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Cemical composition of hemp (\kur{Cannabis sativa}) and possibilities of its utilization as animal feed
NĚMCOVÁ, Michaela
Cannabis sativa L. is an annual cultural plant used from ancient times up to the present in many spheres of the human life. The aim of this bachelor study was to summarize on the basis of literature sources the information about chemical composition of the hemp seed (basic composition, content of amino acids, fiber, vitamins and specific substances, etc.), genetic variability in the substances content, and possibilities of utilization of the hemp seed and also plant residues as feed. Feeding hemp seeds to poultry increases egg production and enriches egg yolk with carotenoids, - 3 and - 6 fatty acids and decreases the cholesterol content. In case of broilers, hemp seeds increases the weight of the breasts, thighs, liver, stomach, intestines and the portion of abdominal fat. Hemp seed cakes have a positive effect on rumen function, support reception of neutral detergent fiber and increases the unsaturated fatty acids content in the meat. Hemp oil relieves stress and improves immunity of the fed animals.
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Vývoj pěstování máku setého (Papaver somniferum L.) na území České republiky
Petrželová, Lenka
The objective of this thesis was to summarize present knowledge of opium poppy cultivation in the Czech Republic. There are described the biological characteristics and poppy growing technologies. The first chapter is devoted to the origin and biological characterization of opium poppy. The growing areas and poppy agro techniques cultivators are discussed in the second charter. Other chapters are dedicated to legislative and economic sides of the problem. The main diseases and poppy pests are mentioned in final chapters of this thesis. Current problems of poppy cultivation in the Czech Republic are pointed out in the whole thesis.
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Ant food preferences (Formica genus) on the seeds with elaiosomes
ENGLICKÝ, Tomáš
The topic of the presented bachelor thesis is the determination of the ants g. Formica preference for specific seeds with elaiosomes. The ant dispersion of the seeds with elaiosomes is called myrmecochory. The theoretical part of this thesis describes the myrmecochory phenomenon in the context of the seed dispersal. The conclusion of the theoretical part evaluates considerable benefit of myrmecochory for ants and plants despite its disadvantages. The practical part of this thesis describes the experiment held with the intention to determine the preferences of the ants. The seeds with elaiosomes from five experimental plants were presented to the ants from two experimental anthills. Obtained data were processed into tables and graphs and subsequently evaluated. The results show that the ants prefer certain types of seeds. The cause for this preference is discussed.
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Nutritive and technological quality of hemp seeds
PŮLPYTLOVÁ, Jaroslava
Hemp (Cannabis sativa) is a traditional oil and fiber crop. Its use is universal. Hemp seeds have been consumed in history as a nutritious food. The aim of this work is to summarize information about the nutritional quality of hemp seeds (base composition, amino acid, fibre, vitamin, specific substances content, etc.), technological quality parameters (TGW, the yield of hulled seeds), possibilities of processing and hemp seed products on the market.. Hemp seed contains about 25-35 % oil that is rich in linoleic and linolenic acids, 20-25 % easily digestible protein, 10-15 % saccharides mainly as fibre, vitamins A, B1, B2, B6, C and E. Basic processing techniques of hemp seeds include size separation and hulling. The yield of hulled hemp seeds can be higher as 75%. The hemp oil for food industry is produced by cold pressing. Rests after seed oil pressing (seed cake) are suitable for production of hemp-meal. In the Czech Republic, a whole range of hemp products are sold e.g. hulled hemp seeds, chocolate with hemp seeds, yogurt with hemp seeds, hemp oil, hemp meal, pasta, wine, beer, spice, and others.
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