title: Effects of dietary Lactobacillus plantarum B1 on growth performance, intestinal microbiota, and short chain fatty acid profiles in broiler chickens.
abstract: Two experiments were conducted to determine the effects of Lactobacillus plantarum B1 on broiler performance, cecal bacteria, and ileal and cecal short chain fatty acids (SCFA). The study also determined whether it was necessary to feed Lactobacillus throughout the entire growth period or if the beneficial effects could be obtained by supplementation during the starter or finisher period only. Experiment 1 was conducted with 72 broilers assigned to 2 treatments (N=6). One treatment was the basal diet (Con), and the other was the basal diet supplemented with 2×10(9) cfu/kg L. plantarum B1 (Wh). In experiment 2, 144 one-day-old broilers were assigned to 4 treatments (N=6) including a basal diet (Con), the basal diet supplemented with 2×10(9) cfu/kgL. plantarum B1 during d one to 21 only (St), the basal diet supplemented with L. plantarum B1 during d 22 to 42 only (Fn), and, finally, the basal diet supplemented with L. plantarum B1 from d one to 42 (Wh). Experiment 1 showed that L. plantarum B1 enhanced broiler average daily gain (ADG) and feed conversion ratio (FCR). In experiment 2, during the starter period, broilers in the Wh and St treatments had higher ADG (P<0.05) than broilers in the Con and Fn, while during the finisher period, broilers in the Wh and Fn had higher ADG (P<0.01) and improved FCR (P<0.01) compared with broilers in the Con and St. On d 42, broilers in the Wh and Fn had decreased E. coli (P<0.05) and increased lactic acid bacteria (P<0.05) in their cecal digesta. L. plantarum B1 also increased (P<0.05) ileal mucosal sIgA as well as ileal and cecal SCFA. However, L. plantarum B1 had no effect on intestinal morphology. In conclusion,L. plantarum B1 plays a positive role in broilers. Supplementation during the finisher period or the entire growth period is superior to supplementation during the starter period only.
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Peng
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China.
authors.forename: X F
authors.initials: XF
authors.lastname: Zeng
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China.
authors.forename: J L
authors.initials: JL
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China.
authors.forename: S
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China.
authors.forename: X T
authors.initials: XT
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China.
authors.forename: C L
authors.initials: CL
authors.lastname: Hou
authors.affiliation: Department of Animal and Poultry Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan S7N 5A8, Canada.
authors.forename: P A
authors.initials: PA
authors.lastname: Thacker
authors.affiliation: State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China qiaoshy@mafic.ac.cn.
authors.forename: S Y
authors.initials: SY
authors.lastname: Qiao
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena / Q000187:drug effects; D000818:Animals; D002432:Cecum / Q000378:metabolism; D002645:Chickens / Q000254:growth & development / Q000382:microbiology / Q000502:physiology*; D004032:Diet / Q000662:veterinary; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D000069196:Gastrointestinal Microbiome / Q000187:drug effects*; D007082:Ileum / Q000378:metabolism; D048191:Lactiplantibacillus plantarum / Q000737:chemistry*; D019936:Probiotics / Q000008:administration & dosage / Q000494:pharmacology*; D011897:Random Allocation; D013997:Time Factors
chemical_list: D005232:Fatty Acids, Volatile
keywords: Lactobacillus plantarum; SCFA; broiler; performance; sIgA