| Texto completo | |
| Autor(es): |
Sakita, Gabriel Zanuto
[1]
;
Ventoso Bompadre, Thiago Francisco
[1]
;
Dineshkumar, Dhanasekaran
[1]
;
Tavares Lima, Paulo de Mello
[1]
;
Abdalla Filho, Adibe Luiz
[2]
;
Campioni, Tania Sila
[3]
;
de Oliva Neto, Pedro
[3]
;
Bremer Neto, Herman
[4]
;
Louvandini, Helder
[1]
;
Abdalla, Adibe Luiz
[1]
Número total de Autores: 10
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Ctr Energia Nucl Agr, Lab Nutr Anim, Piracicaba, SP - Brazil
[2] Univ Sao Paulo, Ctr Energia Nucl Agr, Lab Ecol Isotop, Av Centenario 303, BR-13400970 Piracicaba, SP - Brazil
[3] Univ Estadual Paulista, Unidade Bioproc, Inst Pesquisa Bioenergia, Assis, SP - Brazil
[4] Univ Oeste Paulista, Lab Biofis, Dept Ciencias Funcionais, Presidente Prudente, SP - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION; v. 104, n. 5 APR 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
During specific times of the year, especially dry seasons, tropical forages typically have poor nutritional value due to high contents of neutral and acid detergent fibres, and low crude protein in their composition, which may reduce productivity of ruminant livestock production and lead to increased enteric methane (CH4) emissions per unit of generated product in forage-bases systems. In order to increase fibre degradability and the efficiency of energy utilisation from low-quality forages, exogenous fibrolytic enzymes have been studied. In this assay, we evaluated the effects of increasing dose levels of fibrolytic enzymes extract (FEE) produced by Trichoderma reesei on in vitro rumen organic matter degradability, fermentation parameters, total gas and CH4 production of tropical forages. Forage samples were analysed for their bromatological composition, and enzyme activity from FEE was performed for xylanase and endoglucanase. The in vitro gas production technique was used in a 5 x 3 factorial arrangement with five FEE dose levels (0, 5, 50, 500 and 5,000 mu l) and three substrates (Cynodon spp., Panicum maximum and Cenchrus ciliaris L.). The highest dose level of FEE increased degradability, total gas and CH4 production in all substrates (p < .05). Butyrate concentration also increased while acetate:propionate ratio and pH decreased with the addition of FEE (p < .05). These results indicated that the use of fibrolytic enzymes can be a reliable strategy to improve degradability of low-quality forages, contributing to the sustainability and intensification of livestock production in tropical countries. (AU) | |
| Processo FAPESP: | 14/24188-1 - Desenvolvimento de bioprocessos para a obtenção de produtos com aplicações potenciais nas indústrias de bioenergia e ração animal a partir de resíduos agroindustriais |
| Beneficiário: | Pedro de Oliva Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOEN - Regular |