Document Type : Review Article
1 Lecturer of Payam Noor university, Faculty of Agriculture, Qom, Iran
2 Academic member of Agriculture & Natural Resources Research Center, Qom, Iran
Chelating is the chemical process by which a mineral (iron, cobalt, copper, zinc, and manganese) is combined with a mixture of amino acids and peptides. The resulting substances are known as chelates. Another descriptive term, proteinates, refers to the amino acid bond. These chelated minerals are thought to be more digestible than nonchelated forms. In other words, chelation makes the minerals more bioavailable (able to be absorbed and used for bodily functions), chiefly by shielding them from the effects of other dietary elements in the animal’s digestive tract. Proteinates or chelates are described as organic minerals in contrast to inorganic minerals, those that are not bound to amino acids
Holden,LA; Muller,LD; Moore,DA; Hammerschmidt,KJ (1996) Evaluation of chelated Cu, Mn, and Zn for lactating dairy cows. J. Dairy Sci., 79 (Suppl. 1) 198 (Abstr.).
Hussein,HS; Fahey,GC; Wolf,BW; Johnson,AB (1993)Effect of cobalt glucoheptonate on in vitro fiber digestion of forages and fiber-containing byproducts. J. Anim. Sci. 71 (Suppl. 1) 292.
Jacques,K; Newman,K (1993) Effect of level and source of copper, zinc and manganese supplementation of milk repalcer on performance, health and plasma mineral levels of Holstein calves. J. Anim. Sci. 71 (Suppl. I) 292.
Kats,LJ;Nelssen,JL; Goodband,RD~ Tokach,MD; Friessen,KG; Owen,KQ; Richert,BT; Dritz,SS (1994) Effect of chelated manganese on growth performance and carcass of finishing pigs. Kansas Swine Day, 165. Garden City, KS.
Kegley,EB; Spears,JW (1994) Bioavailability of feed grade copper sources (oxide, sulfate or lysine) for growing cattle. J. Anim. Sci. 72, 2728.
Littledike,ET; Wittum, TE; Jenkins, TG (1994) Relationship between body composition and liver and serum copper and zinc in mature cows from nine breeds. J. Anim. Sci. 72 (Suppl. 1) 131.
Nockels,CF; DeBonis,J; Torrent,J (1993)Stress induction affects copper and zinc balance in calves fed organic and inorganic copper and zinc sources. J. Anim. Sci. 71,2539-2545.
Olson,PA; Brink,DR; Hickook,DT; Deutscher,GH; Colburn,DJ (1996) Effect of supplementing trace minerals (Cu, Co, Zn and Mn) after calving on productivity of two year old cows. J. Anim. Sci. 74 (Suppl. 1),261.
Patton,RS (1990) Chelated Minerals: What are they. Do they work? Feedstuffs. Feb 26.