Effect of okara levels on corn grain silage



Título del documento: Effect of okara levels on corn grain silage
Revista: Revista Brasileira de Zootecnia
Base de datos: PERIÓDICA
Número de sistema: 000445519
ISSN: 1516-3598
Autores: 1
2
1
1
3
Instituciones: 1Universidade Estadual de Maringa, Departamento de Zootecnia, Maringa, Parana. Brasil
2Universidade Estadual de Maringa, Maringa, Parana. Brasil
3Universidade de Sao Paulo, Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, Sao Paulo. Brasil
Año:
Volumen: 49
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés We ensiled different levels of okara and ground corn to evaluate the effects on the fermentative pattern, aerobic stability, and chemical composition of resulting silages. The experimental design was completely randomized with four replicates per treatment. The okara levels were (dry matter basis): control (without okara) and 200, 300, 400, and 500 g kg−1 okara, with four replicates per treatment. Control silage did not contain okara, but water was added to adjust the moisture content (400 g kg−1 as fed). Mixtures were ensiled in lab-scale silos and stored for 150 days. Compared with the control silage, okara inclusion linearly increased crude protein (from 89.1 to 251 g kg−1 DM), ether extract (from 39.6 to 136 g kg−1 DM), neutral detergent fiber (from 79.9 to 174 g kg−1 DM), acid detergent fiber (from 22.4 to 119 g kg−1 DM), and ash (from 12.2 to 32.4 g kg−1 DM), whereas decreased dry matter content and in vitro dry matter digestibility (from 830 to 730 g kg−1 DM). The use of okara linearly increased lactic acid concentration but also intensified secondary fermentation. On the other hand, aerobic stability of silages increased due to okara inclusion because of the higher amount of short-chain fatty acids, such as butyric and acetic acids, which accumulated during fermentation. Okara inclusion in corn grain silage must be conditioned to the dry matter content at ensiling, but must not exceed 200 g kg−1 on dry matter basis
Disciplinas: Agrociencias,
Química
Palabras clave: Gramíneas,
Leguminosas,
Fermentaciones,
Maíz,
Ensilado,
Amonio,
Nitrógeno,
Acido butírico,
Digestibilidad,
Soya,
Brasil
Keyword: Gramineae,
Legumes,
Fermentation,
Corn,
Silage,
Ammonia,
Nitrogen,
Butyric acid,
Digestibility,
Soybean,
Brazil
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