Abstract:
A total of 120 day old “Cobb-500” broiler chicks were reared in the poultry farm of
Sher-e-Bangla Agricultural University, Dhaka, to evaluate the growth performance of
broiler fed diet containing neem leaf powder (NLP) and sweet potato powder (SPP).
Chicks were divided randomly into 4 experimental group with 3 replications of each
group. Each replication contains 10 chicks. One of the 4 experimental group was fed
with antibiotics in basal diet and considered as control group (T
0
); the remain three
groups were fed diet with (2 g NLP + 2 g SPP)/kg feed (T
1
), (2 g NLP + 4 g SPP)/kg
feed (T
2
), and (2 g NLP + 6 g SPP)/kg feed (T
3
). Experiment revealed that the
relative final live weight (g) of broiler chicken in T
3
(1875.4
a
±23.27) group were
significantly (P<0.05) higher than other groups. Feed conversion ratio of T
1
(1.3133
b
±.008) was significantly (P<0.05) better than other groups including control
T
0
(1.3367
a
±0.03). Feed conversion ratio in T
3
(1.3333
a
±0.03) was also better than
control group T
0
(1.3367
a
±0.03) without any statistically significant (P<0.05)
differences. The dressing percentage of broiler were 66.66
b
±0.82%, 67.30
±2.07,
67.64
a
±1.3% and 64.68
c
±1.33% in T
1
,T
2,
T
3
and T
0
respectively. All treatment
groups were significantly (P< 0.05) higher than the control group. The relative weight
(g) of liver were 41.0
a
±.57, 41.0
a
±.57, 45.6
ab
±5.78 and 54.3
b
±2.02 in T
0
and
T
3
respectively; the relative weight of heart were 9.817±.14, 10.167±.35, 10.100±.56
and 10.933±.31 in T
0
, T
1
,T
2
and T
3
respectively; the relative weight of gizzard
37.167±.52, 38.033±1.92), 39.000±1.41 and 40.400±.15 in T
0
, T
1
respectively. The weight of liver, heart and gizzard in T
3
were significantly (P<0.05)
higher than the other groups including control. The feed consumption; body weight
gains (g); survivability rate; carcass weight; weight of intestine; immune organ
(spleen) and flock uniformity of broiler chicken were no significant (P>0.05)
difference among the treatment and control groups. The profit per bird were
57.7367
a
±.09, 57.9233
a
±1.33, 56.0067
a
±1.36 and 62.3933
b
±1.33 in T
0
respectively. T
3
was significantly (P< 0.05) higher than all groups including control
group. The experiment recommended that neem leaf powder and sweet potato
powder can be use at the concentration of (2 g NLP + 6 g SPP)/kg feed in broiler
production.
Description:
A Thesis
Submitted to the Faculty of Animal Science & Veterinary Medicine,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (M.S.)
IN
ANIMAL NUTRITION
