C R Soliva1, I K Hindrichsen, L Meile, M Kreuzer, A Machmüller. 1. Institute of Animal Science, Animal Nutrition, Institute of Food Science, Laboratory of Food Microbiology, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland. carla.soliva@inw.agrl.ethz.ch
Abstract
AIMS: To identify the most effective mixture of non-esterified lauric (C12) and myristic (C14) acid in suppressing ruminal methanogenesis, and to investigate their effects on the methanogenic population. METHODS AND RESULTS: C12/C14 mixtures were incubated with rumen fluid using the Hohenheim gas test apparatus. Methane production and the numbers of Archaea declined with an increasing proportion of C12. With a 2 : 1 proportion of C12/C14, the maximum methane-suppressing effect (96%) was achieved similar to that with C12 alone. The proportions of the individual methanogenic orders of total methanogens were altered by varying the C12/C14 ratio. CONCLUSIONS: Although C14 alone had no effect on methanogenesis, C14 enhanced the methane-suppressing effect of C12 in certain mixtures. SIGNIFICANCE AND IMPACT OF THE STUDY: The results support strategies for an environment-friendly ruminant nutrition as it was demonstrated that part of the less palatable C12 could be replaced by C14 without losing its methane-suppressing potential.
AIMS: To identify the most effective mixture of non-esterified lauric (C12) and myristic (C14) acid in suppressing ruminal methanogenesis, and to investigate their effects on the methanogenic population. METHODS AND RESULTS:C12/C14 mixtures were incubated with rumen fluid using the Hohenheim gas test apparatus. Methane production and the numbers of Archaea declined with an increasing proportion of C12. With a 2 : 1 proportion of C12/C14, the maximum methane-suppressing effect (96%) was achieved similar to that with C12 alone. The proportions of the individual methanogenic orders of total methanogens were altered by varying the C12/C14 ratio. CONCLUSIONS: Although C14 alone had no effect on methanogenesis, C14 enhanced the methane-suppressing effect of C12 in certain mixtures. SIGNIFICANCE AND IMPACT OF THE STUDY: The results support strategies for an environment-friendly ruminant nutrition as it was demonstrated that part of the less palatable C12 could be replaced by C14 without losing its methane-suppressing potential.
Authors: Tara M Webster; Adam L Smith; Raghav R Reddy; Ameet J Pinto; Kim F Hayes; Lutgarde Raskin Journal: Microbiologyopen Date: 2016-03-14 Impact factor: 3.139
Authors: Carlos A Contreras-Dávila; Norwin Zuidema; Cees J N Buisman; David P B T B Strik Journal: Biotechnol Biofuels Date: 2021-12-06 Impact factor: 6.040