Fatty acid composition of muscle and adipose tissues of organic and conventional Blanca Andaluza suckling kids

  • F. De la Vega Dept. Ciencias Agroforestales, ETSIA. Universidad de Sevilla. Ctra. Utrera km 1. 41013 Sevilla
  • J. L. Guzmán Dept. Ciencias Agroforestales, ETSI. Universidad de Huelva, “Campus de Excelencia Internacional Agroalimentario, ceiA3”, Campus de la Rábida. 21819 Palos de la Frontera. Huelva.
  • M. Delgado-Pertíñez Dept. Ciencias Agroforestales, ETSIA. Universidad de Sevilla. Ctra. Utrera km 1. 41013 Sevilla
  • L. A. Zarazaga Dept. Ciencias Agroforestales, ETSI. Universidad de Huelva, “Campus de Excelencia Internacional Agroalimentario, ceiA3”, Campus de la Rábida. 21819 Palos de la Frontera. Huelva.
  • A. Argüello Animal Science Dept. Universidad de Las Palmas de Gran Canaria. Transmontaña s/n. 35413 Arucas
Keywords: CLA, grazing, n-3 fatty acids, meat

Abstract

Interest in the preservation of autochthonous breeds such as the Blanca Andaluza goat (meat breed), raised under grazing-based management, has recently increased among Spanish farmers. A study of the possibilities of transformation to organic production needs to analyze the quality of their products. The aim of this study was to evaluate the fatty acid (FA) composition of muscle and adipose tissues of Blanca Andaluza goat kids under organic and conventional grazing–based management system. Twenty-four twin kids (12 males, 12 females) were selected from each system. The FA profile was determined in the longissimus thoracis muscle, kidney and pelvic fat. The percentages of C17:0, C17:1, C20:1, C20:4 n-6, C22:2 and several n-3 FAs were higher in organic meat; C12:0, C18:1 trans-11, CLA and C20:5 n-3 were lower in organic meat. The fat depots from the conventional kids showed lower percentages of C12:0, C14:0, C15:0, C17:0, C17:1, C18:3 n-3 and atherogenicity index, and higher percentage of C18:0. In the pelvic fat, the conventional kids displayed lower percentages of C16:0, C18:2 n-6 cis, PUFA, n-3 and n-6 FAs, and greater percentages of C18:1 n-9 cis and MUFA. The conventional kids displayed a major n6:n3 ratio in the kidney fat. No gender differences were observed. Significant differences were found only in some FA percentages of muscle and adipose tissues of suckling kids raised in organic and conventional livestock production systems, and due to this reason conventional grazing–based management farms could easily be transformed into organic production.

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Published
2013-01-28
How to Cite
De la Vega, F., Guzmán, J. L., Delgado-Pertíñez, M., Zarazaga, L. A., & Argüello, A. (2013). Fatty acid composition of muscle and adipose tissues of organic and conventional Blanca Andaluza suckling kids. Spanish Journal of Agricultural Research, 11(3), 770-779. https://doi.org/10.5424/sjar/2013113-3809
Section
Animal production