AMMONIA EMISSION FROM OPEN SIDED BROILER HOUSES WITH DIFFERENT REARING SYSTEMS AND ITS IMPACT ON BROILER PRODUCTION
Date
2021-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DEPARTMENT OF ANIMAL NUTRITION, GENETICS AND BREEDING, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA -1207
Abstract
The demand for poultry products in Bangladesh has grown significantly. Poultry sector
needs to increase significantly to meet the growing domestic demand. However,
atmospheric ammonia inhibits broiler performance. Therefore, a study was planned to
investigate the effects of ammonia emission from different types of broiler houses and
its impact on productivity. A total of 135 day-old Lohmann broiler chicks were reared
at SAU Poultry Farm, Dhaka-1207. Chicks were divided randomly into 3 experimental
groups of 3 replications R
1
, R
2
and R
3
, where each replication contains 15 birds. These
three treatment groups were designated as T
0
indicated without ceiling fan. Whereas T
1
, T
1
and T
2
and T
2
. T
0
was control group which
were ceiling fan and ceiling fan with
exhaust fan, respectively. Results demonstrated that the average ammonia level was
same at the end of 1
st
week, however it varied significantly (P<0.05) at the end of 2
,
3
rd
and 4
th
week. The control group (T
0
) indicated the highest ammonia emissions at the
end of 2
nd
, 3
rd
and 4
th
week and T
2
showed the lowest ammonia emissions at the end of
2
nd
, 3
rd
and 4
th
week. At the end of 4
th
week significantly (P<0.05) higher emissions of
ammonia was found in control group T
0
(11.63
a
±0.17 ppm) and lower was found in
treated group T
2
(6.53
c
±0.14 ppm). BWG (Body Weight Gain), BW (Body Weight) and
FCR at the end of 4
th
week were insignificant (P>0.05) in different group, however
better BWG, BW and FCR were found in treated group T
2
(BWG 1812.33±26.82 gm,
BW 1852.76±26.82 gm,
FCR 1.31±0.04). Dressing percentage was non significantly
(P>0.05) higher in T
1
(65.10±1.05) and T
2
(65.72±0.35) than control group T
0
(64.33±0.48). The weight of spleen and gizzard in exhaust fan treated group T
2
was
significantly higher (P<0.05) than control group (T
0
). The weight of thigh, drumstick
and back in exhaust fan treated group T
2
was non significantly higher (P>0.05) than
control group (T
0
). Survivability rate (%) of the chicken was significantly higher
(P<0.05) in T
2
and T
1
group than control group (T
0
). In case of cost benefit ratio
analysis, BCR was significantly (P<0.05) higher in treatment group T
1
T
2
(1.35±0.01) than T
0
(1.35±0.01)
(1.30±0.02). Therefore, the research recommended that poultry
house with exhaust fan at bird’s level could be used on broiler production for better
performance and profitability.
nd
and
Description
A Thesis
Submitted to the Faculty of Animal Science & Veterinary Medicine,
Sher-e-Bangla Agricultural University, Dhaka-1207, in Partial
Fulfillment of the Requirements for the Degree of
MASTER OF SCIENCE (MS) IN ANIMAL NUTRITION
SEMESTER: January-June/2021
Keywords
AMMONIA EMISSION, BROILER HOUSES, REARING SYSTEMS, BROILER PRODUCTION