The effect of copper is the formation of catalytic iron in heme, promote the growth of early erythroid maturation. Participate in osteogenesis, participate in the hair and feather pigmentation and hyperkeratosis, participation and enzyme related copper containing protein formation. Deficiency: is the typical symptoms of anemia, may also delay the growth, hair pigment faded, bone formation was blocked, bone and joint abnormalities, leg joints weak and feeble, forelegs bent, chicken skeletal deformities, lamb ataxia symptoms. The influencing factors of copper absorption: the content of feed calcium, iron, zinc, sulfur, molybdenum high will affect the absorption of copper.
Can be used as feed additive of copper copper sulfate, copper carbonate source, copper oxide, copper chloride, copper phosphate, pyrophosphate copper, copper, copper iodide, copper gluconate, copper amino acid chelate. One of the most commonly used is copper sulfate, followed by copper oxide and copper oxide, copper utilization than copper sulfate difference.
（1） characteristics and biological
The catalytic effect, which can accelerate the oxidation of unsaturated fatty acid destruct vitamins.
Rate of good water solubility, biological utilization rate is 100%
The conversion coefficient of 3.93, general is 4.
(2) Other copper sources:
The basic copper carbonate: good chemical stability; bioavailability is poor; alkaline, the destruction of vitamin more serious. The conversion coefficient is 1.74
The copper chloride: good water solubility; biological utilization close to copper sulfate; acidic with certain fungi.
The copper oxide: insoluble in water, poor bioavailability; low price, good fluidity, no interference to other group premix. Conversion coefficient is 1.25.
Amino acid chelated copper: difficult manufacture, high cost, price is expensive; stability and biological utilization.