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Anim Biosci > Accepted Articles
https://doi.org/10.5713/ab.22.0258    [Accepted] Published online January 10, 2023.
Evaluation of Megasphaera elsdenii supplementation on rumen fermentation, production performance, carcass traits and health of ruminants: A meta-analysis
Irwan Susanto1,2  , Komang G. Wiryawan1  , Sri Suharti1  , Yuli Retnani1  , Rika Zahera1,2  , Anuraga Jayanegara1,2,* 
1Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia
2Animal Feed and Nutrition Modelling (AFENUE) Research Group, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia
Correspondence:  Anuraga Jayanegara, Tel: +62-251-8626213, Fax: +62-251-8626213, Email: anuraga.jayanegara@gmail.com
Received: 3 July 2022   • Revised: 24 October 2022   • Accepted: 28 November 2022
This study was conducted to evaluate the use of Megasphaera elsdenii as a probiotic on rumen fermentation, production performance, carcass traits and health of ruminants by integrating data from various related studies using meta-analysis.
A total of 32 studies (consisted of 136 data points) were obtained and integrated into a database. The parameters integrated were fermentation products, rumen microbes, production performance, carcass quality, animal health, blood and urine metabolites. Statistical analysis of the compiled database used a mixed model methodology. Different studies were considered random effects, while M. elsdenii supplementation doses were considered fixed effects. P-values and the Akaike information criterion were employed as model statistics. The model was deemed significant at p < 0.05 or had a tendency to be significant when p-value between 0.05 < p < 0.10.
Supplementation with M. elsdenii increased (p<0.05) some proportion of fermented rumen products such as propionate, butyrate, isobutyrate, and valerate, and significantly reduced (p<0.05) lactic acid concentration, acetate proportion, total bacterial population and methane emission. Furthermore, the probiotic supplementation enhanced (p<0.05) livestock production performance, especially in the average daily gain and body condition score. Regarding the carcass quality, hot carcass weight and carcass gain were elevated (p<0.05) due to the M. elsdenii supplementation. Animal health also showed improvement as indicated by the lower (p<0.05) diarrhoea and bloat incidences as well as the liver abscess. However, M. elsdenii supplementation had negligible effects on blood and urine metabolites of ruminants.
Supplementation of M. elsdenii is capable of decreasing ruminal lactic acid concentration, enhancing rumen health, elevating some favourable rumen fermentation products, and in turn, increasing production performance of ruminants.
Keywords: Acidosis; Fermentability; Health; Megasphaera elsdenii; Probiotic

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