title: Addition of Bacillus sp. inoculums in bedding for swine on a pilot scale: effect on microbial population and bedding temperature.
abstract: Thermal and microbiological characteristics of beddings for swine were compared according to their depth and of addition of inoculums. Bedding was added to boxes at 0.25 (25D) and 0.50 m (50D), with three treatments: control (no inoculums); T1, with 250 g of Bacillus cereus var. toyoii at 8.4 × 10(7) CFU; and T2, with 250 g of a pool of B. subtilis, Bacillus licheniformis and Bacillus polymyxa at 8.4 × 10(7) CFU (250 g for 25D and 500 g for 50D). Mean temperatures were 28.5 ± 3.9 at the surface and 35.2 ± 8.9 inside the beddings. The most probable number (MPN) of thermophilic bacteria was higher for T1 and T2 than for the control (P<0.05). The MPN of thermophilic bacteria and fungi was greater for D50 than for D25 (P<0.05). The use of 25D without inoculums is recommended due to the reduction of thermophilic microbiota.
authors.affiliation: Centro de Biotecnologia, Campus Universitário Capão do Leão, CEP 96010-900, Pelotas, RS, Brazil.
authors.forename: E K
authors.initials: EK
authors.lastname: Corrêa
authors.forename: R R
authors.initials: RR
authors.lastname: Ulguim
authors.forename: L B
authors.initials: LB
authors.lastname: Corrêa
authors.forename: D D
authors.initials: DD
authors.lastname: Castilhos
authors.forename: I
authors.initials: I
authors.lastname: Bianchi
authors.forename: C
authors.initials: C
authors.lastname: Gil-Turnes
authors.forename: T
authors.initials: T
authors.lastname: Lucia
mesh_terms: D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D001407:Bacillus; D001512:Bedding and Linens / Q000382:microbiology* / Q000662:veterinary*; D001938:Brazil; D005260:Female; D008372:Manure / Q000382:microbiology*; D013045:Species Specificity; D013552:Swine; D013696:Temperature
chemical_list: D008372:Manure