The use of genetically modified maize in rabbits diets | Použitie geneticky modifikovanej kukurice v dietach králikov
2011
Chrenková, M., Animal Production Research Centre, Nitra (Slovak Republic) | Chrastinová, Ľ., Animal Production Research Centre, Nitra (Slovak Republic) | Lauková, A., Slovak Academy of Sciences, Košice (Slovak Republic). Institute of Animal Physiology | Poláčiková, M., Animal Production Research Centre, Nitra (Slovak Republic) | Formelová, Z., Animal Production Research Centre, Nitra (Slovak Republic) | Plachá, I., Slovak Academy of Sciences, Košice (Slovak Republic). Institute of Animal Physiology | Szabóová, R., Slovak Academy of Sciences, Košice (Slovak Republic). Institute of Animal Physiology | Ondruška, Ľ., Animal Production Research Centre, Nitra (Slovak Republic) | Parkányi, V., Animal Production Research Centre, Nitra (Slovak Republic) | Rafay, J., Animal Production Research Centre, Nitra (Slovak Republic) | Strompfová, V., Slovak Academy of Sciences, Košice (Slovak Republic). Institute of Animal Physiology
The objective of this work was to determine the effect of selected maize varieties in diets on nutrient digestibility and growth performances, biochemical and mineral parameters in blood, characterization of meat quality, physical and chemical characteristics of meat in Musculus longissimus dorsi muscle substance, and caecal fermentation pattern of rabbits. Live weight growth, feed conversion and health of rabbits after feeding complete feed mixtures with 12% proportion of Bt (MON 88017), isogenic maize and reference maize was tested by using 72 broiler rabbits (Hycole). Bt maize deteriorated neither the health of animals nor the production of animal proteins valuable for human nutrition compared with conventional maize. On the basis of our results we can summarize that genetically modified maize in rabbit nutrition did not have a negative influence on the health status of animals. Obtained results demonstrate minimal statistically insignificant differences of individual nutrients utilization and digestibility in tested mixtures. Application of Bt maize and isogenics maize to rabbits did not negatively influence the consumption of feed mixtures per unit of live weight growth. Insignificant differences of selected parameters of nutrients meat quality of the tested animals and on zootechnical parameters were obtained in all experimental groups. The concentration of biochemical and mineral parameters in blood was in the reference range and high value of cholesterol was detected in group with Bt maize. Total volatile fatty acids (VFA) in the caecal content of rabbits and molar concentrations of acetate (P lt 0.01) and propionate (P lt 0.05), however, were significantly higher and concentration of lactic acid lower (P lt0.01) in the group with Bt maize in diet.
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