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One hundred and sixty (160) one day old Ross 355 broiler
chicks were used in an experiment to determine the effects of supplementing
brewer`s dried grain with Levucel SB yeast. Four experimental diets were
used. Diet 1 which served as control had 0.0 mg kg-1 dietary
inclusion level of yeast. Diets 2, 3 and 4 which had higher level of brewer`s
dried grain were supplemented with 200, 250 and 300 mg of yeast per kg
of diet respectively. Feed and water were supplied ad libitum.
The experiment lasted for four weeks. Results at the end of the experiment
showed that, feed intakes were not significantly affected by yeast supplementation.
However, live weight gains and feed conversion ratios of broilers fed
diets with yeast supplementation were significantly improved (p<0.05).
Cost of feeding to 4 weeks of age was also significantly reduced for these
groups of broilers (p<0.05). Dietary yeast supplementation did not
affect broiler livability. Results of nutrient retention trial showed
that while protein and fat retentions were comparable among broilers in
all groups whereas fibre retention was significantly increased by yeast
supplementation (p<0.05). It was concluded that, Levucel SB yeast fed
at either 250 or 300 mg kg-1 to supplement 26% inclusion of
brewer`s dried grain in broiler starter diet could enhance body weight
gain, feed conversion and fibre retention. In addition, such supplementation
could also result in lowering cost of feeding.
