344
Publisher: 
Universidade de São Paulo (USP)
Keywords: 
  • Meat quality
  • protected fats
  • Soybean
  • soybean oil
Source: 
http://dx.doi.org/10.1590/S0103-90162012000500008
URI: 
http://hdl.handle.net/11449/4611
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/4611
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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