The Case for Complexed Copper

The nutritional requirement of copper for layers is unknown. Typically copper is supplemented at 8 to 25 ppm in layer diets. However, it is important to know that zinc, calcium and iron can reduce copper availability. Layer diets contain high levels of calcium, which acts as an antagonist to copper. Providing a more bioavailable form of copper in the layer diets will be beneficial and assure proper copper status in the bird.

Many of the copper dependent enzymes affect the immune system. Research conducted in broilers showed that feeding diets supplemented with zinc, manganese and copper complexes increased ND titers above titers of broilers fed inorganic trace minerals or diets supplemented with zinc and manganese complexes (Figure 15). Copper also is important for enzymes that are necessary to increase structural strength and elasticity of connective tissue such as the eggshell membrane and blood vessels, and increase bone strength. These components are critical to maximize egg production. Providing copper in a highly bioavailable, amino acid complex form is an excellent way of ensuring maximum layer performance.

Figure 15. Zinc, Manganese and Copper Amino Acid Complexes Improve Broiler ND Titer^a