Contactless in ovo sex determination of chicken eggs

Galli, Roberta; Koch, Edmund; Preuße, Grit; Schnabel, Christian; Bartels, Thomas; Krautwald‐Junghanns, Maria‐Elisabeth; Steiner, Gerald

doi:10.1515/cdbme-2017-0027

Cited by 14 publications

(16 citation statements)

References 7 publications

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“…The increasing specialization of chicken lines for meat and egg production has made male and female chicks are used for broiler and layer strains, respectively ( Galli et al., 2017 ). More than 7.0 billion freshly hatched cockerels with unwanted gender, therefore, were culled globally annually, especially for male day-old chicks in commercial hatcheries ( Alin et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

“…More than 7.0 billion freshly hatched cockerels with unwanted gender, therefore, were culled globally annually, especially for male day-old chicks in commercial hatcheries ( Alin et al., 2019 ). Which not only cause significant economic losses but also raise serious ethical issues ( Galli et al., 2017 ). Under these pressure, there is urgent need for new techniques of sex determination “in ovo” during early of incubation ( Galli et al., 2017 , 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Xiang¹,

gan²,

Jin³

et al. 2022

Poultry Science

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It's a difficult task for researchers to identify the gender of chicken eggs by nondestructive approach in the early of incubation, which not only could reduce the cost of incubation, but also could improve the welfare of chicks. Therefore, SPME/GC-MS has been applied to investigate its potential as a nondestructive tool for characterizing the differences of odor between male and female chicken eggs during early of incubation and even before hatch. The results showed that more volatiles were found in female White leghorn eggs during early of incubation and 6,10-dimethyl-5,9-undecadien-2-one, 6-methyl-5-hepten-2-one, nonanal, decanal, octanal, 2-nonen-1-ol, etc. were important for the distinction of male and female White leghorn eggs during E 1 -E 9 of incubation. 2-ethyl-1-hexanol; octanal, nonanal, 2,2,4-trimethyl-3-carboxyisopropyl pentanoic acid isobutyl ester; 2-nonen-1-ol, cyclopropanecarboxamide, heptadecane were correlated with gender of unhatched White leghorn, Hy-line brown and Jing fen eggs, respectively. Moreover, sex-related volatiles have been strongly influenced by incubation process and egg breed, and to be related to steroid hormone biosynthesis. What's more, this study enables us to develop a new visual for ovo sexing of chicken eggs and advances our understanding of the biological significance behind volatiles emitted from chicken eggs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Xiang¹,

gan²,

Jin³

et al. 2022

Poultry Science

View full text Add to dashboard Cite

show abstract

“…Another technique of in-ovo sex determination is by optical imaging methods (3) such as reflectance (21), infrared (22), and Raman spectroscopy (23)(24)(25)(26). By penetrating the egg with a CO 2 laser and using spectroscopy on the embryo, the sex of the embryo can be determined based on different absorption spectra (3).…”

Section: Introductionmentioning

confidence: 99%

“…For these optical imaging methods to assess sex, the eggshell needs to be opened, which is a risky avenue as the dimension of the hole in the eggshell reduces hatching rate (23). Through the hole in the eggshell, near-infrared fluorescence can identify the sex of the embryo [for details, see (24)(25)(26)]. These imaging techniques are preferred over assessing biomarkers from the allantoic fluid due to their low risk of contamination, being contact free and fast, and can be made automatic.…”

Section: Introductionmentioning

confidence: 99%

The Need for an Alternative to Culling Day-Old Male Layer Chicks: A Survey on Awareness, Alternatives, and the Willingness to Pay for Alternatives in a Selected Population of Dutch Citizens

2021

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A concerning by-product of producing laying hen chicks are the hatched male layer chicks. As a consequence of their inability to lay eggs, these male chicks are culled as day-old chicks in the hatchery. To find an alternative for this ethical dilemma (generally), three alternatives are under study, namely, in ovo sex determination, using dual-purpose breeds, and the rearing of layer cockerels. In order to assess the awareness of this practice and preference for one of the alternatives, we conducted an online survey of the Dutch public. Most of the 259 respondents completing the survey were highly educated woman (HEW, n = 143) versus others (REST, n = 86). The questionnaire was divided into six topics: (1) general knowledge of the poultry industry, (2) awareness of culling male layer chicks (CMC), and (3) its acceptability, (4) alternatives to CMC, (5) willingness to pay (WTP) for eggs without CMC, and (6) WTP for cockerel meat. Awareness about CMC was 52%, and its acceptability was rejected by 78% (HEW) and 67% (REST). The level of acceptability increased when more salient facts were given, and almost all respondents agreed that an alternative was needed (90% HEW, 84% REST). For both groups of respondents, more than 50% preferred in ovo sex determination over keeping the current practice or using dual-purpose breeds or male layers. Furthermore, the majority of respondents were willing to pay more than double the price for eggs without CMC being involved. Roughly 40% would not buy processed cockerel meat burgers, most likely due to their vegan or vegetarian diet. Of the remaining respondents, half were willing to pay the current price or 1 euro more for processed cockerel meat burgers. The most important factors when buying poultry meat or eggs without CMC were food safety, animal friendliness (welfare), and the environment; price was the least important factor. Despite the skewed respondents' background, the results of our survey show that consumers are willing to pay more for poultry products that do not require culling day-old male chicks.

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“…In ovo Raman and fluorescence spectroscopy of blood of eggs incubated until day 3.5 enables correct sexing rates over 90/100 barely affecting the hatching rate. Full automatization of the processes to guarantee high sexing speed and fulfill industrial demands is needed to permit transferring the technology inside the hatcheries in the next future [5].…”

Section: Introductionmentioning

confidence: 99%

In Ovo Sexing of Chicken Eggs by Virus Spectroscopy

Fioranelli¹,

Sepehri²,

Roccia³

et al. 2019

Open Access Maced J Med Sci

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Recently, some new methods for sexing of chicken eggs by fluorescence and Raman spectroscopy through the shell membrane have been proposed. On the other hand, in another investigation, a new virus medical imaging has been suggested. In this research, summing over these considerations, a new technique for sexing of chicken eggs by virus spectroscopy through the shell membrane is proposed. It is shown that viruses outside the shell of egg can communicate with materials inside it and determine the gender of chick embryo and it’s evolutions.

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Contactless in ovo sex determination of chicken eggs

Cited by 14 publications

References 7 publications

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

The Need for an Alternative to Culling Day-Old Male Layer Chicks: A Survey on Awareness, Alternatives, and the Willingness to Pay for Alternatives in a Selected Population of Dutch Citizens

In Ovo Sexing of Chicken Eggs by Virus Spectroscopy

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