الفهرس | Only 14 pages are availabe for public view |
Abstract 734 eggs (484 from balady hatcheries and 250 from modern one) containing dead embryos at different embryonic phases and 60 samples from each of air, walls and floors of setters and hatchers. These samples were collected from different hatqheries at Behera Province and examined bacteriologicallyl and I mycologicallyto correlate between the contamination of e sand general hatchery sanitation which may lead to increase of d ad-inshell eggs. isolates from egg shells was 27.13% and from egg contents was Q7.l30,...while its incidence was 48.8, 33.33 and 33.33% from air, walls and floors,respectively. • E. coli was the most predominant bacterium at the modern hatchery where its incidence was 28.57, 31.53, 50, 57 and 28% from egg shells, contents, air, walls and floors, respectively. • Salmonellae were isolated from egg contents of baladi hatcheries only and could not be isolated from the modern hatchery. Salmonellae were identified as Salmonella gallinarum - pullorum and Salmonella typhimurium. • Klebsiella pneumoniae was isolated from the egg shell and content, and environment of baladi and modern hatcheries. The high incidence was in air of modern hatchery where it was 33.33%. • Citrobacter freundii and Enterobacter aerogenes were ”isolatedfrom the egg with late dead embryo only where they were isolated from the shell and contents of baladi hatcheries at an ilacidence of 9.3 and 8.54% while from modern hatchery tIley were 9.52 and 7.14%, respectively. They were also +ted from the walls and floors but not from air. Pseudomonas a~inosa was isolated from baladi and modern hatcherIP but not from the air of modern l’ hatcheries. • Staphylococcus aureus was isolated from baladi hatcheries only but was not isolated from modern ones where its incidence was 13.95 and 12.6% from shells and egg contents, respectively. II. Mycological isolation and identification: • The rate of fungal contamination of baladi hatcheries was higher than that of modern one. Also, the rate of contamination of egg shells was higher than that of egg contents. • Aspergillus niger was the most prevalent fungus isolated from baladi and modern hatcheries. Its incidence from the shell, egg contents, air, wall and floor samples of baladi hatcheries was 30, 36.96, 17.12, 16.42 and 15.29%, respectively. While, at modern hatchery was 27.67, 27.66, 17.86, 18.75 and 19.30%,respectively. • Aspergillus flaws, Aspergillus fumiqatus and Aspergillus terreus were isolated from shells and egg contents and environment ofbaladi hatcheries and modern ones. • Penicillium C1Jclopiumand Penicillium citrinum were isolated from baladi and mIIlern hatcheries. • Cladosporium spp. and Fusarium spp, were isolated from balac!j.hatcheries but not from modem ones. • Geotrichum candidum. and Mucor were isolated from eggs (shell and contents), walls and floors of baladi hatcheries but onlywas isolated from floors of the modem hatcheries. • Candida albicans was the most prevalent yeast isolated from the environment of baladi and modern hatcheries. It was isolated from the eggs with different percentages. Also, Candida tropicalis could be isolated from baladi and modem hatcheries. • Rhodotorulla spp. was the most predominant yeast isolated from the eggs of baladi and modem hatchery. Good hygienic measures help ill minimizing the rate of contamination and infection. |