Fatty Acid Profile in Liver Tissue From Cattle Raised in Different Systems in the Eastern Amazon, Brazil

Summary

Bovine liver is a food that is known to be nutritious and easily accessible to consumers. The nutritional quality of this food can be influenced by several factors, such as the rearing system. The objective of this study was to characterize the fatty acid profile in the liver tissue of cattle raised in the Brazilian Eastern Amazon, taking into account the effect of the rearing system and seasonality. Liver tissue samples from cattle raised in native pastures, in flooded areas, in cultivated pastures, in highlands and in a confinement, system was evaluated. The liver tissue from the extensive systems showed (p < 0.05) a higher proportion of saturated fatty acids (C16:0 and 17:0) and a higher proportion of monounsaturated fatty acids compared with the confinement liver tissue. The sum of pol

Regional applicability

This study was conducted in Brazil's Eastern Amazon and is directly relevant to tropical/subtropical cattle production systems. Whilst UK cattle are typically raised in temperate grassland or indoor systems, the comparative methodology and fatty acid profile outcomes provide transferable evidence on how farming system type influences nutrient composition of livestock products, applicable to UK dietary quality assessments and production system evaluation.

Key measures

Fatty acid composition (C16:0, C17:0, saturated, monounsaturated, polyunsaturated fatty acids, EPA, DHA, DPA, alpha-linolenic acid) in liver tissue; effect of rearing system and seasonality

Outcomes reported

The study characterized fatty acid profiles in bovine liver tissue across five different rearing systems (native pastures, flooded areas, cultivated pastures, highlands, and confinement) in the Eastern Amazon. It compared saturated, monounsaturated, and polyunsaturated fatty acid proportions between extensive and intensive production systems.

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