Andmebaasi logo

Sirvi Autor "Kamberi, M.A." järgi

Nüüd näidatakse 1 - 2 2
  • Pisipilt
    Kirje
    Changes related to storage conditions in the quality of quail eggs of different sizes
    (Estonian University of Life Sciences, 2026) Kryeziu, A.J.; Ramadani, X.; Kamberi, M.A.
    This study assesses the impact of storage temperature – ST (4–6 °C and 20–22 °C), storage duration – SD (7, 14, 21, and 28 days), and egg weight group – EWG (A ≤ 10, B = 10.01–11.00, C = 11.01–12.00, D = 12.01–13.00 gram) on the EWL as well as quality attributes of 400 quail eggs. Various parameters were assessed, including egg weight loss (EWL), external quality attributes: egg weight (EW), egg shape index (ESI), eggshell weight (ESW) and eggshell thickness (EST), and internal characteristics: albumen weight (AW), albumen index AI, albumen pH (ApH), Haugh unit (HU), yolk weight (YW), yolk index (YI), yolk pH (YpH), yolk color (YC) and yolk/albumen ratio (Y/A). This comprehensive analysis aimed to provide a thorough understanding of the eggs' physical and internal qualities. The data obtained was analyzed using JMP IN 7, revealing impacts of ST, SD, and EWG on quail eggs quality (P <0.05). The storage temperature parameters not only demonstrated statistically significant differences in AW (P < 0.05) but also in YI, and YpH (P <0.05). Parameters such as AI, YW, ESW, EST, ESI, Y/A, YC, HU, and YpH did not reflect statistically significant differences by ST (P > 0.05). SD had significant impact on AW, AI, ApH, HU, YW, YR, YI, Y/W, YC and YpH (P <0.05). Changes in AW, AI, YW and HU were observed based on EWG (P < 0.05). Furthermore, significant effects (P < 0.05) were found for interactions between ST×SD×EWG on EWL, AW, YW, and Y/A. This research is focused on providing a comprehensive overview of storage conditions, necessary to maintain quality eggs.
  • Pisipilt
    Kirje
    The excretion of Ca, Mg, Zn and Cu via excreta of laying hens fed low phosphorus diets and phytase
    (2018) Kamberi, M.A.; Muji, S.; Kryeziu, A.; Kastrati, R.; Mestani, N.
    An 8 – week experiment was conducted to study the effect of adding phytase (Natuphos ® 5000 BASF) to low and normal available phosph orus diets of laying hens on the excreta content and excretion of Ca, Mg, Zn and Cu. A total of 144 Hisex Brown laying hens that were 22 weeks old at the start of the experiment were randomly assigned to four dietary treatments. Treatments included three r eplicates (12 hens each) or 36 hens per treatment in total. Four corn - soybean meal - based diets were formulated to contain two levels of available phosphorus (AP; 0.12 and 0.46%) and two phytase levels (0 and 600 FTU kg – 1 ). The results showed that there was no significant effect of added phytase on excreta Ca and Mg content ( P > 0.05), but there was a significant effect of the dietary treatment on the content of Zn ( P = 0.0075) and Cu ( P = 0.0002). In terms of the excretion of these mine rals, the dietary treatment had no effect on Ca and Zn excretion and a borderline effect ( P = 0.0522) on Mg excretion measured as the amount of the mineral excreted per egg mass produced is observed. The results however showed a very strong effect of all three factors (available phosphorus, phytase and their interaction) on Cu excretion. The r esults indicate that adding 600 FTU to the corn - soybean meal laying hen diet with 0.12% or 0.46% AP beneficially affects the content and the excretion of Ca, Mg, Zn and Cu. Therefore, we can conclude that a laying hen diet containing 0.12% available phosphorus and 600 FTU during the first production cycle may not only satisfactorily support hens’ perf ormance but will also beneficially affect the environment.