Leptin receptor and fatty acid desaturase-2 gene variants affect fat, color and production profile of dry-cured hams

Suárez-Mesa, Rafael; Ros Freixedes, Roger; Tor i Naudí, Marc; Reixach, Josep; Pena i Subirà, Ramona Natacha; Estany Illa, Joan

doi:https://doi.org/10.1016/j.meatsci.2020.108399

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Issue date

2020-12-03

Author

Suárez-Mesa, Rafael

Ros Freixedes, Roger

Tor i Naudí, Marc

Reixach, Josep

Pena i Subirà, Ramona Natacha

Estany Illa, Joan

Suggested citation

Suárez-Mesa, Rafael; Ros Freixedes, Roger; Tor i Naudí, Marc; Reixach, Josep; Pena i Subirà, Ramona Natacha; Estany Illa, Joan; . (2020) . Leptin receptor and fatty acid desaturase-2 gene variants affect fat, color and production profile of dry-cured hams. Meat Science, 2021, vol. 173, p. 108399. https://doi.org/10.1016/j.meatsci.2020.108399.

Abstract

The effects of LEPR (rs709596309C>T) and FADS2 (rs321384923A>G) single nucleotide polymorphisms on production and quality attributes in purebred Duroc dry-cured hams were examined. As compared to LEPR-C- hams, the LEPR-TT hams had more intramuscular fat (+2.2% dry matter, P<0.01). As a result, they showed higher saturated (+1.54%, P<0.01) and lower polyunsaturated (-1.05%, P<0.01) fatty acids content and were brighter (L*: +1.07, P<0.05) and yellower (b*: +0.78, P<0.01). The FADS2-A allele enhanced the C20:4n-6 to C18:2n-6 ratio but did not affect either fat content or color coordinates. However, hams carrying the FADS2-A allele reached the target weight loss earlier, thereby spending less time in seasoning (-8.4 d, P<0.01). Thus, production batches could be arranged by genotype, with longer manufacturing times for fatter LEPR-TT and shorter times for FADS2-A− hams. These results confirm that genetic markers validated in raw pork are effective in dry-cured ham, but also stress that product-specific validations are still needed to unravel specific outcomes.

URI

http://hdl.handle.net/10459.1/70092

DOI

https://doi.org/10.1016/j.meatsci.2020.108399

Is part of

Meat Science, 2021, vol. 173, p. 108399

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Articles publicats (Agrotecnio Center) [1018]
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Except where otherwise noted, this item's license is described as cc-by-nc-nd, (c) Elsevier, 2020