ORIGINAL PAPER
Bacterial microflora of the chicken embryos and newly hatched chicken
 
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Department of Pre-Clinical Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland
CORRESPONDING AUTHOR
M. Kizerwetter-Świda   

Department of Pre-Clinical Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland
Publication date: 2008-04-08
 
J. Anim. Feed Sci. 2008;17(2):224–232
 
KEYWORDS
ABSTRACT
The purpose of the study was to examine of bacteria present in chicken embryos and newly hatched chicks. The bacteria were determined quantitatively in caecal contents, liver and yolk sac of 25 embryos at 18 day of incubation, 25 embryos at 20 day incubation, and 25 newly hatched chicks. Gram-positive cocci belonging to the Enterococcus genus dominated in all samples examined and their population number amounted from 102 to 106 CFU/g in caecal contents, 102-104 CFU/g in yolk sac, and 103 CFU/g in liver. Other bacteria present in some samples were: Staphylococcus sp. 102-104 CFU/g, E. coli 106 CFU/g, C. tertium 105 CFU/g, Klebsiella sp. 104 CFU/g, and Enterobacter sp. 102 CFU/g. The results obtained indicate that the profile of gut microflora becomes more differentiated and their population number of particular groups higher with the age of embryos. Moreover, potentially pathogenic bacteria, including anaerobic Clostridium tertium may be isolated already during hatching period, suggesting the possibility of infection of embryos and newly hatched chicks.
 
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ISSN:1230-1388