Influence Of Bacillus subtiils As a Probiotic On Escherichia coli Infection In Embryonating Eggs

H. Majeed, G.; A. N.  Al - Taher, H.; S. Al- Mayah, A.

	Influence Of Bacillus subtiils As a Probiotic On Escherichia coli Infection In Embryonating Eggs
iraqi poultry sciences journal
Article 1, Volume 2, Issue 2, 2007, Pages 226-233
Authors
G. H. Majeed; H. A. N. Al - Taher; A. S. Al- Mayah
Abstract
This study included three experiments; the first one examined the effect of pathogenic E coli on the hatchability and embryo mortality of contaminated hatching eggs at the 1st and 18th day of incubation by dipping in a broth culture containing E coli. Contamination at the first day resulted in a non – significant effact in the number of the hatched embryo, whereas dead in shell embryo was significantly increased (p<0.05). Exposure on the 18th day exhibited a significant(p<0.01) decrease in hatchability and an increase in the embryo mortality. Dipping on the 18th the day resulted in a significant (p<0.05) decrease of hatchability and increase of embryo mortality compared with of the 1st day. In comparison with the control the results of the second experiment revealed that a none – significant differences recorded neither at 1st nor 18th day of incubation, in hatchability and embryo mortality due to the contamination of hatching eggs with Bacillus subtilis alone. The third experiment which was conducted to explore the effect of probiotic, B. Subtilis, on the pathogenic E. coli exhibited that significant difference had not been recorded in hatchability on the 1st or 18th day of incubation which indicated that B subtilis has no effect on E. Coli. However significant increase (p<0.05) in embryo mortality was observed at both periods of treatment which revealed that E. coli was not affected with B. Subtilis as probiotic in this work.

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