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Egg physical characteristics and hatchability [PDF]
World's Poultry Science Journal, 2002 The physical characteristics of the egg play an important role in the processes of embryo development and successful hatching. The most influential egg parameters are: weight, shell thickness and porosity, shape index, described as maximum breadth to length ratio, and the consistency of the contents.
M N Romanov
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Hatchability of Hen Eggs and Lymphomatosis
Nature, 1954IT is widely accepted that poor hatchability is one of the main causes of financial loss to poultry breeders. Judging from the results regularly reported by many large hatcheries, the national hatching-rate of all eggs set in Great Britain seems to be between 65 and 70 per cent.
R, COLES, F R, UNDERWOOD
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Influence of prestorage incubation on embryonic development, hatchability, and chick quality
Poultry Science, 2009 Egg storage longer than 7 d is associated with a delay in hatch time and a decline in hatchability and chick quality. Prestorage incubation is suggested as a method to reduce the negative effects of prolonged storage times by altering the developmental ...
Henry van den Brand, R Meijerhof
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Schistosoma mansoni: Egg Morphology and Hatchability
The Journal of Parasitology, 1989Schistosoma mansoni eggs were isolated and staged microscopically according to size. The eggs were then allowed to hatch and were reexamined; the hatching percentage of mature eggs was calculated. The results show clearly that not only do immature eggs not hatch, but also mature eggs greater than 160 microns fail to hatch.
Y Z, Xu, M H, Dresden
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Effects of ethylnitrosourea on the hatchability and survival of chicks
British Poultry Science, 19811. Two experiments were carried out to study the effects of the mutagen ethylnitrosourea (ENU) at concentrations of 1.4 to 3 500 microgram in 0.3 ml of saline (experiment 1) and 585 to 1 170 microgram in 0.1 ml of saline (experiment 2) on hatching eggs of two breeds of fowls.
E, Petrovský +3 more
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Riboflavin increases the hatchability of eggs
Poultry and Chicken Products, 2022The study of the possibility of introducing biologically active substances into an incubation egg is an urgent task today. According to the results of a study conducted on eggs of quails of the Omsk breed it was found that the aerosol treatment of eggs on the 13.5 day of incubation with 0.03% riboflavin solution allows to increase the hatchability of ...
Kolokolnikova Tatiana N. +1 more
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The Journal of Agricultural Science, 1961
Eggs were incubated at various frequencies of turning (tilting through 90°) and their hatchability compared with eggs incubated as controls at 24 turns per day evenly distributed throughout the 24 hr. The turning treatments were: 0, once in 2 days, 2, 6, 12, 48, 96, 144, 192 and 480 turns per day.Differences in hatch of fertile eggs between the treated
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Eggs were incubated at various frequencies of turning (tilting through 90°) and their hatchability compared with eggs incubated as controls at 24 turns per day evenly distributed throughout the 24 hr. The turning treatments were: 0, once in 2 days, 2, 6, 12, 48, 96, 144, 192 and 480 turns per day.Differences in hatch of fertile eggs between the treated
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Factors Affecting Hatchability
2002Numerous factors have pronounced influence on the hatchability of chicken eggs. Many of these are important long before the eggs are placed in the incubator. For example, breeder flock health, nutrition, breed, age of breeders, and breeder flock management can result in tremendous variation in hatchability.
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