title: Effects of chlorpyrifos and chlorantraniliprole on fermentation quality of alfalfa (Medicago sativa L.) silage inoculated with or without Lactobacillus plantarum LP.
abstract: The effects of pesticides and Lactobacillus plantarum (LP) on fermentation quality of alfalfa (Medicago sativa L.) silage were investigated. Chlorpyrifos and chlorantraniliprole were sprayed on the surface of alfalfa plants at 658.6 and 45.0 g active ingredient/ha, respectively. Alfalfa plants were harvested on day 5 post-application and ensiled with or without LP. Chlorpyrifos and chlorantraniliprole decreased the yeast count of alfalfa material (P < 0.05). Both pesticides increased the butyric acid content of alfalfa silage (P < 0.001). Chlorpyrifos increased pH and decreased lactic acid, acetic acid and short-chain fatty acid contents (P < 0.05). LP decreased pH and butyric acid content, and increased lactic acid and short-chain fatty acid contents of alfalfa silage treated with pesticides (P < 0.05). LP increased the concentration of chlorpyrifos residue in alfalfa silage (P < 0.05). Chlorpyrifos and chlorantraniliprole affected the microbial communities of the material before ensiling, especially coliform bacteria and yeast; the two pesticide residues were reduced after the fermentation of alfalfa silage and affected the fermentation process, whereas LP improved the fermentation quality of pesticides-contaminated alfalfa silage and slowed down the dissipation of chlorpyrifos.
authors.affiliation: College of Animal Science and Technology, China Agricultural University, Beijing, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: College of Animal Science and Technology, China Agricultural University, Beijing, China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Yu
authors.affiliation: College of Animal Science and Technology, China Agricultural University, Beijing, China.
authors.forename: Xianguo
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Ecology and Environment Science, Inner Mongolia Agricultural University, Hohhot, China.
authors.forename: Risu
authors.initials: R
authors.lastname: Na
mesh_terms: D004390:Chlorpyrifos; D005285:Fermentation; D063427:Food Quality; D048191:Lactiplantibacillus plantarum; D000455:Medicago sativa / Q000382:microbiology*; D012820:Silage / Q000382:microbiology*; D062367:ortho-Aminobenzoates
chemical_list: D062367:ortho-Aminobenzoates; C517733:chlorantranilipole; D004390:Chlorpyrifos
keywords: chlorantraniliprole; chlorpyrifos; lactic acid bacteria; residue; silage quality