Acidified clay litter amendment

Two broiler poor pen experiments lasting 50 and 48 days, respectively, were conducted to compare the performance of a new, granular, acidified clay po ultry litter amendment (Poultry Guard (TM)) and two other commercially avai lable products. In Experiment 1, ammonia levels and litter pH were compared for the acidified clay, sodium bisulfate, and alum versus an untreated con trol. All three litter treatments reduced ammonia levels for up to 30 days relative to the untreated control. Broiler performance benefits and reduced beetle counts were obtained for all three litter amendments. In Experiment 2, the effect of increasing acid loading of the acidified clay (from 36% t o 46% acid) were compared to alum and untreated control. As before, the lit ter amendments provided benefits (ammonia, litter pH reduction, and broiler performance gains) when compared to the untreated control. The 46% acid-lo aded clay gave a statistically significant improvement in adjusted feed con version and breast blister scores, but was matched by the 36% acid-loaded c lay and alum treatments in most other areas.