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The experiment was performed to determine whether transgenic maize containing the Bt gene (MON 810) and soyabean meal produced from glyphosate-tolerant plants (Roundup Ready, MON 40-3-2) compared with nontransgenic plants can affect the performance parameters, milk composition, blood serum metabolite profiles and transfer of tDNA into milk of cows. The experiment was carried out from the third week...
The experiment was performed to determine whether genetically modified maize (MON 810) and soyabean meal (Roundup Ready, MON 40-3-2) used as the main source of feed in a concentrate can affect the performance parameters, basal chemical composition of the musculus thoracis (MT), fatty-acid composition of intramuscular fat, and transfer of transgenic DNA (tDNA) to calf tissues, as well as affect the...
Eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids are long-chain n-3 polyunsaturated fatty acids that are essential for human health. They play an important role in prevention of heart disease and some cancers. The richest source of EPA and DHA are fish and marine products, but in Poland the consumption of fish is slightly declining. Milk enriched with EPA and DHA could be an alternative and...
The aim of the study was to evaluate the immune effects of genetically modified (GM), insect resistant corn (MON810) expressing toxin protein of Bacillus thuringiensis, and glyphosate-tolerant soybean meal (Roundup Ready MON-40-30-2), which are used as the feed mixture components in domestic animals. The study was conducted on 60 pigs (36 fatteners and 24 sows), 20 calves, 40 broilers, and 40 laying...
In the article, the results of Polish studies on safety of use of genetically modified (GM) feed materials, employed in animal nutrition, were presented. In the experiments, Roundup Ready (RR) soybean meal, modified for glyphosphate (active ingredient of herbicides) and corn Bt (MON 810), modified for resistance to the European corn borer were examined. The experiments were carried out on broiler...
The aim of the study was to evaluate the effect of replacing cereal grains and soyabean oilmeal with rapeseed cake or glycerine in the rations of high-yielding cows. The experiment was carried out on 56 Polish HF cows allotted to 4 groups of 14 animals according to body weight, milk yield, and parity. The cows were fed rations differing in protein and energy content from 6 weeks before calving to...
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