Effect of feeding fermentable fibre-rich feedstuffs on meat quality with emphasis on chemical and sensory boar taint in entire male and female pigs |
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| Affiliation: | 1. IRTA-Monells, Product Quality Program, Finca Camps i Armet, E-17121 Monells, Girona, Spain;2. Universidad Complutense de Madrid, Facultad de Veterinaria, Avda. Puerta de Hierro, 28040 Madrid, Spain;3. Universidad de Murcia, Facultad de Veterinaria, Campus de Espinardo, 30100 Murcia, Spain;4. Estación Tecnológica de la Carne, Instituto Tecnológico Agrario, Consejería de Agricultura y Ganadería, Junta de Castilla y León, 37770 Guijuelo, Salamanca, Spain;1. University of Bonn, Department of Nutrition and Food Sciences, Bioanalytics, Endenicher Allee 11-13, D-53115 Bonn, Germany;2. ELFI Analytik GbR, Massenhausener Straße 18a, D-85375 Neufahrn, Germany;3. University of Göttingen, Department of Animal Sciences, Albrecht-Thaer-Weg 3, D-37075 Göttingen, Germany;4. University of Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, An der Immenburg 4, D-53121 Bonn, Germany;5. University of Bonn, Institute for Agricultural Engineering, Work Group on Trace Gas and Odor Measurement, Nussallee 5, D-53115 Bonn, Germany;6. Dienstleistungszentrum Ländlicher Raum Rheinpfalz, Breitenweg 71, D-67435 Neustadt an der Weinstraße, Germany |
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| Abstract: | Skatole, androstenone and other compounds such as indole cause boar taint in entire male pork. However, female pigs also produce skatole and indole. The purpose of this experiment was to minimise boar taint and increase overall impression of sensory quality by feeding entire male and female pigs with fibre-rich feedstuffs. The pigs have been fed three organic diets for either 1 or 2 weeks prior to slaughter of which two diets contained different fermentable fibre-rich feedstuffs – 10–13.3% dried chicory roots or 25% blue lupines. These two treatments were compared with pigs fed with an organic control diet for either 1 or 2 weeks prior to slaughter. Lupines significantly reduced skatole in blood and backfat for both genders after 1 week. Moreover, lupines showed negative impact on growth rate and feed conversion whilst chicory showed no significant differences in this respect. However, the indole concentration was significantly lower in chicory than lupine fed pigs. From a sensory perspective, chicory and lupine feeding reduced boar taint since odour and flavour of manure related to skatole and urine associated to androstenone were minimised. The level of boar taint in the entire male pigs was most effectively reduced after 14 days by both fibre-rich feeds while lupine had the largest influence on “boar” taint reduction in female pigs. |
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