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Effect of a dietary supplementation with linseed oil and selenium to growing rabbits on their productive performances, carcass traits and fresh and cooked meat quality.

Authors
  • Matics, Zs1
  • Cullere, M2
  • Szín, M3
  • Gerencsér, Zs1
  • Szabó, A1
  • Fébel, H4
  • Odermatt, M3
  • Radnai, I1
  • Dalle Zotte, A2
  • Szendrő, Zs1
  • 1 Faculty of Agricultural and Environmental Sciences, Kaposvár University, Kaposvár, Hungary. , (Hungary)
  • 2 Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Padova, Italy. , (Italy)
  • 3 Olivia Ltd, Lajosmizse, Hungary. , (Hungary)
  • 4 Research Institute for Animal Breeding and Nutrition, Herceghalom, Hungary. , (Hungary)
Type
Published Article
Journal
Journal of animal physiology and animal nutrition
Publication Date
Aug 01, 2017
Volume
101
Issue
4
Pages
685–693
Identifiers
DOI: 10.1111/jpn.12589
PMID: 27550717
Source
Medline
Keywords
License
Unknown

Abstract

The present experiment tested a dietary supplementation with linseed oil and selenium to growing rabbits. The basal diet (B) contained 3% sunflower oil, while it was substituted with 3% linseed oil in the experimental feed (S). The selenium (Se) content of the two diets was 0.10 vs. 0.46 mg/kg. Rabbits were fed with B diet from the age of 18 days. One group was fed with the B diet until 11 weeks of age (group B), whereas the experimental groups were fed with S diet for 1, 2, 3 or 4 weeks (groups S1, S2, S3 and S4, respectively), before slaughtering (11 weeks of age). Live performance and carcass traits of rabbits, fatty acid (FA) profile and selenium content of their hind leg (HL) and Longissimus thoracis et lumborum (LTL) meat were considered in this study. In addition, the effect of two different cooking methods on the nutritional value of the enriched HL meat was also assessed. The tested dietary supplementation only minimally affected the live performance and carcass traits of rabbits. The S supplementation significantly reduced the Σ n-6 FA and increased the Σ n-3 FA of the HL meat and LTL meat, compared to the B diet (p < 0.001); thus, n-6/n-3 ratio was improved (p < 0.001). In addition, HL meat and LTL meat of S fed rabbits were significantly enriched in Se reaching a twofold increase in both meat cuts (p < 0.01). Therefore, the S supplementation improved the functional value of the rabbit meat. The heat treatment affected cooking loss, Se and vitamin E contents as well as the oxidative status of the HL meat (p < 0.001), with the different cooking methods providing different results. In addition, even if the beneficial C20:5 n-3 and C22:6 n-3 decreased with cooking, the n-6/n-3 ratio remained unaffected.

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