Results 361 to 370 of about 122,940 (383)

Schistosoma mansoni: Egg Morphology and Hatchability

The Journal of Parasitology, 1989
Schistosoma 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
openaire   +2 more sources

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.
Narushin, Valeriy G., Romanov, Michael N
openaire   +1 more source

Hatchability of Hen Eggs and Lymphomatosis

Nature, 1954
IT 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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Riboflavin increases the hatchability of eggs

Poultry and Chicken Products, 2022
The 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., Rehletskaya Ekaterina K.   +1 more
openaire   +1 more source

Factors Affecting Hatchability

2002
Numerous 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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Feeding for Hatchability

World's Poultry Science Journal, 1948
J. Biely, E. A. Lloyd
openaire   +1 more source

Effects of in ovo injection of chrysin, quercetin and ascorbic acid on hatchability, somatic attributes, hepatic oxidative status and early post‐hatch performance of broiler chicks

Journal of animal physiology and animal nutrition, 2018
F. Khaligh, A. Hassanabadi, H. Nassiri-Moghaddam, A. Golian, G. Kalidari   +4 more
semanticscholar   +1 more source

Effect of two different commercially available white light LED fixtures on broiler hatchability and chick quality

British Poultry Science, 2018
Gregory S. Archer
semanticscholar   +1 more source

Fertility and hatchability.

2008
P. Cherry, T. R. Morris
openaire   +1 more source

Reduced hatchability associated with engine fumes

Veterinary Record, 1989
openaire   +3 more sources