Abstract
This study was conducted to investigate the effects of supplemental Lactobacillus with drinking water on growing performance, nutrients digestibility, intestinal microflora, fecal NH3-N and VFA of broiler chicks. Four hundreds and eighty one day broiler chicks were divided into no supplement (none) and three drinking water, 10$^{6}$ (T1), 10$^4$(T2) and 10$^2$ cfu/ml water(T3) with Lactobacillus reuteri for five week. Weight gain of T2 was the highest in all treatments(P＜0.05), and other supplements also tended to increase but there were not significantly difference compared to the none. Feed intake and feed conversion were not statistically different of all treatments. Dry Matter digestibility of Lactobacillus treatments was tended to improve compared to that of none, but was not significantly different. Protein and fat digestibility were also tended to Improve In Lactobacillus treatments relative that of control(P＜0.05), whereas ash digestibility was not consistency. Total Lactobacillus spp. of birds fed Lactobacillus was significantly higher in cecum at five weeks(P＜0.05), but was not different at ileum. E. coli and Salmonella were not difference by treatments. In conclusion, feeding Lactobacillus increase performance and nutrients digestibility of broiler chicks and Improve environments of house.
육계 초생추 480수를 공시하여 Lactobacillus reuteri가 $10^{6}$, $10^4$ 및 $10^2$/ml로 조정된 첨가구와 생산성, 장내 미생물 변화 및 영양소 소화율을 무첨가와 비교하였다. 증체량은 첨가구가 가장 증가하였으며, 장내 미생물은 처리간 차이가 없었다. 조단백질과 조지방 소화율은 유산균 첨가구가 개선되었으며 $10^2$cfu 첨가구는 무첨가와 차이가 없었다. 이상의 결과에서 유산균은 생산성과 영양소 소화율을 향상시키는 것으로 나타났으며 적정수준은 $10^4$cfu/ml water로 판단된다.
