Physico-Chemical Properties of Clay Minerals and Their Use as a Health Promoting Feed Additive
Małgorzata Nadziakiewicz , Sylwia Kehoe , Piotr Micek
AbstractThe contamination of feeds with microbiological or toxicological agents can affect health, productivity and safety of livestock animals and their products. The treatment of feedstuffs to lower the content of undesired substances before feeding is expensive and labor intensive, therefore an alternative is to reduce their gastrointestinal absorption. Different feed additives are available, however the use of clays and clay minerals are ideal for this purpose due to their high specific surface area, adsorption capacity, low or null toxicity for the animal and low cost. A large number of clays available to producers have different structures that are dependent on their mining source, causing diffculty in proper categorization. For this reason properties of phyllosilicates with 1:1 layers (one sheet of SiO4 tetrahedra joined to one sheet of Al- or Mg-octahedra), 2:1 layers (one sheet of Al- or Mg-octahedra between two sheets of Si-tetrahedra), and 2:1:1 layers (a basic 2:1 structure with an interlayer brucite (with cations Mg2+ or Fe2+) or gibbsite (with cation Al3+) sheet) and tectosilicates are described. The role of clay minerals in animal production shows a reduction in diarrhea, better feed conversion ratio, and improved health of many livestock species due to their specific adsorption potential of many feed mycotoxins. Overall, there is growing interest in the use of clays due to their beneficial characteristics, absence of primary toxicity and success in research to reduce animal disease and improve animal production and safety of animal products.
|Journal series||Animals, ISSN 2076-2615, e-ISSN 2076-2615, (N/A 100 pkt)|
|Publication size in sheets||0.7|
|Keywords in English||phyllosilicates; clays; feed decontamination; mycotoxins; animal health; product quality|
|License||Journal (articles only); author's original; ; after publication|
|Publication indicators||: 2018 = 1.148; : 2018 = 1.832 (2)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.