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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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Chuťové preference králíků při krmení obilovin s různou barvou obilky
Novotný, Jakub
The thesis compares the structure of feed mixture and the feed residues after the feeding broilers rabbits Hyla. There were made two different feed mixtures – the control one and the experimental one. The experimental feed mixture contained 10 % of purple grain wheat called PS Karkulka. In the control one was used 10 % of wheat Vanessa with classical colour of grain. The feed mixtures and the feed residues were separated on different wide sieves to find the size share. Than the feed mixture and the feed residues were compared. The quantity of parts bigger than 2 mm in the feed residues decreased and the quantity of parts smaller than 2 mm increased. Both with statistical significance (P<0.05). To detect the taste preferences between PS Karkulka and Vanessa the parts bigger than 2 mm in both types of feed residues were separated to individual components and compared. There was found that rabbits preferred the colored grained wheat (PS Karkulka) more than the classical one (Vanessa) with statistical significance (P<0.05). The next part is about performance parameters. The weight gain, carcass weight, carcass yield, feed consumption and feed conversation ratio were evaluated. In all of that parameters there were not found statistically significant differences (P˃0.05) between control group and experimental group.
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Využití ostropestřce a konopí ve výživě drůbeže
Šťastník, Ondřej
The aim of this work was to characterize the nutritional value of the milk thistle and hemp by-products and to study their influence on selected performance parameters, metabolism and poultry health by including different doses of these non-traditional feeds into compound feeds. Study of the influence of non-traditional feeds was conceptually divided into four individual experiments. Three experiments were carried out on fattened Ross 308 chickens and one on Bovans Brown laying hens. The addition of milk thistle seed cakes worsend performance parameters of broiler chickens compared to the control group. Benefits of potentially positive biologically active substances have not been prove in chickens. In the experiment with 7% of milk thistle seed cakes in the diet of laying hens led to higher antioxidant activity of the blood and a higher number of eggs with higher weight was achieved while at the same time was higher feed consumption. The Haugh units and millimeter height of the egg was higher, but a thinner egg shell were found in the experimental group. The addition of 5% and 15% of hempseed expellers worsed feed conversion ratio and led to lower weight gain. In the group with addition of 40% hempseed expellers, was found a higher chicken weight gain compared to the control group. In the experiment with 2.5% of hempseed expellers and 1% of hemp herb included to the chickens diet, were found balanced feed consumption and feed conversion ratio. Chickens performance parameters were not affected by experimental treatment.
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Možnosti snížení obsahu dusíkatých látek v krmných směsích pro brojlerová kuřata
Rada, Vojtěch
The aim of the dissertation was to investigate the effect of exogenous protease (EP) in feed mixtures (FM) for broiler chickens with reduced crude protein (CP) content by 4 and 8 % on growth parameters, carcass quality, apparent ileal digestibility of amino acids and protease activity in the jejunum of broiler chickens. At the same time, the effect of EP on the given parameters was investigated at the increased level of rape seed meal (RSM) in FM. The addition of EP to KS with a 4% reduction in CP did not have a statistically significant (P> 0,05) effect on growth, conversion and feed intake, quality of carcass, nor on the apparent ileal digestibility of amino acids and protease activity in jejunum of the broiler chicken. Higher content of RSM in FM with a 4% CP reduction negatively (P <0.05) affected the protease activity in the jejunum. The addition of EP into FM with an 8% CP reduction statistically (P <0.05) increased the average live weight of broilers on the 17th and 24th day of the age. At a higher age, EP has not influenced on the live weight of broilers and the overall feed conversion. Females chickens consumed FM with 8% CP reduction had a significantly lower (P <0.05) weight of breast muscle and carcass value. Adding protease to FM with an 8% CP reduction statistically significantly (P <0.001) decreased the digestibility of Pro and Tyr (P <0.05). The EP had no significant (P> 0.05) effect on protease activity in the jejunum of broilers with FM intake with an 8% CP reduction. Higher content of RSM in FM with an 8% CP reduction significantly decreased (P <0.05) apparent ileal digestibility of Pro and significanlty (P <0.05) increased protease activity in broilers jejunum.
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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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The adjustment of the feed ration for laying hens in order to improve the strength and the hardness of eggshells
HEINDL, Jakub
This major thesis expands the issue of the bachelor thesis "The issue of raising laying hens considering on introduction of enriched cages" and adds new knowledge relating to the topic feed rations and their influence on the final production. The theoretical part of the thesis analyses the basic theoretical concepts cohering with this topic, focused on creating a comprehensive overview of the structure and quality of the eggs, the basic ingredients in the feed rations, qualitative parameters of grapes as the modified additive provided by us and last but not least there is processed the recent overview of the current state of large-scale farmers in the Czech republic. The practical part of the thesis aims to test the effect of the proposed feed with an additive in the form of the crushed grape seeds, on the strength of the eggshell, by homogeneous samples of the breeds through from us proposed measuring instrument. Subsequently, a statistical evaluation of measured results is realized. In conclusion, the consideration is extended to the economic evaluation of costs and profits in case of the implementation of the suggested feed ration into practice in order to quantify the difference compared to the commonly used feed ration.
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Controlling
Igrényi, Réka ; Mikovcová, Hana (advisor) ; Boráros, Attila (referee)
The aim of this Master's thesis was to characterize the current cost ratio, pricing system and profitability of an agricultural firm, called P.G.TRADE, spol s r.o.. This company is engaged in the production and sale of compound feeds and premixes, resp. in storing different kinds of agricultural commodities. My specific aim was to determine whether the current pricing system and prices cover all the costs which incurred because of the processes of production and sale of finished products and that in doing so provides a satisfactory level of profitability, too. In the first, methodological part, I summarized all the necessary theoretical knowledge that we need to know about controlling. I paid particularly big attention to calculations and budgeting. In the application part I focused on the characteristics of the company itself and on the analysis of the costs and of the pricing system. In the next part I described in details the manufacturing processes of compound feeds and premixes in the company's main factory in Dvory nad Žitavou. The last part is devoted to the calculation of production costs and identifying weaknesses. In addition to the description of the conclusions I tried to propose some measures that could help in improving the company's profitability.
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