RESULT
4.1 Growth performance
The result of
the growth characteristics of snails fed diets supplemented with Mulberry leaf meal
(MBLM) and chromoleana odorata (siam weed) leaf meal (SWLM) is
presented in Table 4.
Table 7: Growth characteristics of snails fed
diets supplemented with mulberry leaf meal (MBLM) and siam weed leaf meal
(SWLM)
Parameters (g)
|
T1 (0%)
|
T2 (5% MBLM)
|
T3 (5% SWLM)
|
SEM
|
Initial body weight
|
45.97
|
46.01
|
45.78
|
0.07
|
Final
bodyweight
|
160.10b
|
160.52b
|
166.38a
|
2.03
|
Body weight gain
|
114.14b
|
114.52b
|
120.60a
|
2.09
|
Weekly weight gain
|
14.27b
|
14.32b
|
15,08a
|
0.26
|
Daily weight gain
|
2.04a
|
2.05a
|
1.95b
|
0.03
|
Total
feed intake
|
252.88b
|
254.93ab
|
257.98a
|
1.48
|
Weekly feed intake
|
31.62b
|
31.37b
|
32.25a
|
0.26
|
Daily feed intake
|
4.52ab
|
4.45a
|
4.61a
|
0.05
|
Feed conversion ration
|
2.22a
|
2.23a
|
2.14b
|
0.03
|
a, b, c: Means with the same
superscript in the same row are significantly different (P <0.05).
·
MBLM
– Mulberry leaf meal
·
SWLM
– Saim weed leaf meal
·
SEM
– Standard error of the treatment mean
There was no
significant effect in the initial body weight. Significant difference were
recorded in their final body weight, body weight gain, total feed intake and
feed conversion ratio.
CHAPER FIVE
DISCUSSION
The result
presented in table 4 above showed significant (P<0.05 )
difference in all the parameters.
Information on the growth rate of this species
(Archachatina maginata) is scarce in literature, especially with the use of
diets supplemented with Mullbery and Siam weed leaf meals.
This
result differs completely from that of Imran et al. (2011) who reported
no significant difference between Mulberry leaf meal (MBLM) and siam weed leaf meal (SWLM) when fed to
growing snails. The values for the body
weight gain T1 (114.14), T2 (114.52) and T3 (120.60) actually favoured T3
(SWLM) followed by T2 (MBLM) these results however differ with the earlier
report of Omole, (2000) who reported daily weight gain of 0.49, the body weight
gain of the animals is similar to that reported by Ejidike, (2000). This
inconsistency in body weight gain could be attributed to hydration stage,
stuntiness and shell heaviness as reported by Stievenart (1992). High
voluntary intake of diet T3 (5% SWLM) by the snail could be attributed to the
palatability of the foliage to all species of animals as reported by Samkol,
(2003). The level of feed intake
recorded in snails feed diet T3 (5% SWLM) is similar to that reported by Imaran
et al., (2001).
High
level of feed conversion was
recorded in snails fed T2 diet (5% MBLM) and this could be as a result of
excellent nutritional value
and organic matter digestibility of Mulberry
leaf meal as reported
by Omar et al., (1999). This can also be
attributed to high crude protein content of 22.5% and palatability of Mulberry
leaf meal (Okon and Amalu, 2003).
The
optimal performance of the snails used
in this study could be attributed
to higher response to light which
agrees with (Akinnusi, 2002) who
reported that a continuous exposure of snails to light
increases their rate of feed consumption.
Conclusion
and Recommendation
Since the two leaf meals used in this
experiment performed better than the control diet, it can therefore be
concluded that mulberry and saim-weed leaf meals are very rich nutritionally to
act as a good substitutes for replacing soybean meal in the diet of young
snails. And also, the high nutrient value of these leaf meals and their
palatability make them acceptable to all species of animals.
