Global variation and uniformity of eggshell thickness for chicken eggs

The effect of eggshell thickness on hatchability of quail eggs

BACKGROUND AND AIM The aim of the successful incubation period is to achieve maximum health chicks in each batch. Therefore, all factors affecting incubation have to be investigated in detail. This study investigated the effect of eggshell thickness on hatchability of quail eggs. MATERIALS AND METHODS A total of 1415 eggs were collected from the same flock at the ages of 23 and 41 weeks. Two ...

On eggs and chicken.

Insight into the relationship between early childhood infections and subsequent development of asthma has long been troubled by the failure to recognise the heterogeneity of "asthma" or recurrent wheeze in childhood. In the last decade, the concept of two or more wheezing phenotypes of childhood asthma has evolved. At the one end of the spectrum, there are children who develop recurrent wheeze ...

Intraclutch eggshell colour variation in birds: are females able to identify their eggs individually?

BACKGROUND One possibility suggested regarding female post-mating strategies is differential allocation into offspring investment. Female birds produce not only the largest, but also most colourful eggs of all oviparous taxa. Larger eggs provide space for bigger embryos, or more nutrition for their development, but the question why eggs are more colourful and why there is variation in eggshell ...

Optimum Harvesting Time of S.P.F. Embryonated Chicken Eggs for Preparation of Infectious 8ronchitis Vaccine

of glycosaminoglycans in chicken eggs

Glycosaminoglycans (GAGs) have numerous applications in the fields of pharmaceuticals, cosmetics, nutraceuticals, and foods. GAGs are also critically important in the developmental biology of all multicellular animals. GAGs were isolated from chicken egg components including yolk, thick egg white, thin egg white, membrane, calcified shell matrix supernatant, and shell matrix deposit. Disacchari...