Data/hora: 12/06/2024 15:14:16

Provedor de dados: | 89
País: | Brazil
Título: | Influence of Pine Bark Tannin on Bacterial Pathogens Growth and Nitrogen Compounds on Changes in Composted Poultry Litter
Autores: | Arzola-Alavarez,C; Castillo-Castillo,Y; Anderson,RC; Hume,ME; Ruiz-Barrera,O; Min,BR; Arzola-Rubio,A; Beier,RC; Salinas-Chavira,J.
Data: | 2020-01-01
Ano: | 2020
Palavras-chave: | Poultry litter; Condensed tannins; Uric acid; Bacterial pathogens.
Resumo: | ABSTRACT To study the antimicrobial and uric acid-preserving activity of pine bark tannin on poultry litter composting, antibiotic-free wood chip-based poultry litter was distributed (11 g) to 50-mL conical centrifuge tubes and immediately amended with 1.3 mL0.4 M sodium phosphate buffer (control) or with 1.3 mL condensed tannins from pine bark (Pinus palustris; 9 % tannin wt/vol in water). All tubes (n = 3 tubes/treatment) were inoculated with a novobiocin and naladixic acid-resistant Salmo-nella typhimurium (STNN) to achieve 3.0 log10 CFU/g and incubated at 37oC for 3 days to simulate an initial compost period. Wildtype E. coli and the challenge STNN strain as well as concentrations of ammonia, uric acid and urea were measured on days 0 and 3. Pine bark tannin treatment decreased (p&lt;0.01) STNN populations in the litter by 0.6 log units compared to the controls. Wildtype E. coli populations were unaffected by tannin treatment (p&gt;0.05). Ammonia accumulation decreased (p&lt;0.01) 23% in tannin-treated litter compared to the control (2.8 ± 0.1 µmol/g). Conversely, the residual uric acid concentration was 1.6-fold higher (p=0.02) in litter treated with the pine bark tannin than in the control litter. Urea concentrations were unaffected by tannin treatment (p&gt;0.05). Results suggest that pine bark tannin treatment may preserve uric acid and reduce ammonia volatilization in composted litter while aiding Salmonella control.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100305
Editor: | Fundação APINCO de Ciência e Tecnologia Avícolas
Relação: | 10.1590/1806-9061-2018-0911
Formato: | text/html
Fonte: | Brazilian Journal of Poultry Science  v.22 n.1 2020
Fonte: | info:eu-repo/semantics/openAccess