The Case for Complexed Copper

As has been mentioned previously, the nutritional requirement of broiler breeders for copper is unknown. Typically copper is supplemented at 8 to 25 ppm in broiler breeder diets. However, it is important to know that zinc, calcium and iron can reduce copper availability. Broiler breeder diets contain high levels of calcium, which acts as an antagonist to copper (16). Providing a bioavailable form of copper in the breeder diet will be beneficial and assure proper copper status in the bird.

Many of the copper dependent enzymes play a role in 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 9). Copper also is necessary 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 broiler breeder egg production. Providing copper in highly bioavailable amino acid complex form is an excellent way of ensuring maximum broiler breeder performance.

Figure 9. Zinc, Manganese and Copper Amino Acid Complexes Improve Broiler ND Titer^a