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Retinol and α-tocopherol contents, fat color, and lipid oxidation as traceability tools of the feeding system in suckling payoya kids

Publicado en:Animals. 12 (1): - 2022-01-01 12(1), doi: 10.3390/ani12010104

Panea B;

Afiliaciones

Centro de Investigaci?n y Tecnolog?a Agroalimentaria de Arag?n , Universidad de Zaragoza - Autor o Coautor
Centro de Investigación y Tecnología Agroalimentaria de Aragón - Entidad de origen
Ctr Invest & Tecnol Agroalimentaria Aragon CITA, Unidad Prod & Sanidad Anim, Avda Montanana 930, Zaragoza 50059, Spain - Autor o Coautor
Ministerio de Economía y Competitividad - Financiador
Univ Extremadura, Dept Anim Prod & Food Sci, Ave Adolfo Suarez S-N, Badajoz 06007, Spain - Autor o Coautor
Univ Las Palmas Gran Canaria, Inst Anim Hlth & Food Safety, Anim Prod & Biotechnol Grp, Arucas 35413, Spain - Autor o Coautor
Univ Seville, Dept Agron, Ctra Utrera Km 1, Seville 41013, Spain - Autor o Coautor
Univ Zaragoza, CITA, Inst Agroalimentario Aragon IA2, C Miguel Servet, Zaragoza 50059, Spain - Autor o Coautor
Universidad de Extremadura - Autor o Coautor
Universidad de Las Palmas de Gran Canaria - Autor o Coautor
Universidad de Sevilla - Autor o Coautor
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Resúmen

Resúmen: The effects of Payoya kid feeding systems on the fat-soluble vitamin (retinol/α-tocopherol) contents, fat content, fat color, and the oxidation index were evaluated to determine their potential for use as feeding system traceability tools. Four groups of Payoya kids (55 animals in total) fed milk exclusively were studied: a group fed a milk replacer (MR) and three groups fed natural milk from dams reared with different management systems (mountain grazing (MG), cultivated meadow (CM) and total mixed ration (TMR)). Kids were slaughtered around one month of age and 8 kg of live weight. Kids from the MG and CM groups presented lower retinol (5.56 and 3.72 µg/mL) and higher α-tocopherol plasma (11.43 and 8.85 µg/mL) concentrations than those from the TMR and MR groups (14.98 and 22.47 µg/mL of retinol; 2.49 and 0.52 µg/mL of α-tocopherol, respectively) (p < 0.001). With respect to fat, kids with a higher intramuscular fat percentage (CM and TMR groups) had lower retinol contents (16.52 and 15.99 µg/mL, respectively) than kids from the MG and MR groups (26.81 and 22.63 µg/mL, respectively) (p < 0.001). A dilution effect of vitamins on fat was shown: the higher the amount of fat, the lower the vitamin concentrations, the higher the lipid oxidation index (MDA), and the lower the SUM (absolute value of the integral of the translated spectra between 450 and 510 nm). A discriminant analysis that included all studied variables showed that 94.4% of the kids were classified correctly according to their feeding system and could allow traceability to the consumer.

Palabras clave: adipose-tissue; beta-carotene; color; diet; fat-soluble vitamins; feeding systems; goat kid; lipid oxidation; meat quality; milk; pasture; performance; plasma; reflectance spectroscopy; traceability; Color; Fat-soluble vitamins; Feeding systems; Goat kid; Lipid oxidation; Traceability; Vitamin-e supplementation

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Best Categ.Agriculture, Dairy & Animal ScienceVeterinary (Miscellaneous)
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IF3.2310.610--0.000
Rank13/6331/207
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DD2D2-
TT1T1
PP80P15
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