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Content available Automatyczne linie uboju bydła i trzody chlewnej
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PL
Ubojnie zwierząt rzeźnych od kilku lat zaliczane są do podmiotów, które coraz częściej zgłaszają zapotrzebowanie na rozwiązania z dziedziny automatyki i robotyki. W związku z tym obserwuje się wzrost produkcji urządzeń automatycznych, robotów i integratorów systemów sterujących dostosowanych do pracy w liniach uboju i obróbki poubojowej tusz zwierząt rzeźnych. Automatyzacja i robotyzacja procesów technologicznych wykonywanych na liniach uboju przyczynia się m.in. do: poprawy higieny, zmniejszenia kosztów jednostkowych, zwiększenia produkcji, poprawy efektywności i powtarzalności wykonywanych czynności, skrócenia czasu wykonywania poszczególnych operacji jednostkowych, co istotnie wpływa na jakość surowca. W niniejszej pracy omówiono w pełni zautomatyzowane linie uboju i obróbki poubojowej tusz trzody chlewnej i bydła z jednoczesnym opisem operacji jednostkowych. Podano również typy robotów stosowanych w liniach uboju trzody chlewnej produkowanych przez firmy będące liderami w branży.
EN
Commercial slaughter lines of pigs and cattle have been one of branches that more and more often have demanded automated slaughter lines, automated unit operation and robots for several years. For this reason, there has been observed the growing production of robots, automated slaughter lines and integrating units of control system which fitted to the operation in slaughter lines. The automation and robotics of slaughtering technology contributes to the improved hygiene, reduction of unit costs, production growth, efficiency improvement, repetitiveness of activities and shortening the duration of unit operations. The article discusses full automated slaughter lines of pigs and cattle with a description of unit operation as well as types of robots applied in pig slaughter lines produced by branch leaders.
EN
The aim of the study was to determine the influence of different genotypes on the meat colour of ducks from conservative and breeding strains. Seventy male duck carcasses from seven flocks (Pekin population - type A3, Miniduck - K2, Polish Pekin - P33, Orpinghton fauve - O1, synthetic strain SB, the meat type breeding: P66 - maternal strain, the meat type breeding: A55 - sire strain) were used for comparison (10 ducks from each flock). Birds were slaughtered at the 8th week of age. The investigation of breast muscles included the following aspects: the determination of the colour parameters L* (lightness), a* (redness), b* (yellowness), and ΔE (colour difference); total haem pigment content (THP), including myoglobin (Mb), oxymyoglobin (MbO₂) and metmyoglobin (MMb); sensory evaluation (SE) of the colour intensity of raw muscles on a 10-point scale. The duck muscles from the P66 and P33 flocks were significantly higher in L* (P ≤ 0.01) and lower in a* (P ≤ 0.01) than the others. The lowest value of L* was observed in the muscles from the K2 flock. A significant diversity of colour parameters between breast muscles from different flocks was observed. The pairs of duck muscles from the SB, A55 (ΔE = 0.22) and the P66, P33 (ΔE = 0.61) flocks were the most similar in terms of colour parameters. As regards the total haem pigment content (THP), the examined breast muscles can be divided into two groups. The muscles from the P66, P33 and O1 flocks belong to the group with a lower THP content (3.77, 3.82, and 3.95 mg/g respectively), whereas the muscles from the A55, A3, SB, and K2 flocks had a higher THP content (4.46, 4.63, 4.65 and 4.97 mg/g respectively). The muscles from the A3 and K2 flocks showed a significantly higher Mb content than P66, P33 and O1. The muscles from the P33, P66 and SB flocks had a significantly lower MbO₂ content than the rest (P ≤ 0.01). MbO₂ was predominant in duck muscles. The MMb content was highly diversified and depended on the genotype, ranging from 0.38 mg/g to 1.09 mg/g. The highest MMb content was observed in the muscles from the K2 (P ≤ 0.01) flock but this value did not exceed the level that would render the colour undesirable. The sensory panel defined the colour of breast muscles as pink-red and the surface colour intensity scores ranged from 5.90 to 6.99 CU. The breast muscles from the K2 flock were characterized by the highest intensity of red-pink (6.99 CU). Generally, the duck muscles from the K2, A55, A3 and SB flocks were evaluated as darker (6.99, 6.83, 6.71, 6.51 CU respectively) than the duck muscles from the P66, P33 and O1 flocks (5.90, 5.93, 6.08 CU respectively). The results obtained in our research indicate a large total colour variation of samples within breeds. Colour differences (ΔE) between flocks were within the range of 0.22-5.77. With only a few exceptions, flocks with the ΔE value higher than 2, differed significantly in heam pigment content, L* a*, b* parameters, and sensory panel scores. The conducted research suggests that the genotype has a significant effect on the duck meat colour.
