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Retence fosforu krmiva v chovu ryb
Malý, Ondřej
The aim of this study was observed the digestibility of diet phosphorus in fishfeed for carp (Cyprinus carpio). Observation of phosphorus digestibility is important factor for fishery in terms of environmental pollution and reduction of feed costs. Sixty carps were divided into three groups. Control diet and two experimental diets were used in this study. The basic of each diet was granulated mixture KP1. Digestibility of phosphorus in experimental diets was supported by the addition of microbial phytase OptiPhos5000 CT. Content of phytase was 500 FTU in first experimental diet (F500) and 1000 FTU in second experimental diet (F1000). Indicator method was used for determination of phosphorus digestibility. Fiber was used as indicator. Excreta of carps were collected for twelve days. Phosphorus digestibility of control group was 63.9%. There was found lower phosphorus digestibility (62.6%) in the group fed diet with phytase 500 FTU. In the group fed diet with the largest content of phytase (1000 FTU) was observed 62.2% of phosphorus digestibility. According to the obtained results it can be concluded that the addition of phytase did not affect the digestibility of phosphorus. The reason for these results could be improperly chosen of method.
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Stravitelnost aminokyselin u kuřat chovaných na maso
Foltyn, Marian
The aim of the work was to determine the effect of substitution of soybean meal (SBM) in the grower diets for broilers with other protein feeds of plant origine. It was study the influence of substitution on growth performance and feed conversion ratio, digestibility of amino acids, activity of digestive enzymes and morphology of small intestine. Protein feeds were chosen raw full fat soybean (RFFSB), extruded full fat soybean (EFFSB), corn DDGS, rapeseed (RS) and rapeseed meal (RSM). Based on our observation it can be concluded, that inclusion of RFFSB up to 8 % level, EFFSB up to 12 % level, DDGS up to 18 % level and RS up to 12 % level did not statistically significantly (P>0.05) negatively affect the yields in fed broilers. Feeding RFFSB and EFFSB influenced (P>0.05) the ileus morphology and activity of digestive enzymes. On the basis of digestibility coefficients, the most appropriate proteinous feed for broilers was SBM, which was comparable to EFFSB.
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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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