N. C.
DAS
GUPTA
127
Rate of growth. The summary of results of
statistical analysis for the rate of growth is given
in Table VI. It is observed that the rate of growth
with til cake is significantly lower than that with
linseed cake or guar. The fall in the rate of growth
from linseed cake to til cake is 25.49 per cent and
from guar to til cake 43.18 per cent. Guar has
produced the highest rate of growth and the fall
in the rate of growth from guar to linseed cake is
17.69 per cent, but it is not significant being less
than the critical difference of 24.59 per cent.
TABLE VI
Summary of results for rate of growth
Feeds
Average increase per
week (lb.)
Percentage of the
mean.
Linseed
cake
6.85
102.70
Til
cake
5.15
77.21
Guar
8.03
120.39
Mean
6.67
100.00
Critical
differ-
ence at
5 per
cent
1.64
24.59
COMPARATIVE RATE OF GROWTH WITH THE DIFFER-
--- CONCENTRATES
Striking differences in the average growth rates
due to the different treatments can be seen when
the experimental data are plotted on the graph
(Fig. 1). The curves for groundnut cakes, both
decorticated and undecorticated, rape cake and
til cake are less steeply inclined than those with
linseed cake. Better rates of growth are to be
found with arhar chuni, gram, mung chuni and
guar. These findings are substantially confirmed
by the statistical analysis. The data obtained
during the three years of experiment have been
analysed to study the comparative feeding value
of the concentrates. The summary of the results
is shown in Table VII.
The differences in the rates of growth obtained
with linseed cake during the three experiments
are not significant yet they are not the same which
may be due to seasonal variations or other factors
during the three different years. It is observed
from Table VII that the average rates of growth
with undecorticated and decorticated groundnut
cakes are not significantly different from that with
til cake but are significantly lower than that with
the remaining concentrates. The growth rate
with til cake is not significantly different from that
with rape cake, but is lower than those with lin-
seed cake, guar, gram, arhar chuni and mung
chuni. The growth with rape cake is not signi-
ficantly lower than that with linseed cake, but is
lower than the figures obtained for guar, gram,
arhar chuni and mung chuni. The rate of growth
with linseed cakes is not significantly different
from that with guar, but is lower than those with
gram, arhar chuni and mung chuni. The differences
obtained among guar, gram, arhar chuni and mung
chuni are not significant. The results can be
symbolically represented as follows:
Groundnut cake (undecorticated) . .
Groundnut cake (decorticated) . . .
Til
cake . . . . . . . . . . . .
Rape cake
.
.
.
.
.
. . . . .
Linseed cake (1942)
.
.
.
.
.
.
Linseed cake (1941) . . . . . .
Linseed cake (1940)
.
.
.
.
.
.
Guar
.
.
.
.
.
.
.
Gram
.
.
.
.
.
.
.
Arhar chuni
.
.
.
.
.
.
Mung chuni
.
.
.
.
.
.
4.58
4.96
5.15
6.30
6.83
6.87
7.13
8.03
8.77
8.79
8.83
The variations observed in the growth rate may
be due to higher consumption, better digestibility
of the total ration on account of the presence of
certain concentrates or superior value of the
nutrients of some concentrates.
Consumption of total ration as influenced by the
different concentrates. The average consumption
per animal per day in all the treatments and the
intake per 100 lb. of liveweight have been tabulated
in Table VIII. The average composition of the
feeds during the experiment is given in Table IX.
TABLE VII
Summary of results of combined analysis
Average increase per
week (lb.).
Percentage of mean .
1940
Unseed
cake
7.13
103.18
Groundnut
cake un-
decorticated
4.58
66.28
Gram
8.77
126.92
Arhar
chuni
8.79
127.21
1941
Mainseed cake
6.87
99.42
Groundnut
cake decor-
ticated
4.96
71.78
Rape
cake
6.30
91.17
Mung
chuni
8.83
127.79
1942
Linseed
cake
6.83
98.84
Til
cake
5.15
74.53
Guar
8.03
116.21
Mean
6.91
100.00
Critical difference
5 per cent.*
Treatments
with 4
animals
1.50
21.71
Treatments
with 5
animals
1.35
19.54
Treatments
one with 4
and the other
with 5
1.43
20.69
* Four animals under each treatment in 1940 and 1941 and 5 in 1942 were considered for the combined analysis.