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Unbanded crocodilian eggs do not form an opaque band around their lesser circumference, indicating fertilization failure or early embryonic death. Assuming they represent fertile eggs prior to the onset of embryonic metabolism, the concentration and content of calcium (Ca) and phosphorus (P) in each component (shell, shell membrane, yolk and albumen) of unbanded farm‐laid Nile crocodile (Crocodylus niloticus...
Infertile eggs from Chinese Painted quail exhibit parthenogenesis, and the 1st egg in a clutch sequence is more likely to develop a parthenogenetic embryo. Also, hens that exhibit parthenogenesis have shorter clutches and heavier egg weights. These larger eggs may be a result of the egg residing in the oviduct longer, allowing more time for the parthenote to develop. However, it is unknown which components...
The aim of the study was determination of changes in quality traits of eggs depending on storage conditions. The study material were 360 table eggs laid by 52 weeks of age laying hens, Tetra SL, being in their peak of egg production. The eggs were stored at a temperature of 4 and 23°C. Evaluation of egg quality was carried out on the 1st, 7th, 14th, 21st, and 28th day, analyzing 40 eggs from each...
Along with the storage time, in the egg content there occur changes based of which their quality and condition of egg freshness may be determined. The aim of the study was determination of the effect of 7-week storage period at a temperature of 4°C on the quality of Japanese quail eggs. The eggs were analyzed at one-week intervals to determine their morphological composition. No statistically significant...
Eggs from game pheasants receiving a diet containing 19.0% crude protein and 11.7 MJ ME (control) or 15.0% crude protein and 12.6 MJ ME were studied. Analysis was made of 60 eggs (30 eggs from each group) collected during the 5th week of egg production. Eggs were examined within 24 h of collection. Pheasants receiving the experimental diet laid eggs with lower (P≤0.05) weight (26.3 g), length (42...
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