Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS
Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS
Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS
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1 st WorkshopXIII International Feed Technology SymposiumTable 7. Slaughter results <strong>of</strong> chickens in the experiment12Groupcontrol experimentalCitrus Fennel aroma - 0.03Body weight <strong>of</strong> chickens before slaughtering, g 2350 2536In the comparison at 1 st group, % - + 7.91Slaughter weight <strong>of</strong> chickens, g 1915 2054In the comparison at 1 st group, % - + 7.25Share <strong>of</strong> slaughter weight <strong>of</strong> chickens in the81.4 81.0comparison at live weight, %In the comparison at 1 st group, % - - 0.49Ready to grill roasted, g 1764 1868In the comparison at 1 st group, % - + 5.89Share <strong>of</strong> grill roasted in the comparison at live75.0 74.0weight, %In the comparison at 1 st group, % - - 1.33Drumstick weight, g 606 620In the comparison at 1 st group, % - + 2.31Share <strong>of</strong> drumstick in the comparison at grill34.3 33.2roasted, %In the comparison at 1 st group, % - - 3.21Breast weight, g 519 579In the comparison at 1 st group, % - + 11.56Share <strong>of</strong> breast in the comparison at grill roasted, % 29.4 30.9In the comparison at 1 st group, % - + 5.10Abdominal fat, g 41.4 35.0In the comparison at 1 st group, % - - 15.46There is also stated [8] positive effect <strong>of</strong> XTRACT on appearance <strong>of</strong> chicken carcasses,where breast muscle was by 1.8% - 3.6% higher when XTRACT was added to food, <strong>and</strong>amount <strong>of</strong> abdominal fat was significantly lower when 300 ppm XTRACT was added.Favorable effects <strong>of</strong> plant extracts on chicken <strong>and</strong> geese carcasses were also established[7, 20].Obtained results indicate that by adding <strong>of</strong> Citrus Fennel to the livestock food a positiveeffect on growth <strong>and</strong> utilization <strong>of</strong> nutritious substances is achieved.Modern fast growing hybrids provide necessary nutritious substances through increasedfood consumption <strong>and</strong> its better utilization. Consumption <strong>of</strong> food depends on its edibility<strong>and</strong> taste. There is opinion that the chickens have no sense <strong>of</strong> smell. However, in orderfor animals to experience the sensitivity <strong>of</strong> taste, the source <strong>of</strong> chemical stimulation mustbe in direct contact with sense receptors. Although they are less compared to mammals,they are placed along the mucous membrane <strong>of</strong> the mouth <strong>and</strong> main role in transmission<strong>of</strong> stimulation has the saliva, since because out <strong>of</strong> door taste button is not in muoth area[Kralik et al., 2009]. Plant extracts <strong>and</strong> oils have positive effect on appetite <strong>of</strong> animalsthank to their aromatic ingredients <strong>and</strong> other traits [13, 2].143
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