Bacteriological study to measure the degree of bacterial contamination and its impact on the proportion of hatching for a number of local hatcheries in Baghdad

Abstract

Samples were collected from three hatcheries in the city of Baghdad was chosen at random, for period 3\2005-9\2005,and included samples of the egg shells and paper pads and swabs from the transport vehicles and cloacal swabs from newly chicks for each of the three hatcheries the results were isolation the  following bacteria :Salmonella spp ,E.coli, Staphylococcus aureus, Strept.spp., Enterobacter cloacae and Citrobacter freundii.

    These isolates showed a variation in the proportion of total isolation between the three hatcheries, as well as variation in the proportion of each type. 

    The hatchery no.(3) was the first in terms of the proportion of total isolation(14,91%),while hatchery no.2 came the second place and then hatchery no.1 at third at the rates of isolation equal to (13,9%),(11,27%) respectively.

    Rates of total hatchability shows that hatchery No. (2) record the highest percentage of total hatchability by 91%, followed by hatchery No. (1), by 87%, then the hatchery No. (3) by 78%, but from the view of hatch of fertile,(which is more accurate for evaluation) the hatchery No.1 was at higher percentage of (80%) , followed by hatchery No.(2)with percent equal to 76% and hatchery No. (1) with percent equal to 68%, the reason for the differences of these ratios in the three hatcheries may be attributed to different proportion of bacterial contamination and its impact on these hatcheries.