منابع مشابه
Commercially laid eggs vs. discarded hatching eggs: contamination by Salmonella spp
Salmonella enterica is frequently associated with outbreaks of human salmonellosis, and products of avian origin, such as eggs and chicken meat, are the main vehicles of its transmission. The present study describes the occurrence of different serovars of Salmonella enterica and phagotypes of S. enterica serovar Enteritidis in eggs destined for human consumption. Four thousand eggs obtained fro...
متن کاملDinosaur origin of egg color: oviraptors laid blue-green eggs
Protoporphyrin (PP) and biliverdin (BV) give rise to the enormous diversity in avian egg coloration. Egg color serves several ecological purposes, including post-mating signaling and camouflage. Egg camouflage represents a major character of open-nesting birds which accomplish protection of their unhatched offspring against visually oriented predators by cryptic egg coloration. Cryptic colorati...
متن کاملNeuroethology: Lemon-Fresh Scent Makes Flies Lay Eggs
A new study reveals how Drosophila uses their sense of smell to decide on where to lay their eggs. These results have exciting implications for the evolution of fruit preference and parasitoid avoidance in fruit flies.
متن کاملRelating quality characteristics of aged eggs and fresh eggs to vitelline membrane strength as determined by a texture analyzer.
The TA-XT21 texture analyzer (TA) was used to evaluate vitelline membrane strength (VMS). Fresh and aged (1 wk at 25 C) eggs (n = 48 eggs x 2 replications) were evaluated. Fresh and aged eggs were further divided into two groups of yolk only or whole egg (with intact albumen). Yolk index, Haugh units, pH, broken-out egg weights, VMS, yolk viscosity, and scanning electron microscopy (SEM) images...
متن کاملYolk and albumen corticosterone concentrations in eggs laid by white versus brown caged laying hens.
Maternal stress in birds can have permanent transgenerational effects through the transmission of stress hormones to offspring via the egg yolk. Previous studies have shown that White Leghorn hens show a heightened response to stress compared with Hy-Line Brown hens, producing significantly more corticosterone and displaying longer bouts of tonic immobility after handling, whereas baseline leve...
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ژورنال
عنوان ژورنال: The Lancet
سال: 1900
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(01)99792-2