Qualitative-feed-restricted heavy swine: meat quality and morpho-histochemical characteristics of muscle fibers

Brazilian Archives of Biology and Technology

Alessandro Luís Fraga¹  Maria Cristina Thomaz¹  Rodolfo Nascimento Kronka¹  Fábio Enrique Lemos Budiño¹  Rizal Alcides Robles Huaynate¹  Antônio João Scandolera¹  Urbano Dos Santos Ruiz¹  Flora Helena De Freitas D'angelis¹ 

[1] ,Universidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Jaboticabal SP ,Brasil

关键词: Color;    fatty acid profile;    muscle fiber;    nutritional value;    tenderness;   

DOI  :  10.1590/S1516-89132009000500012

来源: SciELO

【 摘 要 】

To evaluate the effect of different levels of qualitative feed restriction (0, 5, 10, 15 and 20%) on pork quality and muscle morpho-histochemical characteristics, 60 castrated male swines were used. Ten animals were slaughtered at 89 kg BW. Other 50 pigs were fed experimental diets and slaughtered at 128 kg BW. Qualitative restriction increased pH45, and water holding capacity, and reduced the redness, yellowness and cholesterol concentrations of Longissimus lumborum. Quadratic tendency for oleic acid contents of loin and fiber cross-section area of Multifidus dorsi (P=0.08) were observed, with maximum point at 11-12% of restriction. No effect (P>0.1) on percentage of M. dorsi fibers SO, FG and FOG was found. The meat from 128-kg-BW pig showed numerically higher values for colorness, water losses, and lipid content and lower shear force than 89-kg-BW pigs. Qualitative feed restriction for finishing swines neither affected negatively pork quality nor modified the muscle fiber profile.

【 授权许可】

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