International Journal of Aquaculture, 2015, Vol.5, No.30 1
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Specific growth rate (SGR) ranged from 2.02 in control
diet to 1.98 in Diet 4, Weight gain ranged from 6.30
(Control) to 6.18 (diet 4), while final weight ranged
from 9.29 (Control) to 9.23 (diet 4) PER range from
1.06 in Diet 2 to 0.98 recorded in the control diet.
Survival was between 67.5% (Diet 3) and 75.0%
(recorded in diet 1 and control diet). However, FCR
was significantly higher in Diet 4 and control diet (2.20)
compared to other experimental diets while Diet 2 had
higher value of Apparent net protein utilization (0.49)
compared to other diets and the control diet. Result of
the pattern of weekly growth of African catfish fed
KPH based diet is shown in Figure 1, which reveals
growth for Treatment 1, 3, 4 and the control diet to
overlap through the weeks, however, treatment 2 was
slightly below them. Proximate composition of Carcass
of fish fed KPH based diet is shown in Table 3. Result
obtained reveals that the experimental diets had
significantly higher values for most proximate
component compared to the values obtained for the
initial analyzed carcass before the feeding trial. Diet 1
was observed higher in Ash, Lipid, and protein values
and these values generally decreased as the level of
inclusion level of KPH
Table 1 Proximate Composition of Diet with Kola Pod Husk replacing Maize meal
KPH
Diet 1
Diet 2
Diet 3
Diet 4
Diet 5
Moisture
9.38±0.01
b
8.22±0.00
d
9.16±0.01
c
9.14±0.01
c
9.21±0.01
b
9.44±0.01
a
Ash
11.48±0.00
a
8.42±0.01
e
12.87±0.00
d
13.14±0.01
c
13.21±0.01
b
13.48±0.01
a
Lipid
1.36±0.01
a
6.01±0.00
a
3.32±0.01
d
4.42±0.00
c
4.41±0.01
c
4.87±0.01
b
Fibre
16.38±0.00
a
6.21±0.01
c
9.12±0.00
b
9.16±0.01
b
9.26±0.01
a
9.27±0.01
a
Protein
28.05±0.05
a
41.81±0.01
e
44.00±0.00
d
46.19±0.01
c
48.38±0.00
b
50.57±0.01
a
CHO
30.03±0.05
e
27.14±0.01
a
23.61±0.02
b
22.31±0.00
c
20.80±0.02
d
20.43±0.02
e
Means in the same row with different superscripts differ significantly (p<0.05)
Keys: Diet 1= KPH 00:MM 100
Diet 2=KPH 25: MM 75
Diet 3=KPH 50: MM 50
Diet 4=KPH 75: MM 25
Diet 5=KPH 100: MM 00
Table 2 Growth performance of African Catfish juveniles fed diets containing Kola Pod Husk replacing maize meal
Parameters (±S.E)
Diet 1
Diet 2
Diet 3
Diet 4
Diet 5
Initial Wt (g)
2.99±0.01
3.06±0.06
2.85±0.05
3.01±0.03
3.05±0.01
Final Wt. (g)
9.29±0.04
9.41±0.35
8.89±0.48
9.59±0.08
9.23±0.02
Wt. Gain (g)
6.30±0.03
6.35±0.29
6.04±0.43
6.58±0.11
6.18±0.01
SGR (%.day
-1
)
2.02±0.00
2.00±0.03
2.03±0.06
2.07±0.03
1.98±0.00
FCR
2.18±0.00
a
2.03±0.03
b
2.06±0.07
ab
2.02±0.06
b
2.20±0.00
a
PER
0.98±0.00
1.02±0.01
1.06±0.03
1.03±0.03
0.99±0.00
ANPU
0.41±0.00
cd
0.47±0.01
ab
0.49±0.02
a
0.39±0.00
d
0.44±0.00
bc
% Survival
75.00±0.00
75.00±5.00
70.00±5.00
67.50±2.50
72.50±2.50
Means in the same row with different superscripts differ significantly (p<0.05)
Keys: Diet 1= KPH 00:MM 100
Diet 2=KPH 25: MM 75
Diet 3=KPH 50: MM 50
Diet 4=KPH 75: MM 25
Diet 5=KPH 100: MM 00
