The aim of this research was to study S-ovalbumin as a reference index for the freshness of commercial shell eggs in terms of equivalent egg age. The S-ovalbumin content, yolk index, albumen pH, and Haugh units were determined at the storage temperature of 25 and 37°C, respectively, using 85 fresh-laid eggs. A correlation analysis showed a high correlation coefficient of S-ovalbumin content to ...

Resting gastric juice and extracts of uninvaded gastric mucosa from the stomachs of patients with gastric adenocarcinomata digest plasma protein with either two or three maxima below pH 5. Egg albumen is digested with one or two maxima below pH 5, for the maximum found near pH 3.5 with plasma protein is absent. These properties do not differ significantly from those described in normal subjects...

Egg storage beyond 7 d is associated with an increase in incubation duration and a decrease in hatchability and chick quality. Negative effects of prolonged egg storage may be caused by changes in the embryo, by changes in egg characteristics, or by both. An adjustment in storage air composition may reduce negative effects of prolonged egg storage because it may prevent changes in the embryo an...

The relationship between protein changes and egg quality during storage is a critical area of investigation in both basic science product preservation. Viscosity albumen are sensitive sign the deterioration process. Ovomucin, which present albumen, plays an important role gelation albumen. Egg freshness indices ovomucin concentration will alter response to time. This paper analyzed correlation ...

The effect of long-term genetic selection on physical quality and composition of eggs was determined by analyzing eggs acquired from Agriculture Canada: Ottawa Control Strain 5 (CS5) from a 1950 base population, 7 (CS7) from a 1958 population and 10 (CS10) from a 1972 population. Eggs from the H&N “Nick Chick” current commercial strain (CCS) were also included. Eggs were collected monthly over ...

Recent results have shown that hypercapnia during early stages of embryonic development alters several parameters related to embryonic growth and hatching. In these experiments, we wanted to investigate how external CO2 concentrations in the incubator can be sensed by the internal environment of the egg itself. Cobb eggs of a flock of 37 weeks of age were used for incubation under different CO2...

Background and Aim: The exchange of oxygen carbon dioxide (CO2) in the incubator plays a key role embryonic development hatching. This study aimed to effect non-ventilated (NV) intervals during early stage on hatching process. Materials Methods: Hatching eggs (n = 7200) were equally divided into four treatment groups incubated incubators. first group was normal ventilated condition (V) setting ...