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Stanovení in vitro stravitelnosti organické hmoty kukuřičné siláže pepsin-celulázovou metodou
Konupčíková, Lenka
The aim of my thesis was to determine at selected maize silage in vitro digestibility of organic matter by using pepsin cellulase method. Rated corn silage derived from two habitats. The first habitat was Senice in Hané and the second Záblatí. These silages were compared with samples from Žabčice municipality. A statistically significant difference was proven in the digestibility of organic matter in different habitats. Highest organic matter digestibility in corn silage was from Záblatí. Corn silage from Žabčice municipality had the lowest digestibility of organic matter. Among the evaluated habitat was a statistically significant difference in the content of individual nutrients. The fat content was greatest for corn silage from Senice in Hané. The station in Záblatí was measured volume of fiber, ADF, NDF and BNLV . The use of silage additives had no statistically significant effect on organic matter digestibility of corn silage or the content of individual nutrients . Effect of frozen corn silage on nutrient content was statistically significant. Frozen corn silage had a high dry matter content (over 40 %) and high level of fiber, ADF and NDF silage than unfrozen one. The silage contained 112 600 KJ / g mold.
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Pícniny v osevních postupech a ve výživě zvířat
Sláma, Miloš
The aim of the study was to assess the development of crop rotations with regard to the current state of fodder crops, when it began to wane sown forage and reduce the number of cattle as well. The thesis also deals with the principle of crop rotation, the appropriateness of including different types of forages and the influence of the inclusion of forage in crop rotation and nutrient parametres of cattle. Properly assembled crop rotation contributes to the smooth growing of plants and enrichment of the soil by a large number of underground and aboveground phytomass. Classification of forages contributes in many cases to increase soil fertility. Very suitable in this context is inclusion legumes, particularly clover plants, but also pea, which leave large quantities of crop residues and also due to symbiotic root with nodule bacteria fix atmospheric nitrogen. In ruminant rations represent an important source of protein components. The greatest use of legumes in feed industry is sown alfalfa and clover. To complement the carbohydrate components of the feeding dose is of utmost importance to maize silage, which is due root crops character with possible direct fertilization also improving crop in crop rotations.
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Ruminal effective degradability of neutral detergent fibre in ruminants
KOUKOL, Ondřej
Seven clover sampes (Trifolium pratense L.) were collected at three different miters A (n = 3), B (n = 3) a C (n = 1) during the growing season from 10th of May to 3rd of August. The samples were analyzed for chemical composition, gross energy (BE) content, in vivo sheep digestibility of organic matter (KS OH) and gross energy (KS BE) and in situ rumen degradability of neutral detergent fibre (NDF). The contents of ash, crude protein (NL), crude fibre (CF), NDF, acid detergent fibre (ADF), acid detergent lignin (ADL) and BE were significantly (P {>} 0,05) affected by the date of cutting time. The averaged values were for ash 119,2 g/kg of dry matter, NL 197,7 g/kg of dry matter, CF 236,5 g/kg of dry matter, NDF 400,7 g/kg of dry matter, ADF 296,2 g/kg of dry matter, ADL 73,8 g/kg of dry matter and BE 18,2 MJ/kg of dry matter. KS OH and KS BE generally decreased with higher dates of cutting time. On average KS OH and KS BE amounted 72,4 % and 70,2 %, respectively. The effective ruminal degradability (ED) of NDF generally decreased (P {>} 0,05) with increasing date of cutting time with values of 66,1 % (May 10), 63,6 % (May 18), 59,2 % (May 25), 64,8 % (June 29), 57,4 % (July 7), 56,9 % (July 13) a 51,6 % ( August 3). In situ characteristics were in average 77,1 % for the potential degradable NDF fraction (parameter b), 0,0703 h-1 for the fractional rate of degradation (parameter c) and 77,8 % for the digestible NDF (parameter DNDF).
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Following the growth, development, and speeds the aging of selected forage grasses.
ROUBÍČKOVÁ, Markéta
The grasslands are in the Czech Republic a significant element of the landscape and also one of the essential components of diets of ruminants and horses. In connection with the production function of grasslands is an important forage quality, especially in dairy cows with high yielding. To create high quality roughage is essential for the optimal harvest of grass maturity date, which significantly affects the nutrient content, the energy and digestibility. Between 2009 and 2010 was monitored growth, development and the speed of aging in selected varieties of forage grasses. In the breeding station Větrov grasses were sampled, dried and then analyzed in a laboratory at the Department of Crop Production University of South Bohemia in the České Budějovice. Eighteen varieties of grasses collected in seven successive terms in the month of May and June were total analyzed. In all samples were laboratory way determined dry matter, ash, fiber and in selected varieties of grasses digestibility. Dry forage yields increased gradually. In the process of aging occurs between phenological for all the analyzed varieties of grasses, was increasing fiber content, which corresponded to the decreasing digestibility. The highest digestibility reached in the current term in the field of silage ryegrass Lonar and italian rye grass Prolog. The lowest digestibility was observed fescue Proba.
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Study of selected factors influencing maize for silage agronomic attributes
KADOUN, Lukáš
In the years of 2009 and 2010, an observation of chosen quantitative and qualitative measures of several hybrids of corn took place at PS Humpolec and ZD Hosín. Quantitative measures were evaluated based on dissection of individual plants, qualitative measures then through common laboratory methods. In the field experiments at PS Humpolec, an observation of the seeding quantity and nitrogen load took place. The seeding quantity influenced with very high size of effect all agronomical and seed figures, except for the number of rows in the cob, where only high size of effect was observed. The quantity of 85 thousand seeds per hectare seems to be optimal. The nitrogen load influenced with very high size of effect the weight of the cob, with high size of effect the number of cobs and the weight of grains in the cob. Other measures were not affected. The year influenced with very high size of effect the length of the plant, the number of leaves, the weight of the cob; with high size of effect the height of the first cob on the plant and with considerable size of effect the number of cobs on the plant and the length of the cobs. Other observed measures were not affected by the year. Optimal nitrogen load that can be recommended is 110 kilograms per hectare. The best digestibility was noted with 100 thousand seeds per hectare and 110 Kg of nitrogen per hectare, or with 70 thousand seeds per hectare with no nitrogen. In the operational and half-operational experiments at ZD Hosín, differences between chosen hybrids were observed. Based on the results, the best one that can be recommended for these environmental conditions is Karacho, with FAO 260. Hybrid Karacho achieved the highest yield of matter in both years and in the year of 2010 it also achieved the best digestibility.
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