External egg traits like egg length, breadth, shape index, volume and surface area play important roles for egg hatching, embryo growth, and chick survival. 313 fertilized eggs were collected from three genetic lines of Japanese quail named (white, brown, and gray) in four collected ages (57, 64, 71, and 78) days. After collecting the traits were measured by using electronic balance (0.001gm.) sensitivity, and caliper vernier (0.01 mm.). The data show significant differences between some traits and some of them differ with the age of birds and the interaction between the genetic lines and age of collecting eggs. Our results conclude there were significant differences between the three genetic lines on egg external traits and between the collecting age and their infarctions. May its helpful for future studies to establish lines special for egg production, or to make studies on molecular levels.

The current study was done in the hatchery unit/ animal production department/ directorate of agricultural research in Sulaimani province from 28 March – 7 May 2022. Three hundred (300) eggs were used to study the effect of egg shape parameters on the characteristics of hatched chicks. Immediately after collecting the eggs, the eggs were weighted by using electronic balance (0.01 g) sensitive, and the length and Breadth for each egg was measured by using digital caliper vernier with (0.01 mm) sensitive. Our result indicates that the chick color was affected by the egg weight and the egg breadth (P<0.05) but another studied traits was not significantly affected on the characteristics of hatched chicks.

Toxocariasis is a disease of unspecific clinical manifestations in human beings and some animals forming a condition known as visceral larva migerans. Effective Toxocara canis (T. canis) control should destroy the dormant hypobiotic larvae in the tissues of the reservoir hosts. Embyonated egg antigen is intended to be evaluated in rabbits where15 New Zealand rabbits were divided into 3 groups; immunized group that injected with three doses of T. canis egg antigen (First dose with complete Freund's and two successive doses with incomplete Freund’s adjuvant); control infected group and adjuvant control group. At 30th day from the beginning of the experiment, all groups were infected with 10,000 T. canis embryonated egg. Blood samples were collected periodically for measuring antibodies titer by ELISA. Postmortem and histopathological investigations were done. The efficacy of egg antigen protective immunity was evaluated by; the positive antibody titer, retention of larvae in the liver, hepatic eosinophilic granuloma formation, number of the milky spots on the liver surface and lung resistance to the infection. These parameters were detected obviously in the immunized group than the non immunized ones. Consequently, production of this product is recommended where its preparation is simple, easy, fast and economic and may be used as role of vaccine program against the parasite infection in the susceptible hosts.

An egg has been considered as one of the most important food sources because of it's nutritional superiority and reasonable price. With the complexity of egg flow system from production to consumption in Korea, preventive measures for egg safety have been required. Therefore, our study was carried out to analyze hazards for the egg under farm level and develope preventive measures with a purpose of obtaining egg safety. To analyze biological hazards, microbial contamination of egg(normal, dirty and cracked), water, feed, manure and equipments associated with laying were investigated.

For the determination of microbial load, chemical quality, pH and cholesterol level, a total of 400 table eggs were randomly collected from 10 retailers situated at major urban settings in Eastern Ethiopia and Haramaya University Poultry Farm, Ethiopia. The data were analyzed using SAS. High moisture and cholesterol levels and low pH and huge microbial load were detected in the eggs. Exposure of eggs to sunlight in the market and transportation of eggs from farm to the retail market might influence in lowering moisture and increasing pH. Huge microbial contamination of eggs from retailers at urban settings could be due to unhygienic handling of the eggs, lack of standard storage and transportation facilities. Storing of eggs in refrigeration condition and protection of direct sun light could be helpful in maintaining quality eggs. Introduction of refrigeration systems and construction of shades in markets are suggested to maintain and improve quality of eggs sold in markets.