humic substances
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Effect of Diet Supplemented with Natural Humic Compounds and Sodium Humate on Performance and Selected Metabolic Variables in Broiler Chickens
Alena Šamudovská, Mária Demeterová
2010, Vol. 79, Issue 3, pp. 385-393 -
Effect of Humic Acids on Lead Accumulation in Chicken Organs and Muscles
Z. Zralý, B. Písaříková, M. Trčková, M. Navrátilová
2008, Vol. 77, Issue 3, pp. 439-445