Influence of chelated forms of trace elements on the live weight and livability of rearing stock of broilersElena Pilyukshina, Vladimir Khaustov, Aleksandr Ozhimkov, Valentina Rusanova, Alexey Popelyaev and Ludmila BondyrevaE3S Web Conf., 203 (2020) 01023DOI: https://doi.org/10.1051/e3sconf/202020301023