Short-term variations of c18:1 trans fatty acids in plasma lipoproteins and ruminal fermentation parameters of non-lactating cows subjected to ruminal pulses of oils

Vargas-Bello-P�rez, Einar; Loor, Juan J.; Garnsworthy, Philip C.

Abstract

© 2021 by the authors. Licensee MDPI, Basel, Switzerland. The objective of this study was to evaluate short-term variations of trans fatty acids (TFA) in plasma lipoproteins and ruminal fermentation parameters of non-lactating cows subjected to ruminal pulses of vegetable oils. Three non-lactating, non-pregnant Holstein cows, each with a ruminal cannula, were arranged in a 3 × 3 Latin square design with three-day pulsing periods and four-day washout intervals between treatments. Cows were treated with single ruminal pulses of: (1) control (skimmed milk (SM); 500 mL); (2) soybean oil (SO; 250 g/d in 500 mL of SM) and (3) partially-hydrogenated vegetable oil (PHVO; 250 g/d in 500 mL of SM). Time changes after infusion in TFA contents were only observed for plasma C18:1 trans-4, trans-5 and trans-12, and high-density lipoprotein fraction C18:1 trans-9. After ruminal pulses, concentration of acetate decreased linearly; molar concentrations of propionate and valerate increased linearly; molar concentrations of butyrate and isovalerate changed quadratically and were greater at 1 h than at other times. There was an accumulation of several C18:1 TFA in plasma and lipoproteins, especially on the third day of pulsing. Overall, naturally occurring C18:1 TFA isomers (produced during ruminal biohydrogenation of SO) and preformed TFA (supplied by PHVO) elicited differential TFA partitioning and transport in plasma and lipoproteins.

Citation

Vargas-Bello-Pérez, E., Loor, J. J., & Garnsworthy, P. C. (2021). Short-term variations of c18:1 trans fatty acids in plasma lipoproteins and ruminal fermentation parameters of non-lactating cows subjected to ruminal pulses of oils. Animals, 11(3), Article 788. https://doi.org/10.3390/ani11030788

• Journal Article Type: Article
• Acceptance Date: Mar 10, 2021
• Online Publication Date: Mar 12, 2021
• Publication Date: Mar 1, 2021
• Deposit Date: Mar 12, 2021
• Publicly Available Date: Mar 22, 2021
• Journal: Animals
• Electronic ISSN: 2076-2615
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: 3
• Article Number: 788
• DOI: https://doi.org/10.3390/ani11030788
• Keywords: biohydrogenation; cows; lipoproteins; ruminal fluid; trans fatty acids; vaccenic acid
• Public URL: https://nottingham-repository.worktribe.com/output/5389017
• Publisher URL: https://www.mdpi.com/2076-2615/11/3/788