Abstract
Aim of study: To evaluate two experimental diets based on olive cake supplied during the growth period as an alternative to the restricted feeding applied in the production of Iberian pigs fattened with acorn (Montanera system).
Area of study: Southwest of Badajoz, Spain
Material and methods: 44 Iberian pigs were divided in three diet groups: 1) control (C) group (n=15), 2) dry olive pulp (DOP) group, fed a compound feed elaborated with olive pulp (n=14), and 3) wet crude olive cake (WCOC) group, fed a compound feed and olive cake silage supplied ad libitum (n=15). Subcutaneous fat biopsies were taken and backfat thickness and longissimus thoracis et lumborum (LTL) area were measured. In addition, quality traits (intramuscular fat percentage, color, pigment content, water holding capacity and shear force) were measured in LTL. Backfat fatty acid profile and intramuscular fat were also analysed.
Main results: Significant differences were observed between groups for most of the fatty acids in backfat at 95 kg but differences were of lower magnitude at 160 kg and affected only to C16:1, C18:0, C18:1, C20:0, C20:1 and ΣSFA. Otherwise, lower values for red color and myoglobin content and higher for thawing water losses were observed for DOP pigs. The WCOC did not affect the analysed quality traits.
Research highlights: Experimental diets did not have an important impact on growth, carcass composition or meat quality. Therefore, WCOC dietary treatment could be an interesting alternative that could reduce the undesirable effects of feed restriction.
Publisher
Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA)
Subject
Agronomy and Crop Science
Reference48 articles.
1. Alburquerque JA, González J, García D, Cegarra J, 2004. Agrochemical characterisation of "alperujo", a solid by-product of the two-phase centrifugation method for olive oil extraction. Bioresour Technol 91: 195-200.
2. Andres AI, Cava R, Mayoral AI, Tejeda JF, Morcuende D, Ruiz J, 2001. Oxidative stability and fatty acid composition of pig muscles as affected by rearing system, crossbreeding and metabolic type of muscle fibre. Meat Sci 59(1): 39-47.
3. AOAC, 2005. Official Methods of Analysis, 18th ed. AOAC International, Maryland, USA.
4. Benito J, Vazquez-Cisneros C, Menaya C, Ferrera JL, Romero A, Garcia-Casco JM, 1998. Utilización del alperujo de aceituna como suplemento de la ración en el cerdo ibérico de primor. Solo Cerdo Ibérico 1: 45-51.
5. Bligh EG, Dyer WJ, 1959. A rapid method of total lipid extraction and purification. Can J Biochem Physiol 37(8): 911-917.
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