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Silážování mechanicky upraveného vlhkého kukuřičného zrna
Balatka, Michal
This diploma thesis examines the method of silage preparation and the effect of selected additives in mechanically treated wet corn grain (HMGC). In a literature search, the issue is summarized according to the available information, ranging from methods of using maize seeds as whole plants to split harvesting with use for silage. The development of historical methods, technological factors affecting the quality of the resulting silage, the appropriate choice of silage additives, storage to bag, opening and the method of silage collection are described. Attention is also paid to the course of the fermentation process, the various factors affecting the resulting silage are related to quality indicators and an evaluation of the quality of wet maize grain silages. In the practical part, an experiment was carried out that focuses on the application of different additives used in the ensiling of HMGC and storage time. In a specific farm, silage was placed in polyethylene bags and sampling with subsequent analyses was carried out at time intervals. Silage additive variants are compared with each other in parameters monitoring nutritional value and fermentation quality. The results were then evaluated and processed by statistical methods presented in tables and graphs.
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Analýza kvalitativních ukazatelů silážovaných krmiv
NECHVÁTAL, Jaroslav
The aim of this thesis is to analyse chosen characteristics of silage quality. Total of 119 samples of grass silage and corn silage from the year 2018 were analysed. The quality of fermentation was analysed and silage was evaluated according to "Norma 2004", german evaluation system by Kaiser 2006 and slovakian system by Mitrík 2016. All the results were compared. 82 % of samples according to "Norma 2004", 88 % according to Kaiser and 83 % according to Mitrík were classified as the first class of fermentation. The influence of additives was also included in the evaluation of fermentation. The influence of bacterial and bacterial-enzymatic additives on the content of nutrients was observed. The results were compared with the average values of the silage of the year 2018.
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Stanovení in vitro stravitelnosti organické hmoty kukuřičné siláže pepsin-celulázovou metodou
FOUS, Dominik
Silage, and especially maize silage, is the most abundant roughage both in the Czech Republic and in Europe. Silage compensates for a large part of the energy needed for the proper performance of animals. Stable efficiency and its increase can be ensured only by a constant and balanced composition of the feed ration throughout the year. Due to the importance of preparing quality feed, additives are often used. It is possible to add homofermentative bacteria to the ensiled mass with silage additives to rapidly lower the pH of the silage, or to add heterofermentative bacteria which improve aerobic stability in the silage, it is also possible to combine these bacteria or use other silage additives.
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Influence of different factors for qualitative parameters of ensilage feedstuffs
KUBÁT, Václav
In the operating conditions, for the period of three years, were estimated the qualitative factors affecting the qualitative parameters of grass silages. The fermentation characteristics and the total quality of silages were evaluated by the recommendations of AgroKonzulta Žamberk and EKO-LAB Žamberk companies. The feed samples (silages) were evaluated in two sets of databases. First set of samples assessed the impact of additive substances on the basis of parameters of fermentation characteristics. This first set of samples was divided into three groups; each of them had 14 samples. First group of the samples was untreated; no preservations were used on these samples. Into the second group of the samples were included the silages treated with bacterial preparations. The third group contained the silage samples treated with bacterial-enzyme preparations. It is possible to conclude that the silage{\crq}s additives positively affect the fermentation process and thus the final silage quality. High statistical significance (P < 0.01) was found for level of proteolysis. Better values were achieved in groups with the use of preservations. Group of grass silages using preservations achieved significantly better values (P < 0.05) in lactic acid content than the group with none using of the preservations. Grass silage samples treated with the bacterial-enzymatic preparations had about 14.4 % more representations in I. class quality than the group treated with bacterial preparation. The second set of samples was classified by the phenophases: before the heading, the beginning of heading and full heading. Each group contained 12 samples. The parameters of nutritional value were evaluated. The chemical compositions (NL, PDIN and SOH) were highly significantly affected (P < 0.01) by the phenophases. The best results have been reported in grass silage harvested in the phenophase before the heading. The chemical compositions CF and NEL were better (P < 0.01) in grass silages harvested in the phenophase before the heading and in the phenophase the beginning of heading against grass silage harvested in the phenophase full heading.
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Analýza kvalitativních ukazatelů kukuřičné siláže
BROŽ, Petr
The Livestock production is in many ways a progressive discipline, which is characterized in that it blends several seemingly unrelated industries. One of the most important nutrition and feed livestock. With the development of the cultivation of maize (Zea mays), and the need for its preservation, it was necessary to develop a methodology proper ensiling. This practice establishes the correct principles for the production of high-quality, nutritional value and harmless silage. It already belongs to the selection of the optimal hybrid, suitable agronomic measures during cultivation, build a functional and efficient silage lines, selection and application of additives, proper layering and ramming masses and responsible handling of ready-made food, including a ration.
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