Impact of rearing systems in the Eastern Amazon on cholesterol, β-carotene and vitamin E homologues in steer.

Autor:	Dos Santos Miranda Lobato A; Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal, Brazil., da Silva JAR; Institute of Animal Health and Production, Federal Rural University of the Amazônia (UFRA), Belem, Brazil., de Carvalho Rodrigues TCG; Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal, Brazil., Silva AGME; Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal, Brazil., da Cruz AV; Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal, Brazil., Ferreira APD; Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal, Brazil., Costa MM; Faculty of Veterinary Medicine, Centre for Interdisciplinary Research in Animal Health (CIISA), University of Lisbon, Lisbon, Portugal.; Laboratório Associado para Ciência Animal e Veterinária (AL4AnimalS), Faculdade de Medicina Veterinária, Universidade de Lisboa, Lisbon, Portugal., Cunha AMQ; Federal University of Pará, Cametá, Pará, Brazil., Lourenço-Costa VV; Institute of Health Sciences, Federal University of Pará, Belém, Brazil., Barbosa AVC; Institute of Animal Health and Production, Federal Rural University of the Amazônia (UFRA), Belem, Brazil., Prates JAM; Faculty of Veterinary Medicine, Centre for Interdisciplinary Research in Animal Health (CIISA), University of Lisbon, Lisbon, Portugal.; Laboratório Associado para Ciência Animal e Veterinária (AL4AnimalS), Faculdade de Medicina Veterinária, Universidade de Lisboa, Lisbon, Portugal., de Brito Lourenço-Júnior J; Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal, Brazil.
Jazyk:	angličtina
Zdroj:	Frontiers in veterinary science [Front Vet Sci] 2024 May 16; Vol. 11, pp. 1331913. Date of Electronic Publication: 2024 May 16 (Print Publication: 2024).
DOI:	10.3389/fvets.2024.1331913
Abstrakt:	Introduction: The quality of meat, with a focus on compounds important for human health, is directly related to the rearing systems in which the animals are produced. The search for a balanced diet, with an emphasis on low cholesterol and adequate levels of vitamins, aligns with society's emphasis on healthy eating, directly correlated with the importance of the offer made by producers for the cattle's diet. Objective and Methodology: The objective was to verify the impact of different rearing systems, in the Eastern Amazon, during the rainy season, on the concentrations of vitamins (A, E) and cholesterol in the muscle ( Longissimus lumborum ) of crossbred Nelore cattle, castrated, aged between 24 and 36 months, and weighing between 410 and 628 kg. Twelve animals, from each of the three pasture rearing systems: native pasture in flooded areas of Monte Alegre; native pasture in a flooded area of Santa Cruz do Arari; and pasture cultivated on dry land in São Miguel do Guamá, all located in Pará, Brazil-were sampled in commercial slaughterhouses. Results: A notable influence was observed in the concentrations of β-carotene ( p  < 0.01), α-Tocopherol ( p  = 0.02), β-Tocopherol ( p  < 0.01) and the combined sum of β-Tocotrienol and γ-Tocopherol ( p  < 0.01), as well as δ-Tocopherol ( p  < 0.01) when contrasting extensive with intensive systems (confinement). However, there was a difference in the content of vitamins and cholesterol between the isolated extensive systems, or between the four rearing systems ( p  > 0.05). Extensive systems, mainly in Monte Alegre, demonstrated greater amounts of α-Tocopherol and δ-Tocopherol. Conclusion: On the other hand, the intensive system exhibited higher levels of other investigated compounds, clarifying the nutritional variations generated by different livestock rearing practices in the region. Therefore, the results obtained are innovative in the Eastern Amazon, Brazil, in addition to inspiring the development of new research to meet other demands in this field, and achieve additional results, such as determining which meat, coming from cattle in production systems in the country, presents the better compositional quality of vitamins and lipids. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2024 dos Santos Miranda Lobato, da Silva, de Carvalho Rodrigues, Silva, da Cruz, Ferreira, Costa, Cunha, Lourenço-Costa, Barbosa, Prates and de Brito Lourenço-Júnior.)
Databáze:	MEDLINE
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