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APPENDIX I
INITIAL LIVE
WEIGHT (G)
|
T1 (counted)
|
T2(Mulberry)
|
T3 (saim)
|
|
R1
|
45.83
|
45.00
|
45.49
|
|
R2
|
46.00
|
46.83
|
45.93
|
|
R3
|
44.80
|
47.00
|
44.50
|
|
R4
|
46.30
|
44.30
|
46.00
|
|
R5
|
46.90
|
46.90
|
47.00
|
|
∑x
|
2229.83
|
230.03
|
228.92
|
688.78
|
X
|
45.77
|
46.01
|
45.78
|
137.7
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= (688.78)2
5 x 3
= 474417.8884
15
= 31627.859
Total ss = ∑rtij=1 X2i - CFM
= 45.832 +…..+45.002+
….+47.002 -31627.859
= 31640.0328 – 31627.859
= 12.174
Trt ss = ∑ti=1 X2i - CFM
r
= 229.832+ 230.032228.922
– 31627.859
5
= 158139.9962 – 31627.859
5
= 31627.9992 – 31627.859
= 0.1402
Error s.s = total ss –
trt ss
= 12.174 – 0.1402
= 12.03
Anova table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
0.1402
|
0.0701
|
0.070ns
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
12.03
|
1.0025
|
|
|
|
Total (Tr-1)
|
14
|
12.174
|
|
|
|
|
Not
significant ( p> 0.05)
SEM = Sx
n
= 0.123
3
= 0.07
SEM-Standard error of the mean
Sx = Sx2
Sx2 = ∑x2 – (∑x)2/n
n-1
= 6325.9694 – (137.76)2/3
3 -1
Sx2 = 0.0151
Sx = 0.0151
= 0.123
APPENDIX II
INITIAL LIVE WEIGHT (G)
|
T1 (counted)
|
T2(Mulberry)
|
T3(siam weed)
|
|
R1
|
160.67
|
161.00
|
165.49
|
|
R2
|
161.00
|
163.83
|
164.93
|
|
R3
|
159.09
|
161.00
|
164.50
|
|
R4
|
159.30
|
158.59
|
167.00
|
|
R5
|
160.46
|
158.20
|
170.00
|
|
∑x
|
800.52
|
802.62
|
831.92
|
2435.06
|
X
|
160.10
|
160.52
|
166.38
|
487.00
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= (2435.062
5 x 3
= 5929517.204
15
= 395301.1469
Total ss = ∑rtij=1 X2i - CFM
= 160.692 +…..+161.002+
….+170.002 -395301.1469
= 395467.7706 – 395301.1469
= 166.624
Trt ss = ∑ti=1 X2i - CFM
r
= 800.522+ 802.622+831.922
– 395301.1469
5
= 1977122.021 – 395301.1469
5
= 395424.4042 – 395301.1469
= 123.257
Error s.s = total ss –
trt ss
= 166.624 – 123.257
= 43.367
Anova table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
0.1402
|
0.0701
|
0.070ns
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
12.03
|
1.0025
|
|
|
|
Total (Tr-1)
|
14
|
12.174
|
|
|
|
|
Not
significant ( p> 0.05)
SEM = Sx
n
= 0.123
3
= 0.07
SEM-Standard error of the mean
Sx = Sx2
Sx2 = ∑x2 – (∑x)2/n
n-1
= 6325.9694 – (137.76)2/3
3 -1
Sx2 = 0.0151
Sx = 0.0151
= 0.123
APPENDIX III
BODY WEIGHT GAIN
(G)
|
T1 (control)
|
T2(Mulberry)
|
T3(saim weed)
|
|
R1
|
114.84
|
116.00
|
120.00
|
|
R2
|
115.00
|
117.00
|
119.00
|
|
R3
|
114.29
|
114.00
|
120.00
|
|
R4
|
113.00
|
114.29
|
121.00
|
|
R5
|
113.56
|
113.30
|
123.00
|
|
∑x
|
570.69
|
572.59
|
603.00
|
1746.28
|
X
|
114.14
|
114.52
|
120.60
|
349.26
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= (1746.28)2
5 x 3
= 3049493.838
15
= 203299.589
Total ss = ∑rtij=1 X2i - CFM
= 114.842 +…..+116.002+
….+123.002 -203299.589
= 203462.1974 – 203299.589
= 162.608
Trt ss = ∑ti=1 X2i - CFM
r
= 870.692+ 572.592 +603.002
– 203299.589
5
= 203431.0768 – 203299.589
5
= 203431.0768 – 203299.589
= 131.488
Error s.s = total ss –
trt ss
= 162.608 – 131.488
= 31.120
Anova table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
131.488
|
65.744
|
25.38**
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
31.120
|
2.59
|
|
|
|
Total (Tr-1)
|
14
|
162.608
|
|
|
|
|
