Ferrous fumarateis absorbed in the duodenum and upper jejunum as ferrous ions in animals. Most of the absorbed iron is involved in the synthesis of hemoglobin in the bone marrow, the rest is stored in the form of ferritin and hemosiderin in the reticuloendothelial cells of the bone marrow, liver and spleen, and some in the intestinal mucosal cells. Iron is excreted mainly through the intestines and skin, and a small amount is excreted in the urine and sweat glands. Most iron can be reused when the hemoglobin molecule is destroyed and released.
As feed additive, ferrous sulfate is easy to deliquesce and agglomerate so it must be dried before processing. In addition, ferrous sulfate is unstable and easy to be oxidized into ferric iron which is not easy to be absorbed and used by animals during processing and storage. At the same time because of its hygroscopic and reductive, some vitamins and other ingredients in the feed are easy to produce damage, so it requires excessive addition of vitamins and other nutrients, thus increasing the cost of feed manufacturers and farms, households.
Newborn piglets iron can oral ferrous sulfate or ferrous chloride, but the effect is not ideal, and use injection way more iron (holing needle like iron, iron dextran, etc.), while iron injection way which can effectively prevent iron-deficiency anemia, lactation but adopted time-consuming, laborious and shortcomings, such as convenient operation is not easy cause stress. Adding ferrous fumarate into the feed of sows within two or three weeks before and after delivery can achieve the same effect of preventing anemia in pigs as injecting iron preparation into piglets, but it avoids the defects such as time-consuming and labile iron injection, inconvenient operation and so on, thus reducing the labor intensity of workers and improving the work efficiency.
Because of ferrous sulfate and other inorganic salt in feed manufacturing, transportation and livestock feed in the digestive tract by Fe2 + easily oxidized to cannot be absorbed by animal Fe2 +, cause the body burden and resource waste, and the ferrous fumarate and chelating ferrous ions of iron is relatively stable, not easy to be oxidized to ferric iron ion, and its absorption efficiency is high, serum iron rise quickly is also stable, so that the pig skin ruddy, bright and clean bright, a significant reduction in the flow field.
Ferrous sulfate of SO42 - is a strong acid radical ion, neither nutrients or metabolites, it exists interfere with or even destroy the body acid-base balance, to make the body grow bad, and the fumaric acid radical ion in the ferrous fumarate can participate in the Krebs cycle, form for ATP for the body's metabolism, or as carbon synthesis of amino acids, and further synthesis of body protein. Organic iron can be directly and effectively deposited in protein, which can reduce egg breaking rate and improve yolk color.
Ferrous fumarate can improve breeding performance, reduce litter death, increase litter weight, prevent anemic piglets and increase the survival rate of weaned piglets. The phytic acid, oxalic acid, phosphate, tannin and cellulose contained in the diet often hinder the absorption of inorganic trace elements, thus reducing the biological potency of trace elements. Organic trace elements are relatively avoided by phytic acid, oxalic acid, phosphate, tannin, cellulose and other factors contained in the diet.
The interaction between inorganic trace elements is complex. On the one hand, the antagonism between elements will reduce the utilization rate of trace elements. On the other hand, the increase in the amount of one kind of trace elements requires the amount of other trace elements to be increased accordingly, which is bound to cause the waste of resources and environmental pollution. Organic trace elements belong to green and environment-friendly products, with high biological potency, relatively small amount of addition, and high absorption and utilization rate, so the discharge of trace elements is less, reducing environmental pollution.
