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Egg yolk pigmentation is one of major quality attribute linked to consumer requirements concerning eggs. The colour of the egg yolk is a dietary response, depending on the levels of carotenoids present in the feed. The purpose of the present study was to investigate the effects of feed supplementation with dried tomato waste in commercial laying hens on egg production, egg quality, egg yolk colour and carotenoid composition. The hens were fed the basal diet (BD) and the diet supplemented with 7,5% dried tomato was...

Sewage sludge ash, a by пїЅ product of municipal sewage sludge thermal utilization, is one of the complex anthropogenic and potentially useful materials. The innovative proposal of sewage sludge ash usage is to use it as a raw material for synthetic zeolites. This article shows results of zeolitization of sewage sludge ash by the direct hydrothermal method and the indirect fusion method. Zeolitization of sewage sludge ash was conducted at the activation time of 12 hours, the activation temperature of 60oC, the cry...

The Ashalchinsky bituminous field is located in the southeast of Tatarstan Republic, in south-east part (Volga-Ural region) of Russian platform. The Ufimian reservoir sandstones from above present productive layers blocked by caprocks of Kazanian claystones. Bituminous sandwich of greywacke, fine-grained, loose aggregate, cemented with bitumen. The study of sandstones by SEM analysis showed a high content of analcime - a mineral group of zeolites. Analcim forms crusts consisting of irregular crystal intergrowths. ...