Original scientific paper
https://doi.org/10.5513/JCEA01/23.2.3502
Seasonal changes in diet affect fatty acid composition of Jersey milk in organic production system
Nikolina KELAVA UGARKOVIĆ
; University of Zagreb Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Ivana PETROVIĆ
; Vlaka VI. br. 1, 22303 Oklaj, Croatia
Zvonimir PRPIĆ
orcid.org/0000-0003-0827-4594
; University of Zagreb Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Ivan VNUČEC
orcid.org/0000-0002-5190-3045
; University of Zagreb Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Miljenko KONJAČIĆ
; University of Zagreb Faculty of Agriculture, Department of Animal Science and Technology, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Abstract
The aim of this study was to determine effect of diet-based seasonal changes on fatty acid composition of Jersey milk in mountain region of Croatia. Bulk milk samples (200 mL) were collected during total-mixed ratio (TMR)-based, intermediate and pasture-based diet. Fatty acid composition of milk was determined by gas-chromatography. We found that pasture-based diet has positive effect on fatty acid composition of Jersey milk considering human nutrition. During pasture-based diet, Jersey cows produced milk with lower (P<0.05) saturated fatty acid and higher (P<0.05) polyunsaturated fatty acid content. Namely, regarding individual fatty acids, milk produced during pasture-based diet had lower (P<0.05) C16:0 and higher (P<0.05) C18:2n-6, C18:3n-6 and conjugated linoleic acid (CLA) content than milk produced during TMR and intermediate diet. Milk produced during pasture-based diet can be valuable source of healthbeneficial PUFA in diet.
Keywords
dairy; pasture-based diet; total-mixed ratio; polyunsaturated fatty acids
Hrčak ID:
279671
URI
Publication date:
27.6.2022.
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