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Review Article

Stop culling male layer-type chick: an overview of the alternatives and public perspective

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References

  • Aleksandrowicz, E., and I. Herr. 2015. “Ethical Euthanasia and Short-Term Anesthesia of the Chick Embryo.” ALTEX 32 (2): 143–147. https://doi.org/10.14573/altex.1410031.
  • Alin, K., S. Fujitani, A. Kashimori, T. Suzuki, Y. Ogawa, and N. Kondo. 2019. “Non-Invasive Broiler Chick Embryo Sexing Based on Opacity Value of Incubated Eggs.” Computers and Electronics in Agriculture 158: 30–35. https://doi.org/10.1016/j.compag.2019.01.029.
  • Arruda, M. D., V. I. Lyamichev, P. S. Eis, W. Iszczyszyn, R. W. Kwiatkowski, S. M. Law, and M. C. O. A. E. B. Rasmussen. 2002. “Invader Technology for DNA and RNA Analysis: Principles and Applications.” Expert Review of Molecular Diagnostics 2 (5): 487–496. https://doi.org/10.1586/14737159.2.5.487.
  • Augère-Granier, M.-L. 2019. The EU Poultry Meat and Egg Sector: Main Features, Challenges and Prospects. European Parliamentary Research Service. https://policycommons.net/artifacts/1337506/the-eu-poultry-meat-and-egg-sector/1945404/.
  • Becker, S., W. Büscher, and I. Tiemann. 2023. “The British Ixworth: Individual Growth and Egg Production of a Purebred Dual-Purpose Chicken.” British Poultry Science 1–11. in print. https://doi.org/10.1080/00071668.2023.2246142.
  • Bell, A. 2018. “The Neurobiology of Acute Pain.” The Veterinary Journal 237: 55–62. https://doi.org/10.1016/j.tvjl.2018.05.004.
  • Bellieni, C. V. 2019. “New Insights into Fetal Pain.” Seminars in Fetal and Neonatal Medicine 24 (4): 101001. https://doi.org/10.1016/j.siny.2019.04.001.
  • Borras, E., Y. Wang, P. Shah, K. Bellido, K. L. Hamera, R. A. Arlen, M. M. McCartney, et al. 2023. “Active Sampling of Volatile Chemicals for Non-Invasive Classification of Chicken Eggs by Sex Early in Incubation.” PLOS ONE 18 (5): e0285726. https://doi.org/10.1371/journal.pone.0285726.
  • Bruijnis, M. R. N., V. Blok, E. N. Stassen, and H. G. J. Gremmen. 2015. “Moral “Lock-in” in Responsible Innovation: The Ethical and Social Aspects of Killing Day-Old Chicks and Its Alternatives.” Journal of Agricultural and Environmental Ethics 28 (5): 939–960. https://doi.org/10.1007/s10806-015-9566-7.
  • Bruins, W. S., and W. M. Stutterheim, 2014. “Gender, Viability And/Or Developmental Stage Determination of Avian Embryos in Ovo.”
  • Bruins, W., and W. Stutterheim. 2017. “ Method and System for the Non-Destructive in Ovo Determination of Fowl Gender.”
  • Brümmer, N., I. Christoph-Schulz, and A.-K. Rovers. 2018. “Consumers’ Perspective on Dual-Purpose Chickens as Alternative to the Killing of Day-Old Chicks.” International Journal on Food System Dynamics 9 (5): 390–398.
  • Burkhardt, A., S. Geissler, P. Cimalla, J. Walther, E. Koch. 2010. “Minimal Invasive Localization of the Germinal Disc in Ovo for Subsequent Chicken Sexing Using Optical Coherence Tomography.” In Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIV, edited by J. A. Izatt, J. G. Fujimoto, and V. V. Tuchin, 75542N. San Francisco, CA: SPIE.
