Content of Heavy Metals in Fodder from Sward of Grasses and Legumes from Selected Organic Farms in Poland as a Criterion of Fodder Quality
Marcin Niemiec , Monika Tabak , Jakub Sikora , Maciej Chowaniak , Monika Komorowska , Barbara Filipek-Mazur
AbstractLimited fertilization, often forced by conducting an organic farming production, may lead to deficiency of some elements in soil. This may translate into a decrease in the quantity and quality of crop yields. The aim of the research was to assess the quality of sward from organic farms in the context of using the sward for feed purposes. 55 organic farms were analyzed (25 additionally conduct conventional animal production). Samples of mixed grasses and small-seed legumes were collected from each farm. After mineralization, content of heavy metals was determined in the plant material by ICP-OES method. The content of zinc in the samples was generally too low, also the copper content in some of the samples was too low for using the biomass for feed purposes. A very high content of iron and manganese was observed in almost all of the samples. Mean iron content in the samples was approximately 8 times higher, and manganese – approximately 3 times higher than the optimum content in fodder. A high content of Cd, Pb, Cr and Ni was not observed. The sward from the animal production farms had a lower mean content of zinc and lead than the sward from the farms without animals; the differences in the content of other analyzed elements were not statistically significant. Feeding animals exclusively with roughage obtained from the studied farms could pose a risk to the animal health and decrease animal productivity.
|Publication size in sheets||0.5|
|Book||Krakowiak-Bal Anna, Vaverkova Magdalena (eds.): Infrastructure and Environment, 2019, Springer, ISBN 978-3-030-16541-3, [978-3-030-16542-0], 392 p., DOI:10.1007/978-3-030-16542-0|
|Keywords in English||Sward, Organic farming, Heavy metals, Iron Manganese|
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