Ellakany, H., Rayhan, E., Awad, A., Abd El-Hamid, H. (2009). THE EFFECT OF ANTIBIOTICS AND ACIDIFIER TREATMENT ON THE COUNT OF LACTOBACILLUS SP., E. COLI AND CLOSTRIDIUM SP. IN THE INTESTINE OF CHICKENS. test, 7(1), 406-429. doi: 10.21608/kvmj.2009.108423
H.F. Ellakany; E.A Rayhan; A.M. Awad; H.S. Abd El-Hamid. "THE EFFECT OF ANTIBIOTICS AND ACIDIFIER TREATMENT ON THE COUNT OF LACTOBACILLUS SP., E. COLI AND CLOSTRIDIUM SP. IN THE INTESTINE OF CHICKENS". test, 7, 1, 2009, 406-429. doi: 10.21608/kvmj.2009.108423
Ellakany, H., Rayhan, E., Awad, A., Abd El-Hamid, H. (2009). 'THE EFFECT OF ANTIBIOTICS AND ACIDIFIER TREATMENT ON THE COUNT OF LACTOBACILLUS SP., E. COLI AND CLOSTRIDIUM SP. IN THE INTESTINE OF CHICKENS', test, 7(1), pp. 406-429. doi: 10.21608/kvmj.2009.108423
Ellakany, H., Rayhan, E., Awad, A., Abd El-Hamid, H. THE EFFECT OF ANTIBIOTICS AND ACIDIFIER TREATMENT ON THE COUNT OF LACTOBACILLUS SP., E. COLI AND CLOSTRIDIUM SP. IN THE INTESTINE OF CHICKENS. test, 2009; 7(1): 406-429. doi: 10.21608/kvmj.2009.108423

THE EFFECT OF ANTIBIOTICS AND ACIDIFIER TREATMENT ON THE COUNT OF LACTOBACILLUS SP., E. COLI AND CLOSTRIDIUM SP. IN THE INTESTINE OF CHICKENS

Kafrelsheikh Veterinary Medical Journal
Article 23, Volume 7, Issue 1, May 2009, Pages 406-429    PDF (376.19 K)
Document Type: Original Article
DOI: 10.21608/kvmj.2009.108423
Authors
H.F. Ellakany* 1; E.A Rayhan2; A.M. Awad1; H.S. Abd El-Hamid3
1Poultry and Fish Diseases Dept., Fac. Vet. Med., Alexandria University
2Animal Health Research Institute, Damanhour Branch
3Fac. Vet. Med., Alexandria University, Damanhour Branch
Abstract
The effect of addition of some commonly used antibiotics and acidifier
on the total bacterial count of defined intestinal microflora as Lactobacillus
sp., E. coli, and Clostridium sp. with special reference to Cl.
perfringens was studied.
Two antibiotic doses were used: from 14-16th day of age and again
from 29th -31st day of age. The second course was followed by an
acidifier for 3 days.
Results showed that doxycycline and amoxicillin had the most
inhibitory effects on Lactobacillus sp. This inhibitory effect was more
pronounced if an acidifier was used after these antibiotics than if they
were used alone.
Cephradin, spiramycin, doxycycline, tylosin, floramphenicol and enrofloxacin
showed good inhibitory effects on E. coli. This result
concerning E. coli can not be taken as a model of recommendation
because the continuous change in the drug resistance of this bacterium.
Spiramycin, cephradin, amoxicillin, doxycycline, tylosin, lincospectin
and enrofloxacin were effective against Cl. perfringens and other
Clostridium sp. The antibacterial action of these antibiotics was
increased if an acidifier was used afterwards.
One week after the end of the antibiotics and acidifier treatment, there
was a decrease in both Lactobacillus sp., E. coli and Clostridium sp.
counts in the intestine with one log lower (104) than that count in case
of antibiotics without acidifier (105). This finding encourages us to
recommend usage of acidifiers for chicken specially after antibiotic
courses to prolong their antibacterial activity.
 

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Keywords
ANTIBIOTICS; ACIDIFIER; LACTOBACILLUS SP., E. COLI; CLOSTRIDIUM SP
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