Guinea Fowl, Goose, Turkey, Ostrich, and Emu Eggs

Kokoszyński, Dariusz

doi:10.1016/b978-0-12-800879-9.00004-4

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…Humans generally consume table eggs, but in small quantities, they consume fertile eggs from other poultry species. In recent years consumer interest has increased for quail, pheasant and partridge eggs (Balcioğlu et al, 2009;Garip et al, 2010;Karabag et al, 2010;Burden, 2013;Kokoszyński, 2017). The structure of the egg is similar in various poultry species, but there are differences in the proportions of these parts (Nys and Guyot, 2011).…”

Section: Introductionmentioning

confidence: 99%

Comparison of egg quality, yolk cholesterol and fatty acid contents of chicken, quail, partridge and pheasant eggs

Aygün

Olgun

2019

Akademik Ziraat Dergisi

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This experiment was conducted to compare the cholesterol concentrations of yolk and some internal and external quality chicken, quail, partridge and pheasant eggs. Chickens, quails and partridges are housed in cages and pheasants are housed floor pens. Egg quality traits were determined for 20 eggs per poultry species. Egg weight, egg shape index, eggshell strength, albumen ratio, yolk ratio, yolk index, albumen pH, yolk pH, shell ratio, albumen and yolk color characteristics were examined as egg quality analyzes. Ten eggs from each species were used to determine total cholesterol and triglyceride levels of yolks. The highest egg shape index and eggshell strength values were obtained in the pheasant and chicken eggs. The lowest yolk ratio value was obtained in hen eggs. The shell ratio and yolk index of partridge eggs were higher than the other species. Chicken egg had a lower proportion of cholesterol compared with other species. Partridge eggs have a lighter yolk color than other species. There was no statistically significant difference between the other species in terms of egg yolk cholesterol content, while the lowest egg yolk cholesterol value was detected in chicken eggs.

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Section: Introductionmentioning

confidence: 99%

Comparison of egg quality, yolk cholesterol and fatty acid contents of chicken, quail, partridge and pheasant eggs

Aygün

Olgun

2019

Akademik Ziraat Dergisi

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“…New strategies under development in the contemporary poultry industry involve the implementation of approaches aimed at improving embryo development by enriching feed with polyunsaturated fatty acids, antioxidants, vitamins, and minerals (e.g., [19][20][21]). In particular, high concentrations of such natural antioxidants as vitamins E and A play a significant physiological role in the body of avian embryos by inhibiting the intense peroxidation of lipids in embryonic tissues during the incubation period [22,23].…”

Section: Introductionmentioning

confidence: 99%

Vitamin E and A Availability in Goose Embryos and Goslings and Improvement of Reproduction Traits Depending on the Starting Temperature Regime of Egg Incubation

Іонов

Катеринич

Кuchmistov

et al. 2023

Poultry

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One of the major problems impeding the sustainable development of goose production is low egg hatchability. Thus, it is imperative to develop more efficient ways to improve the hatching qualities of goose eggs. The present study aimed to investigate the effects of changes in the temperature regime of incubation on the availability of vitamins A (retinol) and E (α-tocopherol), as well as important elements of antioxidant protection in embryos and goslings. The initial heating of eggs at temperatures of 39 and 39.5 °C during the first 24 or 36 h was used as the main factor influencing goose embryo development. The dynamics in the content of antioxidant retinol and α-tocopherol were analyzed in the liver of embryos and goslings (up to 9 days of age) using the standard regime of incubation (at 38 °C) and the prior heating of eggs (at 39 °C and 39.5 °C) in the first 24 and 36 h of incubation. The obtained results provided new information about the effect of the initial heating of eggs on the function of antioxidants in the gosling’s body. It was confirmed that the age-related changes of retinol and α-tocopherol levels in goslings are similar to those found in chicks, ducklings, and turkey-poults. In addition, the effect of an egg’s weight on hatchability was established, with the hatchability of eggs in the medium weight class being higher than that of smaller and larger eggs. The efficiency of the redistribution of retinol from the yolk to the liver in day-old goslings was higher by 6% when exposing eggs to a temperature of 39.5 °C for 36 h. The initial heating regime at 39.5 °C led to an increased hatch of goslings, and to the evenness of their hatch from eggs of different weights, approaching the hatch values of the medium class. Overall, the α-tocopherol concentration in the liver of embryos and goslings, using the starting heating of eggs, was higher than that with the standard temperature mode of incubation. At the same time, the hatch rate of goslings increased by 9–13%, and the hatchability of eggs by 10–16%. For use in the practice of hatcheries and breeding poultry farms, it is recommended that goose eggs are heated for 36 h at 39.5 °C.

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“…The average weight of an ostrich egg, at 1600 g, is around 25 times that of a chicken’s, and the shell thickness of an ostrich egg varies from 1.5 mm to 2.2 mm compared to the chicken egg shell, which has a thickness of 0.3 mm to 0.4 mm (Kokoszyński 2017 ). The embryonic development of ostriches is comparable to that of chickens; the incubation period of ostriches is exactly double that of chickens, and any particular stage of ostrich embryonic development can be obtained by reference to the corresponding developmental stage in the chicken embryo (Deeming 1997 ; Brand et al 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Propagation of avian influenza virus in embryonated ostrich eggs

Laleye

Adeyemi

Abolnik

2022

Onderstepoort Journal of Veterinary Research

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Influenza A viruses (IAVs) are typically isolated and cultured by successive passages using 9- to 11-day-old embryonated chicken eggs (ECEs) and in 14-day old ECEs for virus mutational studies. Real-time reverse transcription-polymerase chain reaction tests (RT-PCRs) are commonly used for IAV diagnosis, but virus isolation remains invaluable in terms of its high sensitivity, providing viable isolates for further studies and the ability to distinguish between viable and nonviable virus. Efforts at isolating ostrich-origin IAVs from RT-PCR positive specimens using ECEs have often been unsuccessful, raising the possibility of a species bottleneck, whereby ostrich-adapted IAVs may not readily infect and replicate in ECEs, yet the capacity of an ostrich embryo to support the replication of influenza viruses has not been previously demonstrated. This study describes an optimised method for H5 and H7 subtype IAV isolation and propagation in 28-day old embryonated ostrich eggs (EOEs), the biological equivalent of 14-day old ECEs. The viability of EOEs transported from breeding sites could be maximised by pre-incubating the eggs for 12 to 14 days prior to long-distance transportation. This method applied to studies for ostrich-adapted virus isolation and in ovo studies will enable better understanding of the virus-host interaction in ostriches and the emergence of potentially zoonotic diseases.

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Guinea Fowl, Goose, Turkey, Ostrich, and Emu Eggs

Cited by 10 publications

References 14 publications

Comparison of egg quality, yolk cholesterol and fatty acid contents of chicken, quail, partridge and pheasant eggs

Comparison of egg quality, yolk cholesterol and fatty acid contents of chicken, quail, partridge and pheasant eggs

Vitamin E and A Availability in Goose Embryos and Goslings and Improvement of Reproduction Traits Depending on the Starting Temperature Regime of Egg Incubation

Propagation of avian influenza virus in embryonated ostrich eggs

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