The purpose of this study was to evaluate the effect of sea urchin shell powder, used in broiler diet, on Esherichia coli and Salmonella in litter produced by the broilers. A total of 120 broiler chickens were fed 1 of 3 treatment diets (10 chickens per pen) in a randomized block design treatments with 4 replications. Sea urchin shell powder was used in the concentrations of 0.5% and 1% in the basal diets; the control diet was constituted of basal diet. During the 3-week feeding trials, none of the treatments significantly affected the E. coli populations in poultry litter at weeks 0 and 1, nor did they affect the and S. enterica populations at weeks 1 and 3. However, dietary sea urchin shell powder addition affected the population of E. coli at weeks 2 and 3, and that of S. entericaat weeks 0 and 2 (P<0.05). It is therefore concluded that the use of dietary sea urchin shell powder (0.5% and 1%) will be beneficial enough to reduce E. coli, rather than S. enterica in poultry litter over short-term periods.

1. 서 론
 2. 연구방법
  2.1. 시험설계
  2.2. 깔짚 샘플채취 및 E.coli와 Salmonella 분석
  2.3. 통계처리
 3. 결과 및 고찰
 4. 결 론
 감사의 글
 REFERENCES

• 최인학(중부대학교 애완동물자원학과) | In Hag, Choi (Department of Companion Animals and Animal Resources Science, Joongbu University) Corresponding author