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Dietary soybean oil modulates fatty acid composition of pork

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Abstract

This study was conducted to evaluate the impact of soybean oil level on performance and fatty acid profile of backfat and longissimus lumborum muscle of gilts. Forty-eight gilts with an initial weight of 21.75 ± 0.138 kg and final weight of 98.65 ± 2.106 kg were subjected to one of the following six dietary soybean oil inclusions (0.00, 1.086, 2.173, 3.259, 4.345, and 5.432%). Experimental design was completely randomized block with six treatments and four replicates of two animals each. Lipid profile of backfat and longissimus lumborum muscle was analyzed by gas chromatography. Increasing dietary soybean oil levels did not influence final weight, daily weight gain, and feed intake (P > 0.05) but improved feed to gain ratio (P < 0.05). The inclusion of soybean oil modified the lipid profile of backfat and muscle, reduced saturated and monounsaturated fatty acids, and increased polyunsaturated fatty acids concentration, mainly linoleic and α-linolenic acids (P < 0.05). Increasing dietary soybean oil inclusion decreased atherogenic and thrombogenic indexes, and the omega-6:omega-3 ratio of the backfat and longissimus lumborum muscle (P < 0.05). The level of soybean oil in swine diets influenced backfat and longissimus lumborum lipid profile.

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Acknowledgements

The authors thank the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), for the doctoral and “sandwich” doctoral scholarship (Finance code 001) granted to the first author.

Funding

This work was supported by the UFMS and CAPES.

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Authors

Contributions

SASA, CK, and KMRS conceived and designed research. SASA, DAM, and TVAF conducted experiments. LHV and MNBG contributed new reagents or analytical tools. CK and AC analyzed data. SASA wrote the first version of the manuscript. LHV, MNBG and KMRS revised and edited final version of the manuscript. All authors read and approved the manuscript.

Corresponding author

Correspondence to Stephan Alexander da Silva Alencar.

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Ethics approval

The study was approved by the Ethics Committee on Animal Use of the University, under protocol Nº 552/2012.

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The authors no competing interests.

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Alencar, S.A.d., Kiefer, C., Nascimento, K.M.R.d. et al. Dietary soybean oil modulates fatty acid composition of pork. Trop Anim Health Prod 53, 357 (2021). https://doi.org/10.1007/s11250-021-02804-1

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