Congenital abnormalities in dead-in-shell chicks associated with mixed bacterial infections.

摘要: Abstract Determination of the chick embryonic developmental period at which mortalities occur could help in establishing cause such mortalities. The late stage development has particular importance due to its dramatic effect on life after hatching. This study was conducted investigate occurrence, frequency and bacterial isolates from dead-in-shell embryos Northern Jordan. A total 1,000 unhatched eggs were collected hatching day 10 hatcheries located Out eggs, 357 (35.7%) fertile, 210 (58.8%) embryos. Approximately 50.5% dead displayed abnormalities, including neck muscles with subcutaneous petechial haemorrhages (44.3%), beak abnormalities (3.8%), eye deformities (1.9%) anencephaly (0.5%). Sixty-six identified 82 samples 22 (33.3%) Escherichia coli, 18 (27.3%) Klebsiella pneumoniae, 14 (21.2%) Staphylococcus aureus, 5 (7.6%) Pseudomonas aeruginosa, 4 (6.1%) Salmonella enteritidis, 2 (3%) Bacillus cereus 1 (1.5%) Proteus vulgaris. Mixed growth also recorded 16 (19.5%) samples. There a significant (P