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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Comparison of qualitative indicators of hen's eggs from different types of feeding
 ŠTĚPÁN, Stanislav
The presented bachelor thesis dealt with the comparison of qualitative indicators of hen's eggs from different types of breeding. Samples from cage farming production system, indoor housing systém and free-range home breeding were used for comparison. Ten eggs from each type were used. The following qualitative indicators were evaluated and compared - egg weight, shell integrity, air cell height, shape indices (shape index and egg index), occurrence of blood and meat spots, solid egg white and yolk index, egg quality expressed in Haugh units and shell thickness. The eggs from the individual types of breeding were similar in shape, but diffe-red the most in size and weight, the weight was measured from 49 to 91 g. Two samples had a damaged shell. The height of the air cell ranged from 2 to 4 mm. The values of the solid protein index ranged from 0.061 to 0.156 and the yolk index ranged from 0.39 to 0.51. Haugh units ranged from 74 to 107. The shell thickness was between 0.37 and 0.47 mm. All results were in or near the average.
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Poultry cryptosporidiosis
 KURAL, Vladimír
A total of 270 samples of domestic hen (Gallus gallus f. domestica) from 20 farms were collected during two consecutive years (from 2011 to 2012). Microscopical examination of aniline-carbol-methyl violet stained fecal smears revealed 5 positive samples originating from one farm. DNA was extracted from Cryptosporidium positive samples and all microscopically negative samples. Nested PCR was performed to amplify the partial SSU rRNA gene of Cryptosporidium. The sequence analyses of PCR-positive specimens identified 8 samples as a novel genotype, working titled Cryptosporidium hen genotype. The sequences identified as hen genotype matched most closely with Cryptosporidium bovis which was originally reported from cattle in the most cases.
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