Influence of feeding thermally peroxidized soybean oil on growth performance, digestibility, and gut integrity in finishing pigs

Journal of Animal Science
Martin F OverholtBrian Jay Kerr

Abstract

Consumption of peroxidized lipids has been shown to reduce pig performance and energy and lipid digestibility. Objectives of the current study were to evaluate the effect of feeding soybean oil (SO) with different levels of peroxidation on growth performance, lipid, N, and GE digestibility, plasma Trp, and gut integrity in finishing pigs. Fifty-six barrows (46.7 ± 5.1 kg initial BW) were randomly assigned to one of four diets in each of two dietary phases, containing either 10% fresh SO (22.5 °C) or thermally processed SO (45 °C for 288 h, 90 °C for 72 h, or 180 °C for 6 h), each infused with of 15 L/min of air. Peroxide values were 2.0, 17.4, 123.6, and 19.4 mEq/kg; 2,4-decadienal values were 2.07, 1.90, 912.15, and 915.49 mg/kg; and 4-hydroxynonenal concentrations were 0.66, 1.49, 170.48, and 82.80 mg/kg, for the 22.5, 45, 90, and 180 °C processed SO, respectively. Pigs were individually housed and fed ad libitum for 81 d to measure growth performance, including a metabolism period to collect urine and feces for determination of GE, lipid, N digestibility, and N retention. Following the last day of fecal and urine collection when pigs were in the metabolism crates, lactulose and mannitol were fed and subsequently measured in ...Continue Reading

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Citations

May 29, 2019·Journal of Animal Science·Petra L ChangEric van Heugten
Mar 28, 2020·Journal of Animal Science·Charlotte Lauridsen
Mar 1, 2020·Journal of the Science of Food and Agriculture·Jill K Winkler-MoserBrian J Kerr
Aug 21, 2019·Animal : an International Journal of Animal Bioscience·R D BoydJ F Patience
Dec 10, 2020·The Journal of Nutrition·Krysten A Fries-CraftElizabeth A Bobeck

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