The additional effect of cinnamon leaf powder (Cinnamomum burmanni Ness ex. BI) as a source of cinnamaldehyde on in vitro gas and methane production

Ruminant farming produces massive amounts of methane which contributes to global warming, while methane production also indicates inefficient use of feed nutrients. Cinnamaldehyde can reduce methane production by binding to feed protein. One example of a source of cinnamaldehyde is cinnamon leaves. This study aimed to determine the effect of a natural bioactive compound in the form of cinnamaldehyde from cinnamon leaf using in vitro method for rumen fermentation on gas production and methane mitigation. The fermentation gas production method by Menke and Steingass was used in this research with an incubation period of 48 hours. The sample used was cinnamon leaf powder. The proportion of forage and concentrate is 60:40, where the concentrate consists of 90 wheat bran pollard and 10 soybean meal. The treatments applied in this research were different levels of addition of cinnamon leaf powder, namely levels of 0, 1, 2, 3, and 4 DM of feed. The observed parameters included gas production, digestible dry matter (DDM), digestible organic matter (DOM), as well as methane (CH4) and carbon dioxide (CO2) production. The data collected will be examined through one-way analysis of variance (ANOVA) followed by Duncan Multiple Range Test (DMRT). The results of the research showed the production of gas when adding cinnamon leaf powder with a percentage of 2 DM of feed showed the highest results (p<0.05) compared to adding other percentages. The addition of cinnamon leaf powder with a percentage of 2 DM of feed showed the lowest CH4 and CO2production results compared to the addition of cinnamon leaf powder at other percentages (p<0.05). DDM and DOM values in the rumen showed the lowest results (p<0.05) due to the addition of cinnamon leaf powder at a percentage of 4 DM of feed compared to all treatments. The research brought out the conclusion that the addition of 2 cinnamon leaf powder which is equivalent to cinnamaldehyde of 32 mg/kg DM can increase gas production in the rumen and reduce CH4 production also CO2production in the rumen in vitro. © 2024, Fundacion CIPAV. All rights reserved.