Effect of inoculated corn silage enriched with sunflower oil on rumen fermentation and lipid metabolism in an artificial rumen (RUSITEC)

• Published in: Journal of the science of food and agriculture Vol. 90; no. 1; pp. 78 - 84
• Main Authors: JALC, Dušan, VARADYOVA, Zora, LAUKOVA, Andrea
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 15.01.2010; Wiley; John Wiley and Sons, Limited
• Subjects: Animals; Bacteria - metabolism; Biological and medical sciences; Cereal and baking product industries; corn silage; Dietary Fats - metabolism; Dietary Fats - pharmacology; Enterococcus faecium; Enterococcus faecium - metabolism; Fat industries; Fatty acids; Fatty Acids - metabolism; Fatty Acids - pharmacology; Feeds; Fermentation; Food industries; Food science; Fundamental and applied biological sciences. Psychology; Helianthus; Hydrogenation; Immunization; inoculation; Lactobacillus fermentum; Lactobacillus plantarum; Lactobacillus plantarum - metabolism; Lipid Metabolism - drug effects; Medicago sativa; Metabolism; Models, Animal; Oleic Acids - metabolism; Plant Oils - metabolism; Plant Oils - pharmacology; Rumen - metabolism; Rumen - microbiology; ruminal lipid biohydrogenation; RUSITEC; Silage - microbiology; Sunflower Oil; Zea mays - microbiology; corn silage; Digestive system; RUSITEC; Corn; Lipids; Rumen; Vegetable oil; Edible oil; Fermentation; Metabolism; rumen metabolism; Inoculation; Sunflower oil; Silage; Cereal; ruminal lipid biohydrogenation
• ISSN: 0022-5142; 1097-0010
• DOI: 10.1002/jsfa.3783

BACKGROUND: Some rumen isolates are able to produce conjugated linoleic acid (CLA) from linoleic acid (LA) in vitro. Effects of providing diets containing corn silage (CS) and lucerne hay to an artificial rumen (RUSITEC) in which the corn was not inoculated (CS), or inoculated with Lactobacillus plantarum CCM 4000 (CS + LP), Lactobacillus fermentum LF2 (CS + LF) or Enterococcus faecium CCM 4231 (CS + EF) and supplied with sunflower oil (SO; 30 g kg−1; w/w) on rumen metabolism were examined. RESULTS: The SO affected the outputs of all fatty acids. TVA output of uninoculated CS with SO was lower as compared to inoculated CS. The interaction of the CS × SO in the daily output of TVA was detected (P < 0.001). The biohydrogenation of oleic, linoleic, α‐linolenic and total fatty acids was influenced by SO (P < 0.05 and P < 0.001). CONCLUSION: Inoculated silage induces changes in the rumen metabolism which might be related to differences observed in the extent of rumen BH of PUFA in RUSITEC. SO supplementation might positively enhances the production of some rumen intermediates; however, relationships between inoculated silages and oil supplementation can be presumed in the daily production of trans‐vaccenic acid. Copyright © 2009 Society of Chemical Industry