Highly
significant ( p> 0.01)
F-LSD 12 = t x Sd
= 3.055 x 2 x 2.59
5
= 3.055 x 1.036
= 3.055 x 1.018
= 3.11
T = 3.055
Sd =
2S2
r
r2 = 2.59
r = 5
|
114.14
|
114.52
|
120.60
|
120.60
|
6.46*
|
6.08*
|
0
|
114.52
|
0.38ns
|
0
|
|
114.14
|
0
|
|
|
T3 T2 T1
120.60 114.52 114.14
a b b
T3 T2 T1
120.60a 114.52 b 114.14 b
There are significant difference between
T3 & T2
T3 & T1
No significant difference between
T2 & T1
SEM = Sx
N
= 3.62497
3
= 2.09
APPENDIX IV
AVERAGE WEEKLY
WEIGHT GAIN (G)
|
T1 (control)
|
T2(Mulbery)
|
T3 (saim weed)
|
|
R1
|
14.36
|
14.50
|
15.00
|
|
R2
|
14.38
|
14.63
|
14.88
|
|
R3
|
14.29
|
14.25
|
15.00
|
|
R4
|
14.13
|
14.29
|
15.13
|
|
R5
|
14.20
|
13.91
|
15.38
|
|
∑x
|
71.36
|
71.58
|
75.39
|
218.33
|
X
|
14.27
|
14.32
|
15.08
|
43.67
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= (218.33)2
5 x 3
= 47667.9889
15
= 3177.86593
Total ss = ∑rtij=1 X2i - CFM
= 14.362 +…..+14.502+
….+15.382 -3177.86593
= 3180.4123 – 3177.86593
= 2.546
Trt ss = ∑ti=1 X2i - CFM
r
= 71.362+ 71.582 +75.392
– 3177.86593
5
= 15899.5981 – 3177.86593
5
= 3179.91962 – 3177.86593
= 2.0537
Error s.s = total ss –
trt ss
= 2.546 – 2.054
= 0.492
Anova table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
2.054
|
1.027
|
25.05**
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
0.492
|
0.041
|
|
|
|
Total (Tr-1)
|
14
|
2.546
|
|
|
|
|
Highly
significant ( p> 0.01)
Mean separation using FLSD
F-LSD 12 = t x Sd
= 3.055 x 2
x 0.041
5
= 3.055 x 0.0164
= 3.055 x 0.1281
= 0.391
T = 3.055
Sd =
2S2
r
S2 = 0.041
r = 5
|
14.27
|
14.32
|
15.08
|
15.08
|
0.81*
|
0.76*
|
0
|
14.32
|
0.05ns
|
0
|
|
14.27
|
0
|
|
|
T3 T2 T1
15.08 14.32 14.27
b a a
There are significant difference between
treatment 1 and treatment 2
APPENDIX VI
TOTAL FEED INTAKE (G)
|
T1 (control)
|
T2(Mulbery)
|
T3 (saim weed)
|
|
R1
|
253.00
|
255.55
|
257.91
|
|
R2
|
254.00
|
253.48
|
259.00
|
|
R3
|
250.91
|
254.00
|
255.00
|
|
R4
|
256.61
|
256.93
|
260.01
|
|
R5
|
249.90
|
255.20
|
258.00
|
|
∑x
|
1264.42
|
1274.66
|
1289.92
|
3829
|
X
|
252.58
|
254.93
|
|
3829
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= 3829
5
x 3
= 977416.6667
Total ss = ∑rtij=1 X2i - CFM
= 2532 +…..+255.052+
….+2582 -977416.6667
= 977530.9762 – 977416.6667
= 114.9095
Trt ss = ∑ti=1 X2i - CFM
r
= 1264.422+ 1274.662 +1289.922
– 977416.6667
5
= 4887409.658 – 977416.6667
5
= 977481.9317 – 977416.6667
= 065.865
Error s.s = total ss –
trt ss
= 114.9095 – 65.865
= 49.045
Anova table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
65.865
|
32.933
|
8.058**
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
49.045
|
4.087
|
|
|
|
Total (Tr-1)
|
14
|
114.9095
|
|
|
|
|
highly significant ( p> 0.05) mean
separation using F-Lsd
F-LSD 12 = t x
Sd
= 3.055 x 2 x 4.089
5
= 3.055 x 1.6348
= 3.055 x 1.2786
= 3.91
T = 3.055
Sd =
2S2
R
S2 = 4.087
r = 5
|
252.88
|
254.93
|
257.98
|
257.98
|
5.10*
|
3.05ns
|
0
|
254.93
|
2.05ns
|
0
|
|
252.88
|
0
|
|
|
T3
|
T2
|
T1
|
257.98
|
254.93
|
252.88
|
A
|
A
|
B
|
|
B
|
B
|
|
T1
|
|
252.88b
T3
|
T2
|
257.98a
|
254.93 b
|
No significance difference between T3
& T2 and T2 & T1
Significant difference between T3
& T1
T3 T2 T1
257.98a 254.93 ab 252.88 b
There are significant difference between
the treatment means.
