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Nutrient Buildup in Sand Litter

B. D. Bowers^*, J. B. Hess^*, S. F. Bilgili^*, J. P. Blake^*, M. K. Eckman^* and E. A. Guertal

^* Department of Poultry Science, Auburn University; Auburn, Alabama 36849-5416
Department of Agronomy and Soils, Auburn University; Auburn, AL 36832-5412

Correspondence: J. B. Hess, E-mail: jhess{at}acesag.auburn.edu

There has been increasing need for alternative bedding sources for rearing broilers. Sand has been evaluated as a potential bedding source. One problem that might be encountered using sand could be excessive buildup of nutrients, because broilers are typically reared on sand longer than other materials without complete litter removal. High levels of nutrients in poultry litter could create environmental problems when applied to pastures or agronomic crops. This study was designed to quantify the progression of nutrient buildup in sand litter for subsequent flocks. Pooled litter samples were obtained after each flock from broiler houses using sand. The samples were evaluated at the Auburn University Soil Testing Laboratory. Results are reported on a dry-matter basis. Nutrients were measured and minerals were evaluated with a spectrometer. Results showed a significant increase (P < 0.05) in nutrient content in sand houses over time (N 0.74 and 2.26%; P 0.32 and 1.25%; K 0.45 and 1.93%, for flocks 1 and 5, respectively). Nutrient levels in sand litter were similar or lower than those on pine shavings. In general, nutrients in sand increased over time. Sand litter when compared with pine shaving litter had slightly lower nutrient levels on a percentage or parts per million basis after 9 flocks.

Key Words: sand • litter • pine shavings • nutrient level • broiler