Biochemical, physical and performance evaluation studies were carried
out in order to determine the quality of four commercial growers rations,
(GF, SF, TF and VF) and five commercial layer rations (GF, SF, TF, VF
and LF) manufactured in Nigeria. Percentage moisture content (% MC), Ash
content (% AC), Ether extract (% NFE) and calculated metabolizable energy
(ME) in MJ kg-1 were determined by proximate analysis and compared
with the nutrient values declared on the brand labels. Performance was
investigated using 60, 4-month-of-lay commercial laying birds in a 10-week
experiment. Four treatment diets including three commercial rations (GF,
SF and LF) and a control diet (CF) were fed to 3 replicated groups of
the experimental birds each in a completely randomized design (CRD) experiment.
Percentage MC of TF growers ration (14.75%) and GF layers ration (17.25%)
were significantly (p<0.05) higher than others. Both the analyzed and
declared values of crude protein in both feed types were statistically
similar (p<0.05) for all feed brands. All other parameters showed either
a significantly higher or lower values when comparing the analyzed values
with the declared values of the nutrients in all feed brands. TF and GF
recorded significantly higher ME (MJ kg-1) in growers and layers
rations respectively than the rest. The overall mean weights of feedbags
ranged from 24.66±0.52 kg for GF to 25±0.02 for VF and were
statistically similar to the declared 25 kg/bag of feed by manufacturers.
Average feed intake was significantly (p>0.05) lower in the control
diet (CF). Highest body weight change was recorded in LF and CF while
GF and SF were similar. CF, SF and LF, though statistically similar (p>0.05)
recorded higher percentages of her-day production than GF. LF, CF and
GF on the other hand, recorded significantly higher average egg weight
than SF (p<0.05). SF was the most economical in terms of cost of feed
kg-1 egg and per kg feed. Commercial feed millers seem to more
concerned with the CP% content of their feeds while compromising the quality
of other nutrient components.
M.C. Ucheghu, I.C. Okoli, A.A. Omede, M.N. Opara and C.T. Ezeokeke, 2008. Biochemical, Physical and Performance Evaluations of Some Commercial
Growers and Layers Ration Manufactured in Nigeria. Asian Journal of Poultry Science, 2: 1-9.