Discriminant analysis using fatty acids profile, stable carbon isotopes and tocopherols content as tool for feeding system prediction in Iberian pigs

  1. García-Casco, Juan M. 1
  2. Delgado-Chavero, Carmen L. 2
  3. Zapata, Elena 2
  4. Paredes, Andrés 2
  5. Muñoz, María 1
  6. Rey, Ana I. 3
  1. 1 Centro de I+D en Cerdo Ibérico, INIA. Ctra. EX 101, km 4,7. 06300 Zafra
  2. 2 Asociación Interprofesional del Cerdo Ibérico (ASICI), Ctra. EX 101, km 4,7. 06300 Zafra
  3. 3 Universidad Complutense de Madrid, Facultad Veterinaria, Dpto. de Producción Animal. 28040 Madrid
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Revista:
Spanish journal of agricultural research

ISSN: 1695-971X,  2171-9292

Año de publicación: 2020

Volumen: 18

Número: 4

Tipo: Artículo

DOI: 10.5424/SJAR/2020184-16713 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

Otras publicaciones en: Spanish journal of agricultural research

Resumen

Aim of study: The application of three analytical methods (fatty acids: FA, tocopherols: TOC, and isotope ratio: ISO) to distinguish the feeding type received by Iberian pigs during the fattening stage.Area of study: This distinction is very important for the labelling of Iberian high-quality products in the Quercus forest located on the southwest of Iberian Peninsula, where several production systems coexist.Material and methods: Discriminant analysis on fat samples with unknown background obtained from commercial pigs was applied. The feasibility of the combination method to determine the authentication of feeding background was studied on samples from different fattening system: free-range feeding with acorn and pastures (BE); free-range feeding acorn and pastures plus commercial feeds (RE); open-air feeding with commercial feeds (CA); standard feeding with commercial feeds (CE).Main results: In a first application of the methods, the overall success rate was 60.1% for FA, 49.7% for ISO and 49.3% for TOC. When some of the batches were reclassified attending to those previous results and additional information available about farm characteristics, ISO and TOC analyses had a 70% of success rate in the four categories, whereas FA showed 40.5%, attributable to the use of high-oleic commercial diets. The predictions improved with the method combination. The ISO+TOC combination achieved a 84.1% of success in prediction. When it was reduced to just two categories (acorn vs non-acorn), the success reached a 95% for FA+TOC and ISO+TOC.Research highlights: The use of these methods as a complementary tool for quality controls is highly recommended to avoid undesirable misclassifications.

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Información de financiación

INIA, Spain INIA-RTA2008-00026 Agreement INIA-Ministerio de Medio Ambiente, Medio Rural y Marino CC08-0031.

Financiadores

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Fuente de los datos: Dialnet