Chemical composition and fermentation characteristics of elephant grass silage with biodiesel industry co-products

Ciência Rural

Eric Haydt Castello Branco Van Cleef²  José Cleto Da Silva Filho¹  Arnaldo Prata Neiva Júnior¹  René Maurício Patiño Pardo¹  Aníbal Coutinho Do Rêgo²  Josemir De Souza Gonçalves¹ 

[1] ,Universidade Estadual Paulista “Julio de Mesquita Filho”, (UNESP) Departamento de Zootecnia Jaboticabal SP ,Brasil

关键词: ensilage;    in vitro digestibility;    Jatropha curcas;    Pennisetum purpureum;    Raphanus sativus;    digestibilidade in vitro;    ensilagem;    Jatropha curcas;    Pennisetum purpureum;    Raphanus sativus;   

DOI  :  10.1590/S0103-84782012000400024

来源: SciELO

【 摘 要 】

The objective of this research was to evaluate the effect of three concentrations (3, 6, and 9%) of forage turnip (Raphanus sativus) and physic nut (Jatropha curcas) cakes on dry matter, crude protein, ether extract, neutral detergent fiber, acid detergent fiber, lignin, acid detergent insoluble nitrogen neutral detergent insoluble nitrogen contents, in vitro dry matter digestibility, pH values and concentrations of N-NH3 in elephant grass silages. It was used an entirely randomized design in factorial arrangement [(2×3)+1]. Experimental PVC silos were used and ensiled material was kept for 62 days. The addition of cakes increased the dry matter contents (P<0.05). The fibrous fractions were reduced (P<0.05) with the inclusion of cakes during the grass ensilage and the CP contents increased (P<0.05). The forage turnip cake provided the same pH and N-NH3 values in ideal levels and the physic nut, added to 9%, increased those values (P<0.05). IVDMD was reduced (P<0.05) when the cakes were added. These co-products can be used in small amounts for elephant grass ensilage in order to provide improvement in chemical and fermentation characteristics of the silages. Nevertheless, physic nut cake shows limitations for its use in animal feeding due to the presence of toxic compounds, making necessary studies for their identification and elimination.

【 授权许可】

CC BY   
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