No abstract

the objective of this study was to assess the physicochemical properties of breast and thigh muscles and fatty acid composition of abdominal fat of geese reared at a distance of 50 metres from the wind turbine compared to those reared 460 metres from the wind turbine. the study was carried out on 40 Kołuda White ® geese (Anser anser f. domestica) divided into two groups: treatment 1 -reared at a distance of 50 metres and treatment 2 -reared at a distance of 460 metres from the wind turbine (Vestas V90 wind turbine). the muscles were analysed for ph, thermal loss, shear force, tbars values and colour parameters (l* a* b*). the fatty acids composition of abdominal fat was also analysed. the results of the present study suggest that noise generated by the wind turbine affected the quality of muscles and the fatty acid profile of abdominal fat of geese. The results showed that the muscles of geese reared at a distance of 50 metres from the wind turbine were characterized by higher ph and tbars values compared to those reared at a longer distance from the wind turbine. The significantly lower content of C 18:3 n-3 fatty acid in abdominal fat was observed for geese reared 50 metres from the wind turbine. further studies should be undertaken to establish the safe distance of a wind turbine from livestock buildings.

Wind farms produce electricity without causing air pollution and environmental degradation. Unfortunately, wind turbines are a source of infrasound, which may cause a number of physiological effects, such as an increase in cortisol and catecholamine secretion. The impact of infrasound noise, emitted by wind turbines, on the health of geese and other farm animals has not previously been evaluated. Therefore, the aim of this study was to determine the effect of noise, generated by wind turbines, on the stress parameters (cortisol) and the weight gain of geese kept in surrounding areas. The study consisted of 40 individuals of 5-week-old domestic geese Anser anser f domestica, divided into 2 equal groups. The first experimental gaggle (I) remained within 50 m from turbine and the second one (II) within 500 m. During the 12 weeks of the study, noise measurements were also taken. Weight gain and the concentration of cortisol in blood were assessed and significant differences in both cases were found. Geese from gaggle I gained less weight and had a higher concentration of cortisol in blood, compared to individuals from gaggle II. Lower activity and some disturbing changes in behavior of animals from group I were noted. Results of the study suggest a negative effect of the immediate vicinity of a wind turbine on the stress parameters of geese and their productivity.

The evaluation of herbs introduction to broiler chickens diet was this experiment`s purpose, to improve production effects gained by the poultry and the chemical composition of the final product. The investigation took on 144 twoweek-old broiler chicks, divided into 2 groups, 72 in each. First group was fed full portioned commercial feed without the herbal mix (the control group) and the second (the experimental group) received feed mix enriched by 2.5% dried herb mix. During the experiment the amount of feed consumed by the birds was registered and the body mass of the chickens was determined at the beginning and at the end of the experiment. Thus, obtained information served to determine FCR and EEI. On the last day of the study from each of the groups, were selected 30 birds, they were not fed for 12 hours, then slaughtered and gutted. Obtained carcasses were sectioned. On the sampled breast muscle portions, a chemical composition of the meat has been performed. The results were statistically analyzed. The effect of the herb's addition on the FCR was noted. The FCR was 12.5% lower in birds fed the herb enriched diet in comparing with the birds fed without the herbs added. The influence of the differentiated diet on the chemical composition of the meat was not noted however.