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Effect of Dietary Supplementation on Vanadium Commercial Egg-Type Laying Hens

Department of Animal Sciences, University of Florida, P. O. Box 110910, Gainesville, FL 32611-0910; Phone: (352) 392-1958; FAX: (352) 392-3922

G. D. Butcher

Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, P. O. Box 100136, Gainesville, FL 32610-0136

Correspondence: R. D. Miles, E-mail:miles{at}animal.ufl.edu

A 56-d experiment was conducted with 32-wk-old Single Comb White Leghorn hens to investigate the influence of dietary supplementation of vanadium (V) on performance, hatchability, hatch residue, and excreta moisture. Ammonium metavanadate was added to a corn and soybean meal control diet to supply 20, 40, or 60 mg V/kg diet. A concentration as low as 20 mg V/kg diet caused a decline in egg interior quality and percentage of total hatch and an increase in excreta moisture. Feeding 40 and 60 mg V/kg diet resulted in a significant increase (P 0.05) in excreta moisture and decreased feed consumption, egg fertility, hatchability, and egg production. Embryo malposition was unaffected by dietary V, but embryonic mortality and unpipped eggs were increased by dietary concentrations of 60 mg V/kg diet.

Key Words: vanadium • layer • performance • fertility • hatchability