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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The number of diarrhoea treatments per pig per day; PC = positive control group with medicinal zinc oxide; NC = negative control group without medicinal zinc oxide; SP = soy protein concentrate; SB = soybean meal; XLA = X-low-protein + amino acids.