The objective of this study was to study the effect of YEFECAP (yeast-fermented cassava chip) in
replacing soybean meal (SBM) in concentrate mixtures. Four, early lactating (30±13 day-inmilk)
Holstein Friesian crossbred cows (50×50; HF×Native Thai cattle) were randomly
assigned according to a 4×4 Latin square design to receive 4 dietary treatments (4 replacement
levels of SBM by YEFECAP at 0, 33, 67 and 100% CP in concentrates). Cows were offered
concentrate mixtures according to concentrate:milk ratio at 1:2 Urea (2%)–lime (2%) treated
rice straw was a roughage source and fed ad libitum. Measurements of feed intake and
collection of feeds, feed refusals, feces, rumen fluid, and blood samples were taken. As a result
of this experiment, it was found that, pH values in the rumen were linearly (Pb0.01) increased
when increasing replacement levels of SBM by YEFECAP while ruminal NH3–N concentrations
were not significantly different among treatments (PN0.05). BUN and MUN were linearly
decreased (Pb0.01) when increasing YEFECAP level.
The objective of this study was to study the effect of YEFECAP (yeast-fermented cassava chip) inreplacing soybean meal (SBM) in concentrate mixtures. Four, early lactating (30±13 day-inmilk)Holstein Friesian crossbred cows (50×50; HF×Native Thai cattle) were randomlyassigned according to a 4×4 Latin square design to receive 4 dietary treatments (4 replacementlevels of SBM by YEFECAP at 0, 33, 67 and 100% CP in concentrates). Cows were offeredconcentrate mixtures according to concentrate:milk ratio at 1:2 Urea (2%)–lime (2%) treatedrice straw was a roughage source and fed ad libitum. Measurements of feed intake andcollection of feeds, feed refusals, feces, rumen fluid, and blood samples were taken. As a resultof this experiment, it was found that, pH values in the rumen were linearly (Pb0.01) increasedwhen increasing replacement levels of SBM by YEFECAP while ruminal NH3–N concentrationswere not significantly different among treatments (PN0.05). BUN and MUN were linearlydecreased (Pb0.01) when increasing YEFECAP level.
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