Effects of dietary flaxseed oil with or without products with antioxidant properties on pig performance, carcass characteristics, meat quality and oxidative stability
Daniela Miotto Bernardi
A C * , Teresinha Marisa Bertol B , Arlei Coldebella B , Anildo Cunha Junior B , Bárbara Cristina Silveira-Almeida D , Juliana Bürger Rodrigues C , Daniel Barrera-Arellano E , Helena Teixeira Godoy F , Adriana Dillenburg Meinhart F , Leandro Daniel de Paris G and Valdemiro Carlos Sgarbieri C
+ Author Affiliations
- Author Affiliations
A Departamento de Nutrição, Universidade Estadual do Oeste do Paraná, Rua Maringá 1200, Vila Nova, Francisco Beltrão, Paraná, Brazil, CEP: 85605-010.
B Embrapa Suínos e Aves, Rodovia BR 153, KM 110, Vila Tamanduá, Caixa Postal: 21, Concórdia, Santa Catarina, Brazil, CEP: 89715-899.
C Departamento de Alimentos e Nutrição, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas – UNICAMP, Cidade Universitária Zeferino Vaz Rua Monteiro Lobato 80, Caixa Postal: 6121, Campinas, São Paulo, Brazil, CEP: 13083-862.
D Departamento de Zootecnia, Universidade Federal Rural de Pernambuco, Rua Dom Manuel de Medeiros s/n, Dois Irmãos, Recife, Pernambuco, Brazil, CEP: 52171-900.
E Departamento de Tecnologia de Alimentos, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas – UNICAMP, Cidade Universitária Zeferino Vaz s/n, Caixa Postal: 6121, Campinas, São Paulo, Brazil, CEP: 13083-862.
F Departamento de Ciências de Alimentos, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas – UNICAMP, Cidade Universitária Zeferino Vaz s/n, Caixa Postal: 6121, Campinas, São Paulo, Brazil, CEP: 13083-862.
G Falbom Agroindustrial Ltda, Rodovia PR-317, Km 366, Linha São Francisco, Toledo, Paraná, Brazil, CEP: 85902-600.
Animal Production Science 62(18) 1789-1804 https://doi.org/10.1071/AN21458
Submitted: 14 May 2021 Accepted: 8 July 2022 Published: 12 August 2022
© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing
Abstract
Context: The inclusion of natural products with antioxidant properties in animal diets as well as the use of different lipid sources has been tested to improve the nutritional quality of meat.
Aim: The aim of this work was to compare natural products with antioxidant properties and vitamin E in swine diets containing flaxseed oil.
Methods: Ninety-six animals were allocated to six treatments: control diet (C), diet with 3% flaxseed oil (F), diet with 3% flaxseed oil + 10% grape pomace (FGP), diet with 3% flaxseed oil + 0.0022% grape seed extract (FGE), diet with 3% flaxseed oil + 5% Nile tilapia carcass hydrolysate (FH), and diet with 3% flaxseed oil + 200 ppm vitamin E supplement (FVitE).
Key results: The treatments had no effect on growth performance or serum total antioxidant status, while low-magnitude effects on carcass traits were observed. The addition of flaxseed oil to the diet increased the omega-3 and total polyunsaturated fatty acid concentrations and decreased saturated fatty acid and monounsaturated fatty acid concentrations in meat; high concentrations of total tocopherol were observed in the treatments FVitE, FGE, and FH, while a higher oxidative stability (Rancimat®) of backfat was observed for the treatment FVitE. The thiobarbituric acid-reactive substances assay and the sensory evaluation of mini-burgers revealed that vitamin E was the most efficient antioxidant throughout the storage, although the treatments FH and FGE have presented a mild effect.
Conclusions: Problems of oxidative stability of pork resulting from including flaxseed oil in the diet of pigs due to increases in omega-3 fatty acids were better overcome by dietary vitamin E than by the use of the other natural antioxidants assessed here. However, this study also demonstrated that both the tilapia hydrolysate and grape seed extract have potential to be used as natural antioxidants, although further studies are required.
Implications: The results impact the meat industry in regard to the nutritional quality and oxidative stability of meat. Pork with higher omega-3 content and natural antioxidants can meet consumer demand for a healthier diet, besides providing higher stability throughout storage, providing an additional market niche for the pork industry.
Keywords: grape pomace, grape seed extract, linseed, meat vitamin E, mini-burgers, Nile tilapia carcass hydrolysate, omega-3, swine carcass.
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