QUANTITY , QUALITY CHARACTERISTICS AND  CHEMICAL COMPOSITION OF EGGS PRODUCED FROM CHICKENS INFECTED WITH LISTERIA MONOCYTOGENES

A. Al-Obaidi, Faris

	QUANTITY , QUALITY CHARACTERISTICS AND CHEMICAL COMPOSITION OF EGGS PRODUCED FROM CHICKENS INFECTED WITH LISTERIA MONOCYTOGENES
journal of al-qadisiyah for pure science(quarterly)
Article 1, Volume 10, Issue 2, 2010, Pages 10-20 PDF (0 K)
Author
Faris A. Al-Obaidi
Abstract
The object of this research was to study egg production , quality characteristics and chemical composition of eggs from chickens experimentally infected by Literia monocytogenes . Eggs collected from 45 layer chickens which were distributed into three groups and each group to three replicates (15 layer per replicate) cosnsisted of T1 (control group free of infection ) , T2 and T3 were orally experimentally infected by 1x105 and 1x1010 (CFU ml hen of L. monocytogenes .Results indicated a significantl (P<0.01) reduction in egg production as numbers or percentages and egg weight during 42 days after infected by L.monocytogenes . The reduction in these characters increased as the infection dose increased , although no mortality in chickens appeared . The T2 and T3 groups significantly (P<0.05) reduced yolk weigh percentage and shell thickness while in the same time increased albumen weigh percentage at 15 days after infection compared with T1 and no differences in shell weigh percentage , haugh unit and yolk index were noticed during this study . No significant differences in the chemical composition of egg albumen among the three groups , whenas T2 and T3 groups compared with T1 significantly (P<0.05) increased lipid percentage and cholesterol concentration in egg yolk at 15 days after infection. That indicated of the role of L.monocytogenes infection to reduce production , some quality characteristics and increases lipid, cholesterol content of eggs.

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