Recent research has demonstrated that treating poultry litter with alum (aluminum sulfate) and aluminum chloride can remove environmental threats (ammonia, soluble phosphorus and odor) posed by litter. However, scientific information available on heavy metal in poultry litter with liquid aluminum chloride is still lacked. The purpose of this study was to investigate the effects of applying liquid aluminum chloride to rice hulls on heavy metals and to provide basic information to producers. Six hundred 0-d-old broiler were assigned to 4 treatments (control, 100 g, 200 g and 300 g of liquid AlCl3/kg of rice hulls, respectively) with 3 replicates of 50 birds. The experimental period lasted for 6 weeks. Liquid AlCl3 was sprayed on the rice hulls surface using a small hand pump. Total Al contents increased (P<0.05) with the increasing levels of liquid AlCl3 levels over time in comparison with control groups. Total Cu and Pb were lowered in all liquid AlCl3 treatments compared with the controls during 6 weeks. Significant differences in all treatments were found for total Cu contents at 2, 3 and 5 weeks and total Pb at 0, 1, 2 and 3 weeks. Total Zn contents decreased with time when compared with controls. However, no significant differences in total Zn contents were observed among all treatments. In light of environmental managements, spraying liquid AlCl3 to rice hulls indicated the significant advantages in reducing heavy metals as well as improving poultry industrial competitiveness.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험 설계 및 시료 채취
  2.2. 화학제재 첨가 비율
  2.3. 중금속함량 분석
  2.4. 통계처리
 3. 결과 및 고찰
 4. 결 론
 참 고 문 헌

• 김창만(숙명여자대학교 화학과) | Chang-Mann Kim (Department of Chemistry, Sookmyung women’s University)
• 최정훈(한양대학교 화학과) | Jung-Hoon Choi (Department of Chemistry, Hanyang University)
• 최인학(중부대학교 애완동물자원학과) | In-Hag Choi (Department of Companion Animal & Animal Resources Sciences, Joongbu University) Corresponding author