Abstract:
A trial using 120 day old “Lohman strain (Indian River)” commercial broiler chicks
were carried out on littered floor for a period of four weeks at Sher-e-Bangla
Agricultural University Poultry Farm, Dhaka. The study was designed to investigate
the efficacy of Aloevera and Garlic extract in drinking water in order to evaluate the
bird’s performance, carcass characteristics and economic utility on broiler rearing that
includes production cost, profit per bird (PPB) and benefit cost ratio (BCR). The
experimental birds were allocated randomly into 3 treatments and a control group
with three replications having 8 broilers per replication. The AVG was mixed with
drinking water at three concentration levels: 1% Aloevera gel of DW in DW (T
2
), 1%
Garlic of DW in DW (T
3
), 0.5% Aloevera gel + 0.5% Garlic of DW in DW (T
4
) and
the group without AVG supplementation was control (T
0
and T
1
). As per the result T
4
performed well according to the production performance. Results demonstrated that
the average water intake in different groups were insignificant (P>0.05). A significant
difference (P<0.05) was noted on body weight, feed consumption, body weight gain
(BWG) in the birds treated with AVG. Additionally, Feed Conversion Ratio (FCR)
had been improved. The better FCR was observed in combined AVG treated group,
T
4
(1.31) than the other. A difference was figured on broilers survivability between
the treatment groups and the control. Carcass percentage was significantly (P<0.05)
higher in all treatment groups than control. Edible portion of birds was found
significantly (P<0.05) higher in T
4
(67.00%±0.58) than T
2
(66.00%±0.58), T
3
(65.67%±0.33), T
1
(65.00%) and control T
0
(64.67%±0.67). The combination of
aloevera and garlic was not cost effective due to the treatment cost. Where, the
antibiotic positive and the antibiotic negative control were cost effective. However,
negative control had been found with higher mortality than the other. It is reviewed
that, though antibiotic promotes the growth, such type of practice reduces the natural
improvement of gut environment as well as disease fighting capability, a reason
behind reducing production in broiler industry. Therefore, the application of AVG
will help naturally, in production without resistance. However, Aloevera & Garlic
induced treatments (T
2
, T
3
, T
4
) lead to less BCR and profit than controls (T
1
). It is
recommended that T
4
(0.5% Aloe+ 0.5% Garlic) can be used for safe broiler meat
production rather than using antibiotics.
, T
0
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: JULY-DECEMBER/2019
