Impact of two probiotic Lactobacillus strains feeding on fecal lactobacilli and weight gains in chicken.
Two probiotic strains, Lactobacillus agilis JCM 1048 and L. salivarius subsp. salicinius JCM 1230 isolated from chicken intestine, exhibited probiotic characteristics that can be applied for chicken production. After 7 days of probiotic feeding (FD7), the count of intestinal lactobacilli in the probiotic group (group P, n=10) was significantly (p<0.05) higher than that in the control group (group C, n=9). After 40 days of probiotic feeding (FD40), the lactobacilli and enterococci counts were stable but the Enterobacteriaceae number was significantly reduced (p<0.05). A total of 163 isolated lactobacilli were identified as the L. acidophilus/gallinarum group (49.7%), L. agilis (30.7%), L. salivarius (9.2%), L. reuteri (9.2%), and Lactobacillus spp. (1.2%). The probiotic lactobacilli positively affected the Lactobacillus biota in chickens at FD7, with a significant increase in the number (p<0.05) of L. agilis and group P. The viable counts of each Lactobacillus species at FD40, however, showed no differences between two groups. An increasing incidence of L. agilis was also noted with probiotic feeding. The probiotic effect of two strains resulted in significantly increased weight gains (10.7%) of group P in comparison with group C at FD40 (p<0.01).
Lan
Pham Thi Ngoc
PT
Institute of Biotechnology, National Center for Natural Science and Technology, Hoang Quoc Viet Street, Cau Giay District, Hanoi, Vietnam.
Binh
Le Thanh
le T
Benno
Yoshimi
Y
D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000254:growth & development* / Q000382:microbiology; D004755:Enterobacteriaceae / Q000302:isolation & purification; D005243:Feces / Q000166:cytology / Q000382:microbiology; D007413:Intestinal Mucosa / Q000378:metabolism; D007422:Intestines / Q000382:microbiology; D019344:Lactic Acid / Q000378:metabolism; D007778:Lactobacillus / Q000145:classification / Q000302:isolation & purification / Q000502:physiology; D007779:Lactobacillus acidophilus / Q000254:growth & development / Q000302:isolation & purification; D010641:Phenotype; D019936:Probiotics; D015430:Weight Gain
D019344:Lactic Acid