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. 2015 Aug 22;6(1):38. doi: 10.1186/s40104-015-0037-9

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© Subramaniam and Kim. 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Effect of supplemental clay on noxious gas content in feces from weanling pigs. Dietary treatments were as follows: CON: basal diet, PC: basal diet with 44 mg/kg of Tylosin, HC1: basal diet with 3 g/kg Anion plus powder, HC2: basal diet with 6 g/kg Anion plus powder. In this study, the inclusion of HC2 treatment decreased NH3 emission (P < 0.05) compared with other treatments. No difference was observed on H2S. Nitrification of sludge is accelerated by the use of Anion, which selectively exchanges NH₄ ⁺ from wastewater and provides an ideal growth medium for nitrifying bacteria that can oxidise NH₄ ⁺ to nitrate. The supplementation of the diet with 3 g/kg Anion concomitantly decreased the noxious gas emission [28]