APPENDIX VII
AVERAGE WEEKLY
FEED INTAKE (G)
|
T1 (control)
|
T2(Mulbery)
|
T3 (saim weed)
|
|
R1
|
31.63
|
31.88
|
32.24
|
|
R2
|
31.75
|
31.65
|
32.38
|
|
R3
|
31.36
|
30.50
|
31.88
|
|
R4
|
32.11
|
30.87
|
32.50
|
|
R5
|
31.24
|
31.90
|
32.25
|
|
∑x
|
158.09
|
156.84
|
161.25
|
476.18
|
X
|
31.62
|
31.37
|
32.25
|
95.24
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= (476.18)2
5 x 3
= 226747.3924
15
= 15116.493
Total ss = ∑rtij=1 X2i - CFM
= 31.632 +…..+31.882+
….+32.252 - 15116.493
= 15120.895 – 15116.493
= 4.402
Trt ss = ∑ti=1 X2i - CFM
r
= 158.092+
156.842 +161.252 – 15116.493
5
= 75592.7962 – 15116.493
5
= 15118.55924 – 15116.493
= 2.066
Error s.s = total ss –
trt ss
= 4.402 – 2.066
= 2.34
Anova table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
2.066
|
1.033
|
5.297**
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
2.34
|
0.195
|
|
|
|
Total (Tr-1)
|
14
|
4.402
|
|
|
|
|
highly
significant ( p> 0.05)
mean separation using F-Lsd
F-LSD 12 = t x Sd
= 2.179 x 2 x 0.195
5
= 2.179 x 0.078
= 2.179 x 0.2793
= 0.609
T = 2.179
Sd =
2S2
r
S2 = 0.195
r = 5
32.25
|
31.37
|
31.62
|
32.25
|
31.62
|
0.88*
|
0.63*
|
0
|
31.37
|
0.25ns
|
0
|
|
|
0
|
|
|
32.25
|
31.62
|
31.37
|
a
|
A
|
b
|
|
B
|
b
|
|
|
|
APPENDIX IX
FEED
CONSERVATION RATIO (FCR)
|
T1 (control)
|
T2(Mulbery)
|
T3 (saim weed)
|
|
R1
|
2.203
|
2.199
|
2.149
|
|
R2
|
2.209
|
2.166
|
2.176
|
|
R3
|
2.195
|
2.228
|
2.125
|
|
R4
|
2.271
|
2.248
|
2.149
|
|
R5
|
2.201
|
2.293
|
2.098
|
|
∑x
|
11.079
|
11.134
|
10.697
|
32.91
|
X
|
2.216
|
2.227
|
2.139
|
|
CFM = (∑rtij Xij)2 r = 5
rt t
= 3
= (32.91)2
5 x 3
= 1083.0681
15
= 72.205
Total ss = ∑rtij=1 X2i - CFM
= 2.2032 +…..+2.1992+
….+2.0982 - 72.205
= 72.2439 – 72.205
= 0.0389
Trt ss = ∑ti=1 X2i - CFM
r
= 11.0792+ 11.1342 +10.6972
– 72.205
5
= 72.227201 – 72.205
5
= 72.227201 – 72.205
= 0.0222
Error s.s = total ss –
trt ss
= 0.0389 – 0.0222
= 0.0167
Anova
table
Source
|
d.f
|
Ss
|
m.s
|
f-cal
|
f-tab
5%
|
1%
|
Trt
(t-1)
|
2
|
0.022
|
0.0110
|
7.75*
|
3.88
|
6.93
|
Error
t(r-1)
|
12
|
0.017
|
0.00142
|
|
|
|
Total (Tr-1)
|
14
|
0.039
|
|
|
|
|
Significant ( p> 0.05)
Mean separation using F-Lsd
F-LSD 12 = t x Sd
= 2.179 x 2 x 0.0014
5
= 2.179 x 0.00056
= 2.179 x 0.0237
= 0.0516
T = 2.179
Sd =
2S2
r
S2 = 0.0014
r = 3
|
2.139
|
2.216
|
2.227
|
2.227
|
0.088*
|
0.011ns
|
0
|
2.216
|
0.077*
|
0
|
|
2.139
|
0
|
|
|
T3
|
T2
|
T1
|
2.227a
|
2.216b
|
2.139b
|
|
T1
|
T2
|
No significance difference between T2
& T1
there T3 Significant
difference from T2 and T1
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