Effects of disodium malate on microbial growth and
rumen fermentation of two diets in Rusitec
fermenters

The objective of this study was to investigate the effects of disodium malate (6.65 mM) on the in vitro fermentation of two diets (F (40% concentrate) and C (90% concentrate)). Malate treatment increased (P<0.001) dry matter and neutral-detergent fibre disappearance with both diets. Daily production of propionate and butyrate increased (P<0.001) and the ratio CH₄:VFA decreased (P<0.001) by adding malate for both diets. Whereas adding malate to F diet produced an increase (P<0.05) in acetate production, this effect was not observed with C diet. In addition, malate treatment increased (P<0.05) the daily growth of solid-associated bacteria with F diet, but no effects (P>0.05) were detected with C diet. The results seem to indicate that disodium malate stimulated the in vitro fermentation of both diets, but a greater response was observed with diet F.

CITATIONS (2):

Effects of malic acid on microbial efficiency and metabolism in continuous culture of rumen contents and on performance of mid-lactation dairy cows
C.J. Sniffen, C.S. Ballard, M.P. Carter, K.W. Cotanch, H.M. Dann, R.J. Grant, P. Mandebvu, M. Suekawa, S.A. Martin
Animal Feed Science and Technology

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Effects of malic acid on rumen fermentation, urinary excretion of purine derivatives and feed digestibility in steers
Q. Liu, C. Wang, W. Yang, Q. Dong, K. Dong, Y. Huang, X. Yang, D. He
animal

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1230-1388

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