Evidence of Vanadium Toxicity Resulting from the Use of Certain Commercial Phosphorus Supplements in Chick Rations

Abstract

NEW sources of nutrients are continually becoming available for use manufacturing poultry feeds. Tricalcium phosphate produced by a new supplier was recently delivered to our Experiment Station after competitive bids were submitted to fill an order. Use of this material in various types of rations resulted in chicks growth data which were not similar to those obtained with previously used supplements. When using this product in experiments designed to study the value of fish meals and meat meals in broiler rations, it was found that these animal protein materials promoted growth responses greater than had previously been obtained. This report presents results of studies conducted to compare six different commercial phosphorus supplements as ingredients in chick diets. Day old, sexed, broiler type chicks from a commercial hatchery were randomly distributed into 72 groups containing five males and five females. The groups were brooded in units of electrically heated battery…