Abstract:
The present work aimed at studying growth performance, carcass traits and health
status of broiler chicken feed enzyme over a period of 4 weeks. A total of 200-dayold
Lohmann
broiler
were
randomly
assigned
to
five
treatment
groups,
each
with
four
replicates
(10).
T
1
,
T
2
was
control
and
antibiotic.
whereas
T
3
,
T
4
,
T
5
was
provided
as
0.05%,
0.1%
and
0.15%
of
enzyme
respectively.
The
results
revealed
significant
(P<0.05) difference in feed intake (T
2
-2197.00±30.20 g and T
5
-2324.75±19.76
g) and
live weight (T
5
-1937.5±17.97 g and T
2
-1808.00±23.68
g). There is no significance in
FCR value & livability. The flock uniformity percent were significant. In control
group T
1
(78.25±2.29) was average and other groups were uniformed. Highest
hemoglobin (T
5
-9.12±0.18g/dl), RBC (T
2
-3.97±0.09
mill/cum), WBC (T
1
-14.48±0.74
mill/cum), lymphocytes (T
1
-38.50%), Monocytes (T
5
-2.25±.25 %), Platelets (T
3-
31.25±0.63x10
4
/mm
3
), PCV (T
5-
28.48%), MCV (T
5
-87.74±0.25 FI), MCH (T
4
-28.77
Pg.) were found in the enzyme treated groups, which is an indication of good health.
E. coli and salmonella spp. count was significantly (P<0.05) lower in birds
fed 0.15% enzyme supplemented diet and with a descending order of 0.1%
and 0.05% enzyme level. Salmonella spp. and E. Coli count was also
significantly (p<0.05) higher in birds fed control. The results of the study
demonstrate the beneficial effects of supplementing enzyme on body weight and
dressed yield in the treated groups in broiler chicken. Enzyme is therefore, suggested
to be used as an alternative to antibiotics of broiler chicken ration for higher
profitability.
Description:
A Thesis
Submitted to Department of Poultry Science
Sher-e-Bangla Agricultural University, Dhaka-1207
In partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE (MS) IN POULTRY SCIENCE
SEMESTER: JANUARY-JUNE, 2021
