Resumos
Objetivou-se com este trabalho avaliar o efeito da suplementação lipídica na terminação de tourinhos Red Norte sobre as características qualitativas da carne. Foram utilizados 27 tourinhos com peso corporal inicial médio de 317 ± 33kg, submetidos as seguintes dietas: sem suplementação lipídica (SSL); suplementados com óleo de soja (SOS) e suplementados com óleo de fritura (SOF). A duração do experimento foi de 112 dias, sendo 28 dias de adaptação e 84 dias experimentais. Os animais receberam dieta "ad libitum", para ganho médio diário de 1,5kg e foram abatidos em frigorífico industrial. A composição centesimal e o colesterol da carne, e da gordura subcutânea não foram influenciadas pelos tratamentos (P>0,05). Houve interação (P<0,01) entre tratamento e dias para força de cisalhamento (FC) enquanto que para as características de capacidade de retenção de água (CRA), perda por cozimento (PPC) e pH houve apenas efeito de tratamento (P<0,01). Para as características de cor, houve interação entre tratamento e dia para a intensidade de amarelo (b*), índice de saturação (c*) e ângulo de tonalidade (h*) (P<0,5), enquanto que para intensidade de vermelho (a*) houve efeito de tratamento (P<0,001) e dias (P<0,001) e para luminosidade (L*) houve efeito apenas de tratamento (P<0,001). A suplementação lipídica não influenciou a composição centesimal da carne e o seu teor de colesterol. O óleo de soja influenciou a cor da carne, sem comprometer sua qualidade. Já o óleo de fritura apresentou uma carne com elevado pH, o que é indesejável para o consumo humano.
bovino; maturação; qualidade de carne; suplementação lipídica
The objective of this study was to evaluate the effect of the lipid supplementation on finishing of Red Norte young bulls in the meat qualitative characteristics. Twenty seven young bulls with at initial average weight of 317± 33kg were used, according with the diets: no lipid supplementation (SSL), supplemented with soybeans oil (SOS) and supplemented with fry oil (SOF). The experiment lasted 112 days, being 28 days was for adaptation to experimental diets. The animals received "ad libitum" diets to average daily gain of 1,5kg and were slaughtered in industrial slaughterhouse. The chemical composition and the cholesterol of the meat and the subcutaneous fat were not influenced by treatments (P>0,05). There was interaction (P<0,01) between treatments and share force (FC) whereas for water holding capacity (CRA), cooking losses (PPC) and pH there was only treatment effect (P<0,01). To characteristics of color, there was interaction between treatment and day to yellow intensity (b*), saturation index (c*) and tone angle (h*) (P>0,05), whereas for red intensity (a*) there was effect of treatment (P<0,001) and days (P<0,001) and to luminosity (L*) there was effect only to treatment (P<0,001). The lipid supplementation was not influenced the chemical composition of the meat and its cholesterol content. The soybeans oil influenced the meat color, without compromising its quality. However, the fry oil showed meat with high pH, which is undesirable for human consumption.
cattle; lipid supplementation; maturation; meat quality
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Datas de Publicação
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Publicação nesta coleção
08 Maio 2014 -
Data do Fascículo
Mar 2014
Histórico
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Aceito
21 Fev 2014 -
Recebido
07 Set 2013
