Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
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TY - JOUR
T1 - Fermented liquid feed - Feed processing has a big impact on microbial degradation of free lysine during fermentation
AU - Canibe, Nuria
AU - Jensen, Bent Borg
PY - 2010
Y1 - 2010
N2 - In order to investigate the influence of feed processing on the microbial degradation of free lysine during fermentation of liquid feed, a study at laboratory scale was carried out. Based on a standard Danish grower diet with extra free amino acids added, two treatments were prepared: treatment 1) pelleted (83 °C) diet; treatment 2) mash, non-heated diet. The feed was mixed with water (1:2.75, w/w) and incubated at 25 °C. The number of Enterobacteriaceae was higher in liquid feed prepared with the mash than with the pelleted feed immediately after feed and water were added to the mixture but after a few hours of fermentation, the levels in both treatments became similar. The concentration of acetic acid was higher in the mixture containing the mash feed than in that containing the pelleted feed. The disappearance of free lysine was much higher when mash feed was fermented than when the same pelleted feed was used. This was specially observed in a more established FLF (after backslopping had been practiced for several days). In conclusion, the data showed that free lysine was degraded to a high extent when fermenting non-pelleted-non-heated feed, whereas a limited degradation occurred during fermentation of pelleted-heated feed
AB - In order to investigate the influence of feed processing on the microbial degradation of free lysine during fermentation of liquid feed, a study at laboratory scale was carried out. Based on a standard Danish grower diet with extra free amino acids added, two treatments were prepared: treatment 1) pelleted (83 °C) diet; treatment 2) mash, non-heated diet. The feed was mixed with water (1:2.75, w/w) and incubated at 25 °C. The number of Enterobacteriaceae was higher in liquid feed prepared with the mash than with the pelleted feed immediately after feed and water were added to the mixture but after a few hours of fermentation, the levels in both treatments became similar. The concentration of acetic acid was higher in the mixture containing the mash feed than in that containing the pelleted feed. The disappearance of free lysine was much higher when mash feed was fermented than when the same pelleted feed was used. This was specially observed in a more established FLF (after backslopping had been practiced for several days). In conclusion, the data showed that free lysine was degraded to a high extent when fermenting non-pelleted-non-heated feed, whereas a limited degradation occurred during fermentation of pelleted-heated feed
KW - feed processing
KW - fermentation
KW - liquid feed
KW - lysine
U2 - 10.1016/j.livsci.2010.06.041
DO - 10.1016/j.livsci.2010.06.041
M3 - Journal article
VL - 133
SP - 120
EP - 123
JO - Livestock Science
JF - Livestock Science
SN - 1871-1413
IS - 1-3
ER -