<abstract xmlns="http://www.w3.org/1999/xhtml"> The inhibitory effect of four trace elements on production of volatile fatty acids (VFA) and lactate was evaluated in cultures of rumen contents containing lead, mercury, cadmium and arsenic at 50, 100 and 250 μg/ml. The production of VFA in cultures containing Pb2+, Hg2+, Cd2+ and As5+ at 50 μg/ml was decreased by 15.9, 40.0, 29.1 and 35.6%, respectively. The effect of trace elements on molar profile of VFA was variable, which suggests a different toxic effect of elements tested on different groups of rumen microorganisms. Increasing concentrations of Pb2+ in rumen cultures decreased molar proportion of acetate and increased that of butyrate, whereas Hg2+ and Cd2 increased molar percentages of acetate and decreased butyrate. Lactate concentration in cultures containing Hg2+ increased in a dose-dependent manner from 3.10 to 9.20 μmol/ml. Effects of other trace elements on lactate production were not consistent.</abstract>

The inhibitory effect of four trace elements on production of volatile fatty acids (VFA) and lactate was evaluated in cultures of rumen contents containing lead, mercury, cadmium and arsenic at 50, 100 and 250 μg/ml. The production of VFA in cultures containing Pb2+, Hg2+, Cd2+ and As5+ at 50 μg/ml was decreased by 15.9, 40.0, 29.1 and 35.6%, respectively. The effect of trace elements on molar profile of VFA was variable, which suggests a different toxic effect of elements tested on different groups of rumen microorganisms. Increasing concentrations of Pb2+ in rumen cultures decreased molar proportion of acetate and increased that of butyrate, whereas Hg2+ and Cd2 increased molar percentages of acetate and decreased butyrate. Lactate concentration in cultures containing Hg2+ increased in a dose-dependent manner from 3.10 to 9.20 μmol/ml. Effects of other trace elements on lactate production were not consistent.

Effects of Heavy Metals and Arsenate on the Ovine Rumen Fermentation in Vitro

Institute of Animal Science, Department of Nutrition Physiology & Products Quality, Prague, Czech Republic

Institute of Animal Science Přátelství 815 104 00 Praha – Uhříněves Czech Republic Phone: +420 776 053 360

Agricultura Tropica et Subtropica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Effects of Heavy Metals and Arsenate on the Ovine Rumen Fermentation in Vitro"}

The inhibitory effect of four trace elements on production of volatile fatty acids (VFA) and lactate was evaluated in cultures of rumen contents containing...

Effects of Heavy Metals and Arsenate on the Ovine Rumen Fermentation in Vitro

Published Online: Oct 03, 2014

Page range: 106 - 108

Received: Jun 19, 2014

Accepted: Sep 01, 2014

DOI: https://doi.org/10.2478/ats-2014-0014

Keywords
Trace elements, rumen metabolites, inhibition, lead, mercury, cadmium, arsenic

© Agricultura Tropica et Subtropica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effects of Heavy Metals and Arsenate on the Ovine Rumen Fermentation in Vitro

Published Online: Oct 03, 2014

Page range: 106 - 108

Received: Jun 19, 2014

Accepted: Sep 01, 2014

DOI: https://doi.org/10.2478/ats-2014-0014

KeywordsTrace elements, rumen metabolites, inhibition, lead, mercury, cadmium, arsenic

© Agricultura Tropica et Subtropica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Trace elements, rumen metabolites, inhibition, lead, mercury, cadmium, arsenic