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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.19.0133    [Accepted] Published online August 3, 2019.
Effects of dietary lycopene on the protection against oxidation of muscle and hepatic tissue in finishing pigs
Marcelise Regina Fachinello1,*  , Eliane Gasparino1  , Alessandra Nardina Triccia Rigo Monteiro2  , Cleiton Pagliari Sangali3  , André Vinicius Sturzenegger Partyka1  , Paulo Cesar Pozza1 
1Universidade Estadual de Maringá - UEM, Maringá, Paraná, 87020-900, Brazil
2Universidade Estadual de Maringá - UEM, Maringá, Paraná, 87020-900, Brazil
3INRA Agrocampus Ouest, Saint-Gilles, 35590, France
4Centro Universitário Integrado - Campo Mourão, Paraná, 87300-970, Brazil
Correspondence:  Marcelise Regina Fachinello, Tel: 4498892017, Fax: 44998892017, Email: lise_faqui@hotmail.com
Received: 16 February 2019   • Revised: 28 April 2019   • Accepted: 31 July 2019
The objective of this study was to evaluate the effect of different levels of lycopene supplementation on the carcass traits, meat quality, concentration of lipid oxidation products and antioxidant potential in the meat and liver of finishing barrows and gilts. Methods: A total of 40 barrows and 40 gilts were allotted in a completely randomized block design, arranged in a 2 × 5 factorial scheme, consisting of two sexes (barrows and gilts) and five dietary levels of lycopene (0, 12.5, 25.0, 37.5 and 50.0 mg kg-1). In addition, four storage times (0, 24, 48 and 72 h), at 4ºC, were added to the model to evaluate the longissimus lumborum muscle.
An interaction (p=0.010) was observed between storage periods and dietary lycopene levels. The unfolding of the interaction (lycopene x period) showed a decreasing concentration of malondialdehyde concentration as the dietary lycopene increased, at all storage periods. No interactions (p>0.050) were observed for the 2,2 diphenyl 1 picrylhydrazyl (DPPH) in the pork. However, the percentage of DPPH radical inhibition reduced (p=0.001) up to 72 h. Additionally, there was a linear increase (p=0.001) in the capture of DPPH radicals by antioxidants, as the dietary lycopene increased. No interactions were observed (P>0.05) between the evaluated factors in liver. However, Lipid oxidation was reduced by supplementing lycopene in pig diets. The capture of the DPPH radical, resulted increase in the antioxidant power exerted by lycopene in the liver (p=0.001). The concentrations of TBARS and DPPH in the liver were affected by sex (p=0.001).
Dietary supplementation of lycopene reduced the water loss during thawing and was effective in protecting against oxidation of the longissimus lumborum muscle and liver until 72 hours of storage, and the best results were obtained by supplementing with 50.0 mg of lycopene kg-1 of diet.
Keywords: DPPH; Liver; Meat; Oxidation; Pig; TBARS

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