SHORT COMMUNICATION
Effect of processing dejuiced sweet sorghum
residues on ruminal fermentation characteristics
in vitro
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1
College of Animal Science and Technology and Beef Cattle Research Centre,
China Agricultural University,
Beijing 100094, P.R. China
2
Nonghua Economy and Trade Company,
Beijing 100026, P.R. China
Publication date: 2007-09-17
Corresponding author
Q. X. Meng
College of Animal Science and Technology and Beef Cattle Research Centre,
China Agricultural University,
Beijing 100094, P.R. China
J. Anim. Feed Sci. 2007;16(Suppl. 2):31-36
KEYWORDS
ABSTRACT
The objective of this study was to examine the effect of processing dejuiced sweet sorghum
residues on ruminal fermentation characteristics in vitro. Dejuiced sweet sorghum residues (DSSR)
were subjected to three treatments: 1. direct ensilage (E), 2. ensilage of distillers after distillation
of DSSR (ED), and 3. drying distillers after distillation of DSSR (DD). After fermentation, E and
ED treatments both had perfect silage fermentation characteristics. Among the three treatments, E
had the highest gas production, in vitro DM and NDF digestibilities, followed by ED and DD. The
treatment had no significant effect (P>0.05) on in vitro NDF digestibility, the concentration of NH3-N,
total VFA, and individual VFA molar proportions, except for the molar proportions of acetic acid
and butyric acid (P<0.01). The results indicate that treatment of dejuiced sweet sorghum residues
with directly ensiling or ensiling distillers DSSR can improve their nutritive value.