EN
The objective of the research was to determine and compare the cholesterol content and fatty acid (FA) profile of muscles and abdominal fat of 17 week-old geese of Polish, native breeds – Kartuska (KA, n=18) and Lubelska (LU, n=18) maintained at the Research Station of Waterfowl Genetic Resources in Dworzyska, belonging to the National Research Institute of Animal Production in Cracow. The geese were fed ad libitum during the experimental period on the same complete feed. Genotype affected the fatty acids profile as well as fat and cholesterol content of muscles and abdominal fat. The type of muscle (breast or thigh) also influenced the investigated parameters.Lipids of KA muscles were characterized by more favourable level of n-6/n-3 ratio than LU ones.Breast muscles compared to thigh muscles were lower in total fat and monounsaturated FA while higher in cholesterol, saturated and polyunsaturated n-3 fatty acids. The KA geese abdominal fat showed lower percentage of polyunsaturated fatty acids but had more favourable value of n-6/n-3 ratio than the LU ones. Cholesterol content in the KA geese abdominal fat was lower than in LU ones. Overall, the nutritional value of KA muscles lipids and fat tissues were higher in comparison to the LU geese.
EN
The objective of the study was to compare the chemical composition and fatty acid profile of eggs of two-year-old light type ducks: Orpington (O1) and crossbreed ducks Khaki Campbell × Orpington (KhO) as well as Pekin type ducks P9, A1 and A2 from conservative flocks, collected at the onset (the 6th week) of the second laying period. There were no significant differences in the water content (in egg whites and yolks), cholesterol content in yolk lipids and pH value of egg whites in the investigated eggs. The eggs of A1, A2 and P9 contained more (P £ 0.05; 0.01) protein in egg white (11.01%, 10.97% and 10.85% respectively) and yolk (16.34%, 16.26% and 16.24% respectively) than O1 and KhO eggs (10.74% and 16.07% as well as 10.66% and 16.21% respectively). Furthermore the A2 eggs were characterized by the lowest of lipid contents in yolk (27.19% v/s 29.45-30.99%) and pH yolk value (6.27 v/s 6.31-6.40). In P9, A1 and A2 eggs, yolk lipids contained more C 16:0, C 20:5 ω-3 (EPA), C 22:4 ω-6 and C 22:6 ω-3 (DHA) and less CLA 18:2 ω-6 and trans isomer fatty acids (C 16:1 trans-9 and C 18:1 trans-11) than those of O1 and KhO eggs. The unsaturated fatty acids (UFA) were predominant in yolk lipids of eggs for all flocks (69.02%-72.28%). The A1 yolk lipids contained the most UFA, PUFA (19.74%) and SFA (27.41%). A higher concentration of PUFA from ω-6 group was observed in A1 (15.42%) and KhO (15.32%) eggs. Egg yolks collected from P9, A1 and A2 ducks were characterized by a higher level of ω-3 PUFA fatty acids (4.34%, 4.32% and 4.71% respectively) in comparison to KhO and O1 eggs (3.97% and 4.10% respectively). The more favorable ratio of ω-6/ω-3 PUFA was counted for KhO (3.86) and A1 (3.57) eggs, but for the investigated flocks it was close to the recommended values of human diets.
EN
A series of conjugates containing residues of lipophilic alcohols covalently bound to 5'-end of oligodeoxyribonucleotides targeted against human plasminogen activator inhibitor (PAI-1) mRNA was synthesized via the oxathiaphospholane approach. The highest anti-PAI-1 activity in EA.hy 926 endothelial cell cultures was found for conjugates containing menthyl or heptadecanyl groups linked with an oligonucleotide complementary to a segment of human PAI-1 mRNA. The phosphodiester antisense oligonucleotides, which otherwise exhibit only limited anti-PAI-1 activity, were found to be more active than phosphorothioate oligonucleotides when conjugated to lipophilic alcohol residues. For menthyl conjugates an evidence of antisense mechanism of inhibition was found.
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