The Effect of Cu⁺², Fe⁺² and Cr⁺³ in Mineral Additives Enriched with Biosorption Process Form on Chosen Parameters of in vitro Caecal Fermentation in Laying Hens (Lohmann Brown)

Maciej Janeczek, Katarzyna Chojnacka, Nezir Yasar Toker, Ewa Pecka, Albert Czerski, Zuzanna Witkowska, Aleksander Chroszcz, Wojciech Zawadzki and Mariusz Korczynski

Journal of Animal and Veterinary Advances 11 ( 21 ): 3991 - 3998 , 2012