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Basic characterization of selected samples of animal feeds
Svoboda, Ilona ; Hrstka, Miroslav (referee) ; Vítová, Eva (advisor)
The aim of the diploma thesis was to choose poper parameters for a quick and simple characterization of animal feed, to verify working procedures and to apply these on chosen samples. Within the scope of this work, samples of animal dog feed produced in a private company „Adamkovy tlacenky“ were analyzed. The feed is in the form of brawn, stored in artificial casing; it consists of up to 80% of animal components and up to 20% of vegetable components, while the rest of the weight is the pork gelatine. The feed does not contain preservatives, colourings as well as any other chemically produced additives. For the analysis three formulas were chosen: "Hovězinka", "Kuřátko" and "Srdcovka", the composition of which is protected by the patent. The choice was made to include samples of different composition. The content of raw crude protein, fat, fibre, dry basis, and ash was determined. The obtained values were compared with the standards for feed normally utilized by the feed industry. The results will be used to improve the formulas and to develop new types of feed.
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The content of chosen mycotoxins in feeds
Zelníčková, Lenka ; Babák, Libor (referee) ; Kellnerová, Dita (advisor)
This diploma thesis is focused on current problematics of monitoring of selected mycotoxins, DON and ZEA, in feeds in Czech Republic. The objective of my thesis was to elaborate a literature search from available books, electronic and periodical sources and service materials. Literature search is aimed at overall overview of mycotoxins, describes their characteristics, biological effects, methods of detection as well as summarizes recent legislation requirements concerning occurrence of these substances in feeds for animals. The aim of experimental part was a determination of selected mycotoxins in feed (DON and ZEA) by ELISA method and their evaluation according to the maximum limits. The diploma thesis was prepared in diagnostic laboratory SEVARON, s. r. o. in Brno.
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Vliv alternativních zdrojů bílkovin v rybím krmivu na růst ryb a rostlin ve dvousmyčkovém akvaponickém systému
NIKL, Ondřej
The objective of this thesis was to evaluate the production efficiency of feeds which were designed with the intention of developing a special aquaponic feed. Further, to evaluate the content of nutrients in water, sludge and nutrient solutions and their influence on plant growth and finally suggest possible modifications to the feed composition. Aquaponic feed should respect nutritional requirements of fishes and plants, not put burden on the environment by not used nutrients and with regards to sustainability, use alternative sources of protein instead of marine fish meal. Because of that, three experimental isoprotein and isocaloric feeds were proposed. Feed A contained conventional ingredients including marine fish meal. Feed B used freshwater fish meal and exclusively plant proteins not regarding its origin. Feed C was made of sustainable and local sources of protein. The experiment was conducted in the aquaponic hall of Faculty of Fisheries and Protection of Waters, University of South Bohemia. As experimental material was used Nile tilapia (Oreochromis niloticus) and lettuce (Lactuca sativa). Feed B shown similar values of all production indicators as conventional feed A. Weight of fishes in system A after thirteen weeks increased by 143,68 % and in system B by 136,56 %. Weight of fishes in system B was at the end of experiment inconclusively lower by 4,08 %. Feed conversion ratio (FCR) of feed B (1,92?0,10) was inconclusively higher by 8,47 % against FCR of feed A (1,77?0,13). Average weight of aerial parts of plants growing in nutrient solution created from mineralized sludge gathered from system B, supplemented with missing nutrients reached value 221,8?33,9 g after four weeks. That was inconclusively more by 44,21 % than average weight of plants grown in special hydroponic solution and by 8,62 % more than weight of plants grown in enriched solution gathered from system A. Experimentally it was proven that in aquaponic feeds it is possible to substitute marine fish meal by alternative source of protein and using these feeds ensure an effective nutrition for fish and plants in a two-loop aquaponic system.
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Basic characterization of selected samples of animal feeds
Svoboda, Ilona ; Hrstka, Miroslav (referee) ; Vítová, Eva (advisor)
The aim of the diploma thesis was to choose poper parameters for a quick and simple characterization of animal feed, to verify working procedures and to apply these on chosen samples. Within the scope of this work, samples of animal dog feed produced in a private company „Adamkovy tlacenky“ were analyzed. The feed is in the form of brawn, stored in artificial casing; it consists of up to 80% of animal components and up to 20% of vegetable components, while the rest of the weight is the pork gelatine. The feed does not contain preservatives, colourings as well as any other chemically produced additives. For the analysis three formulas were chosen: "Hovězinka", "Kuřátko" and "Srdcovka", the composition of which is protected by the patent. The choice was made to include samples of different composition. The content of raw crude protein, fat, fibre, dry basis, and ash was determined. The obtained values were compared with the standards for feed normally utilized by the feed industry. The results will be used to improve the formulas and to develop new types of feed.
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The content of chosen mycotoxins in feeds
Zelníčková, Lenka ; Babák, Libor (referee) ; Kellnerová, Dita (advisor)
This diploma thesis is focused on current problematics of monitoring of selected mycotoxins, DON and ZEA, in feeds in Czech Republic. The objective of my thesis was to elaborate a literature search from available books, electronic and periodical sources and service materials. Literature search is aimed at overall overview of mycotoxins, describes their characteristics, biological effects, methods of detection as well as summarizes recent legislation requirements concerning occurrence of these substances in feeds for animals. The aim of experimental part was a determination of selected mycotoxins in feed (DON and ZEA) by ELISA method and their evaluation according to the maximum limits. The diploma thesis was prepared in diagnostic laboratory SEVARON, s. r. o. in Brno.
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The efficiency testing of production commercial feeds for african catfish (Clarias gariepinus)
PETR, Miloš
In my diploma thesis I was tested six types of feed. I tested in 3 repetitions in the recirculating system with biological treatment of water. Tested fishes african catfish (Clarias gariepinus) weighted between 200 ? 800 g per piece, were deployed into 18 aquariums with volume of 190 litres per aquarium. The whole experiment took place in five partial 3-week periods in the intensive breeding of the laboratory - controlled reproduction of fishes FROV JCU. The average water temperature during the experiment was 27 °C. The main objective of the thesis was to observe production efficiency of tested types of feed, speed of the growth of fishes, feed rates and financial costs. Afterwards, determinativ of yield and organoleptic evaluation was determined, followed by laboratory examination of composition of meat. The results of production indicators (Specific Growth Rate, Relative Growth Rate, Food Conversation Ratio) were most favorable for 3 types of feed ? Haltáp (SGR=0,81 %; RGR=126 %; FCR=1,45), Coppens TROCO SUPREME-22 (SGR=0,73 %; RGR=105 %; FCR=1,19), Coppens TROCO PRIME-18 (SGR=0,68 %; RGR=97 %; FCR=1,26). The lowest costs for 1 kg of fish increment were achieved for these specific types of feed Haltáp and Aller Aqua Focus (45 Kč a 46 Kč). In the organoleptic analysis was found positive evaluation of meat of all tested fishes. Chemical composition of meat was (in term of proteins and fats content) most favorably documented for the hungarian feed called Haltáp (proteins=19,22 % and fats=4,85 %).
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