Wyniki wyszukiwania - Biblioteka Nauki

1

Interaction of amino acids with metal and sulphate reduction by Desulfotomaculum ruminis bacteria

100%

Szymanska K. , Domka F.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 1

EN

A simultaneous effect of some amino acids and metals on the activity of Desulfotomaculum ruminis bacteria in the process of microbiological sulphate reduction is studied. It has been established that the simultaneous presence of valine and one of the metals tested (cadmium, chromium or molybdenum) produces a synergetic effect of enhanced inhibitory effect relative to the effect at the presence of only one of these components. Moreover, serine, aspargine and isoleucine have insignificant effect on the desulfurication of sulphates, but the efficiency of this process significantly depends on the presence of metal ions in the medium.

2

Catabolic activity of Bacillus genus bacteria in DDAO-containing media

84%

Brycki B. , Seifert K. , Domka F.

Polish Journal of Environmental Studies

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2005

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tom 14

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nr 4

EN

We studied the effect of N-oxide of N, N-dimethyl-dodecylamine (DDAO) on catabolic activity of the Bacillus genus bacteria involved in the process of denitrificantion. The laboratory tests have proved that the presence of DDAO in concentrations greater than 75 ppm extends the time of nitrate (V) reduction, while the concentration of the intermediate-formed nitrates (III) is inhibited at the level of 80 mg/dm³. Further increase in DDAO concentration, to 10000 ppm, extends the nitrate (V) reduction time to about 115 hours, while the concentration of nitrates (III), formed in the second stage of the reaction, does nor change and remains at a level of 80-100 mg N-NO₂⁻/dm³. The process of denitrification is accompanied by a decrease in COD (biodegradation), whose concentration after completion of the process is 54% in the samples containing 75 ppm DDAO to 31% in the samples containing 10,000 ppm DDAO. Simultaneously, the concentration of proteins decreases from 70% to 30% in the medium containing DDAO in the concentration of 10,000 ppm.

3

Catabolic activity of Desulfotomaculum ruminis bacteria in a medium containing fluorides

84%

Szymanska K. , Domka F. , Wojtowicz T.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr 1

EN

The effect of soluble fluorine species in different concentrations on the catabolic activity of Desulfotomaculum ruminis bacteria has been studied. The fluoride concentrations tolerated by and toxic to the bacteria have been determined. The degree of fluorine species toxicity was found to depend on the form in which fluorine is introduced into the medium and increases in the following order: NaF

4

Catabolic activity of Desulfotomaculum ruminis bacteria in media containing amino acids

84%

Szymanska K. , Rydzewska A. , Domka F.

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nr 5

EN

The influence of the presence of certain amino acids at different concentrations on the catabolic activity of the bacteria Desulfotomaculum ruminis was studied. Introduction of amino acids of the simple chain molecule in concentrations up to 10 g/dm3 in the Starkey media leads to a small decrease of the sulphate conversion degree. A more significant decrease in the reaction rate is observed for amino acids with branched side chains such as valine. Moreover, it was shown that except for the D-asparagine isomer, which is not assimilable by the bacteria Desulfotomaculum ruminis, the other amino acids are a source of assimilable nitrogen. Serine meets the demands of the minimum substrates and is a source of assimilable carbon and nitrogen in the process of bacteria proliferation.

5

Influence of application of (1,3)-(1,6)-β-D-glucans and mannans on production results of sows and piglets

59%

Szuba-Trznadel A. , Rzasa A. , Lira R. , Fuchs B.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2017

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tom 56[2]

EN

Influence of application of (1,3)-(1,6)-β-D-glucans and mannans on production results of sows and piglets. The aim of the study was the assessment the production results and health status of sows and their offspring modulated by supplementation of (1,3)-(1,6)-β-D-glucans and mannans. The experiment was carried out in farrowing and nursing sector.It was performed using crossbreed (Polish Large White × Polish Landrace) pigs. The additive of (1,3)-(1,6)-β-D-glucans (G) or (1,3)-(1,6)-β-D-glucans and mannans (GM) was introduced to the feed for sows from the 85th day of gestation and for their offspring from the 22nd (after weaning) to the 90th (moving to the fattening sector) day of life. Production results were estimated basis on: changes of body weight of sows during lactation and their offspring during the experimental time, average feed intake, feed conversion ratio, mortality. To estimate health status blood samples from sows and their offspring were taken to determine the total protein level and its fraction in serum. The obtained results indicate that the additive of G or GM to lactation sows and weaned piglets can usefully influence on catabolism process in sows, growth performance and health status in piglets.

PL

Wpływ zastosowania (1,3)-(1,6)-Β-d-glukanów i mannanów na wyniki produkcyjne loch i prosiąt. Celem przeprowadzonych badań była ocena wyników produkcyjnych i stanu zdrowia loch i ich potomstwa po dodaniu (1,3)-(1,6)-β-D-glukanów i mannanów do paszy. Eksperyment przeprowadzono na 90 lochach i 331 prosiętach (rasy wbp x pbz). Doświadczenie rozpoczęto w 85. dniu ciąży loch (tj. w momencie rozpoczęcia stosowania mieszanki dla loch karmiących) i kontynuowano go przez okres odchowu prosiąt (tj. do 90. dnia ich życia). Zwierzęta podzielono na trzy grupy. Grupy doświadczalne otrzymywały w mieszankach: β-glukan (G) lub β-glukan z mannanami (GM). Wyniki produkcyjne zostały oszacowane na podstawie: zmian masy ciała macior w trakcie laktacji i ich potomstwa w okresie odchowu, średniego pobrania paszy, zużycia paszy oraz śmiertelności zwierząt. W celu oszacowania stanu zdrowia pobrano próbki krwi od macior i ich potomstwa w celu oznaczenia proteinogramu (białko całkowite oraz jego frakcje: albuminy, α-globuliny, β-globuliny i γ-globuliny). Uzyskane wyniki wskazują, że dodatek G lub GM stosowany w mieszankach dla loch karmiących i prosiąt może korzystnie wpływać na procesy katabolityczne u loch oraz wzrost i zdrowotność u prosiąt.