氨基酸螯合鐵（Amino acid chelated iron）作為動物補鐵劑

以硫酸亞鐵為代表的無機鐵鹽補鐵劑，由于無機鐵鹽容易與飼料中的脂肪和維生素等發(fā)生反應，從而降低飼料的營養(yǎng)價值。有些無機鐵鹽還對動物機體消化道具有刺激作用，導致機體出現(xiàn)消化道疾病。此外，無機鐵鹽補鐵劑化學性質活躍，在動物消化道中易受到其他因素的影響，因此其生物學利用率也較低。富馬酸亞鐵以及檸檬酸亞鐵在內的簡單的有機酸鐵鹽。相對于無機鐵鹽，簡單的有機酸鐵鹽具有較好的溶解性和較高的生物學利用率，更易被機體吸收。飼料中添加富馬酸亞鐵可以提高仔豬日增重并降低其腹瀉率。在母豬日糧中添加富馬酸亞鐵，其所產的仔豬在生長性能和血液指標上要顯著優(yōu)于硫酸亞鐵組的仔豬。然而一些有機酸鐵鹽的應用效果不如硫酸亞鐵的，效果不穩(wěn)定。甘氨酸鐵和賴氨酸鐵等在內的氨基酸螯合鐵，這類補鐵劑中的鐵離子以配位鍵的形式與氨基酸結合，形成具有環(huán)狀結構的螯合物。與前兩種補鐵劑相比，氨基酸螯合鐵生物具有利用率高、化學穩(wěn)定性好和利于環(huán)保的特點，因而成了新型微量元素制劑研究的熱點

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抗壞血酸錳Manganese Ascorbate、抗壞血酸亞鐵Ferrous Ascorbate、賴氨酸甘氨酸鎂Magnesium Lysinate Glycinate、甘氨酸谷氨酰胺鎂Magnesium Glycinate Glutamine、檸檬酸蘋果酸鎂Magnesium Citrate Malate、檸檬酸鍶Strontium Citrate、檸檬酸錳Manganese Citrate、檸檬酸銅Copper Citrate、天門冬氨酸鋰Lithium Aspartate、牛磺酸硒Selenium Taurate

Amino acid chelated iron as animal iron supplement

The inorganic iron salt supplement represented by ferrous sulfate is easy to react with the fat and vitamins in the feed, thus reducing the nutritional value of the feed. Some inorganic iron salts also have a stimulating effect on the digestive tract of animals, resulting in digestive tract diseases. In addition, the inorganic iron salt iron supplement is chemically active and susceptible to other factors in the digestive tract of animals, so its biological availability is also low. Simple organic acid ferric salts including ferrous fumarate and ferrous citrate. Compared with inorganic iron salt, simple organic acid iron salt has better solubility and higher biological utilization rate, and is easier to be absorbed by the body. Adding ferrous fumarate to feed can increase daily gain and decrease diarrhea rate of piglets. When ferrous fumarate was added to sow diet, the piglets produced by ferrous sulfate group had significantly better growth performance and blood indexes than those in ferrous sulfate group. However, the application effect of some organic acid ferric salts is not as good as that of ferrous sulfate, and the effect is unstable. Amino acid chelate iron, including iron glycine and iron lysine, iron ions in this kind of iron supplement combine with amino acids in the form of coordination bonds to form a ring structure chelate. Compared with the first two kinds of iron supplements, amino acid chelated iron biological has the characteristics of high utilization rate, good chemical stability and environmental protection, so it has become a hot spot in the study of new trace element preparations

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Manganese Ascorbate, Ferrous Ascorbate, Magnesium Lysinate Glycinate, Magnesium glutamine Glycinate Glutamine, Magnesium Citrate Malate, Strontium Citrate, Manganese Citrate, Copper Citrate, Lithium aspartate Aspartate, Selenium Taurate.