In vitro degradation and gas production of brachiaria grass with levels of biodiesel byproducts

Juliana   Marques Freire; Aderbal Marcos   de Azevedo Silva; Heloisa   Carneiro; José Morais    Pereira Filho; Leilson   Bezerra Rocha; Denise Cristiane   Bidler

In vitro degradation and gas production of brachiaria grass with levels of biodiesel byproducts

Autores

Juliana Marques Freire

Aderbal Marcos de Azevedo Silva

Heloisa Carneiro

José Morais Pereira Filho

Leilson Bezerra Rocha

Denise Cristiane Bidler

Editor

Universidade Estadual de Maringá

Descripción

This study aimed to evaluate the in vitro degradability and gas production in diets containing byproducts from the national biodie sel industry (castor bean, canola, fo rage radish and black sunflower) replacing Brachiaria grass in four levels (0, 30, 50 and 70%). The inoculum for in vitro incubation was obtained from three fistulated Holstein cows. The experimental design was 4 x 4 factorial completely randomized experimental design consisting of four by products and four levels. All byproducts studied had a significant effect (p < 0.05) on in vitro digestibility. The castor bean byproducts promot ed the lowest cumulative gas production at the end of 48 hours in cubation. Regarding digestibility, the byproducts of canola and radish at 70% level did not affect the degradability of dry matter.