| dc.description.abstract | The experiment was conducted in the Department of Physiology, Faculty of
Veterinary and Animal Science, SAU during the period from July 2014 to December
2014 to assess the performance and hemato-logical profiles of broilers with different
feed additives. A total of 160, day-old COBB-500 broiler chicks were reared for 35
days and performance and hemato- logical profiles were recorded weekly. In the
present study, significantly (p<0.05) highest values were found with citric acid in
live weight (1790.00±2.10 gm/bird) and weight gain (1737.50±3.12 gm/bird)
followed by probiotics in live weight (1719.25±2.95 gm/bird) and weight gain
(1670.00±4.11 gm/bird). The cumulative feed intake was highest for citric acid group
(3028.00±1.47 gm/bird), which varied significantly (p<0.05) among probiotic
(3015.50±4.80 gm/bird), antibiotic (3004.75±2.87 gm/bird) and control group
(2940.50±5.12 gm/bird). For whole period, significantly highest (p<0.05) feed
conversion efficiency (FCE) was found in citric acid group (574.80±2.88),
intermediate in probiotic (554.97±3.32), and antibiotic group (548.46±2.43) as well as
lowest in control group (525.08±1.74). Significantly (p<0.05) highest feed conversion
ratio (FCR) found in citric acid group (1.74±0.003) of proliotic (1.80±0.007), antibiotic
(1.82±0.004) and control group (1.90±0.007). On the last day of experiment,
significantly (p<0.05) increased number of TEC was observed in citric acid group
(3.27±0.09 million/mm3). Hemoglobin concentration was higher in citric acid group
(8.75±0.32 gm %) than the probiotic (8.25±0.25 gm %), antibiotic (8.38±0.23 gm %)
and control group (8.18±0.28 gm %) at the end of trial. The highest PCV was found in
citric acid group (28.15±0.68%) and lowest in antibiotic group (27.30±0.69%) on 35
day. From the study, it can be concluded that citric acid, and probiotics have positive
impacts on- studied parameters and can be used as alternatives to antibiotic growth
promoters in broiler production. Further study may be carried out to ascertain the
matter. | en_US |
