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The effect of cereal by-product dietary fibre on the serum lipid profile and short-chain fatty acid concentration in caecal digesta of rats

100%

Furgal-Dzierzuk I.

nr 1

The effect of sodium butyrate on calf growth and serum level of beta-hydroxybutyric acid

51%

Slusarczyk K. , Strzetelski J. A. , Furgal-Dzierzuk I.

nr 3

The experiment was carried out on 40 Polish Black-and-White HF bull calves (52-87% of HF blood) aged from 9 and 12 days at the beginning of the experiment to 90 days at its end. From the beginning of the trial the calves were offered restricted liquid feed to 56 days of age and concentrates ad libitum according to IZ-PIB-INRA recommendations. The concentrates were without sodium butyrate (control group, C), or with 1% Na-butyrate (group B1), 3% Na-butyrate (group B3) and 0.3% Na-butyrate (group B0.3), and included meadow hay from 0.10 kg/day during the liquid feeding period to 0.20 kg/day after weaning at 57 days of age. Na-butyrate at 3% in the diet reduced feed intake and had a beneficial effect on calf growth and nutrient utilization. The dietary level of Na-butyrate did not cause significant changes in serum β-hydroxybutyric acid concentration of the calves.

The effect of genetically modified maize (MON 810) and soyabean meal (Roundup Ready) on rearing performance and transfer of transgenic DNA to calf tissues

32%

Furgal-Dzierzuk I. , Strzetelski J. , Kwiatek K. , Twardowska M. , Mazur M. , Sieradzki Z. , Kozaczynski W. , Reichert M.

tom 23

nr 1

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 results of histological examination of calf organs and tissues. In the experiment, forty Polish Black-and-White HF bulls aged 10 days were allocated to 4 groups fed non-modified (traditional) maize and soyabean meal (group TMG/TS), non-modified maize and GM soyabean (group TMG/MS), GM maize and non-modified soyabean meal (group MMG/TS), or GM maize and GM soyabean meal (group MMG/MS). The experiment was terminated at the age of 90 days. Calves were housed in individual pens and fed ad libitum diets with balanced energy and protein according to the IZ-INRA (2009) system. All mixtures contained similar amounts (%) of maize (56), soyabean meal (25), oat (15), premix and limestone (1). There were no major differences in the feed value of Bt maize and RR soyabean meal and their non-modified isogenic counterparts and feed mixtures. There were no effects of GM components on final liveweight, average daily weight gain, MT chemical composition, or fatty-acid profile of intramuscular fat. The calf rumen fluid contained tDNA, but there was no tDNA in the intestinal content, blood, studied organs, or meat. Histological examination of the investigated organs and muscles found no differences among treatments.

Histopathology of internal organs of farm animals fed genetically modified corn and soybean meal

26%

Reichert M. , Kozaczynski W. , Karpinska T. A. , Bocian L. , Jasik A. , Kycko A. , Swiatkiewicz M. , Swiatkiewicz S. , Furgal-Dzierzuk I. , Arczewska-Wlosek A. , Strzetelski J. , Kwiatek K.

2012

tom 56

nr 4

Histopathological examination of liver, kidney, spleen, pancreas, duodenum, jejunum, skeletal muscle, and bursa of Fabricius samples, collected from broiler chickens, laying hens, fattening pigs, and calves fed genetically modified corn MON 810 and soybean meal MON-40-3-2 (Roundup Ready, RR), was performed. The examination showed no significant differences between the control animals fed diets containing no genetically modified feeds and animals fed genetically modified feeds. In some cases, congestion of parenchyma and focal lymphoid cell infiltrations were observed in all dietary groups, including controls, and therefore, it was assumed that the lesions were not associated with the feeding transgenic feeds.

Rezultaty krajowych badań nad bezpieczeństwem pasz genetycznie zmodyfikowanych w żywieniu zwierząt gospodarskich

23%

Swiatkiewicz S. , Szymczyk B. , Swiatkiewicz M. , Arczewska-Wlosek A. , Strzetelski J. , Brzoska F. , Furgal-Dzierzuk I. , Twardowska M. , Markowski J. , Mazur M. , Sieradzki Z. , Pejsak Z. , Tomczyk G. , Minta Z. , Bednarek D. , Kozaczynski W. , Reichert M. , Kwiatek K.

nr 1