Chemical characteristics of beddings for swine: Effects of bedding depths and of addition of inoculums in a pilot-scale

• Published in: Bioresource technology 2012-11, Vol.123, p.62-65
• Main Authors: Corrêa, É.K., Corezzolla, J.L., Corrêa, M.N., Bianchi, I., Gil-Turnes, C., Lucia, T.
• Format: Article
• Language: English
• Subjects: Agronomic value; Animals; Bacillus - growth & development; Bedding and Linens; Carbon - analysis; Chemical content; Deep bedding; Housing, Animal; Hydrogen-Ion Concentration; Inoculums; Manure - analysis; Oryza - chemistry; Pilot Projects; Potassium - analysis; Sus scrofa; Swine
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2012.07.071

► The chemical content of rice husk beddings with depths of 0.25m and 0.50m was evaluated in two repeats. ► Inoculums were added to the bedding: Bacillus cereus var. toyoii; a pool of Bacillus subtilis, Bacillus licheniformis and Bacillus polymyxa; in comparison with a control treatment with no inoculums. ► The inoculums did not affect the beddings chemical content. ► Agronomic value was better for the 0.25m deep bedding and for beddings from the second repeat. The effect of depths and of addition of inoculums on the chemical content of swine beddings was evaluated. For beddings 0.25m (25D) and 0.50m (50D) deep, three treatments were tested in two repeats with the same beddings: control (no inoculums); T1 (250g of Bacillus cereus var. toyoii at 8.4×107CFU/g); and T2 (250g of a pool of Bacillus sp. at 8.4×107CFU/g) (250g for 25D and 500g for 50D). For 25D, the C:N ratio was lower, but N, K and C contents were greater than for 50D (P0.05). In the second repeat, beddings presented lower C:N ratio and greater N, P and K contents than in the first repeat (P