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Spring, Peter; Bracher, A. (2013). Survey of current Swiss pig feeding practices and potential for ammonia emission reduction Journal of Applied Animal Nutrition, 2 Cambridge University Press 10.1017/jan.2014.3
Tavares, Teresa; Mourão, José Luís; Kay, Zoe; Spring, Peter; Vieira, José; Gomes, António; Vieira-Pinto, Madalena (2013). The effect of replacing inorganic trace minerals with organic Bioplex® and Sel-Plex® on the performance and meat quality of broilers Journal of Applied Animal Nutrition, 2 Cambridge University Press 10.1017/jan.2014.2