  • Busse, M., M. L. Kernecker, J. Zscheischler, F. Zoll, and R. Siebert. 2019. “Ethical Concerns in Poultry Production: A German Consumer Survey About Dual Purpose Chickens.” Journal of Agricultural and Environmental Ethics 32 (5–6): 905–925. https://doi.org/10.1007/s10806-019-09806-y.
  • Chen, T. T., C. C. Huang, T. Y. Lee, K. J. Lin, C. C. Chang, and K. L. Chen. 2010. “Effect of Caponization and Exogenous Androgen Implantation on Muscle Characteristics of Male Chickens.” Poultry Science 89 (3): 558–563. https://doi.org/10.3382/ps.2009-00429.
  • Choo, Y.-K., S.-T. Oh, K.-W. Lee, C.-W. Kang, H.-W. Kim, C.-J. Kim, E.-J. Kim, H.-S. Kim, and B.-K. An. 2014. “The Growth Performance, Carcass Characteristics, and Meat Quality of Egg-Type Male Growing Chicken and White-Mini Broiler in Comparison with Commercial Broiler (Ross 308).” Korean Journal for Food Science of Animal Resources 34 (5): 622–629. https://doi.org/10.5851/kosfa.2014.34.5.622.
  • Clark, B., G. B. Stewart, L. A. Panzone, I. Kyriazakis, and L. J. Frewer. 2017. “Citizens, Consumers and Farm Animal Welfare: A Meta-Analysis of Willingness-To-Pay Studies.” Food Policy 68: 112–127. https://doi.org/10.1016/j.foodpol.2017.01.006.
  • Clinton, M. 1998. “Sex Determination and Gonadal Development: A Bird’s Eye View.” The Journal of Experimental Zoology 281 (5): 457–465. https://doi.org/10.1002/(SICI)1097-010X(19980801)281:5<457:AID-JEZ10>3.0.CO;2-6.
  • Clinton, M., L. Haines, B. Belloir, and D. McBride. 2001. “Sexing Chick Embryos: A Rapid and Simple Protocol.” British Poultry Science 42 (1): 134–138. https://doi.org/10.1080/713655025.
  • Clinton, M., S. Nandi, D. Zhao, S. Olson, P. Peterson, T. Burdon, and D. McBride. 2016. “Real-Time Sexing of Chicken Embryos and Compatibility with in Ovo Protocols.” Sexual Development 10 (4): 210–216. https://doi.org/10.1159/000448502.
  • Corion, M., J. Keresztes, B. De Ketelaere, and W. Saeys. 2022. “In Ovo Sexing of Eggs from Brown Breeds with a Gender-Specific Color Using Visible-Near-Infrared Spectroscopy: Effect of Incubation Day and Measurement Configuration.” Poultry Science 101 (5): 101782. https://doi.org/10.1016/j.psj.2022.101782.
  • Cortés, O., A. Barroso, and S. Dunner. 1999. “Avian Sexing: An Optimized Protocol Using Polymerase Chain Reaction—Single-strand Conformation Polymorphism.” Journal of Veterinary Diagnostic Investigation 11 (3): 297–299. https://doi.org/10.1177/104063879901100318.
  • Costanzo, A., S. Panseri, A. Giorgi, A. Romano, M. Caprioli, N. Saino, and J. M. Avilés. 2016. “The Odour of Sex: Sex-Related Differences in Volatile Compound Composition Among Barn Swallow Eggs Carrying Embryos of Either Sex.” PLOS ONE 11 (11): e0165055. https://doi.org/10.1371/journal.pone.0165055.
  • de Haas, E. N., E. Oliemans, and M. A. A. M. van Gerwen. 2021. “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.” Frontiers in Veterinary Science 8:381. https://doi.org/10.3389/fvets.2021.662197.
  • Doran, T. J., K. R. Morris, T. G. Wise, T. E. O’Neil, C. A. Cooper, K. A. Jenkins, and M. L. V. Tizard. 2018. “Sex Selection in Layer Chickens.” Animal Production Science 58 (3): 476. https://doi.org/10.1071/AN16785.
  • Douglas, J. M., D. Sanchez-Migallon Guzman, and J. R. Paul-Murphy. 2018. “Pain in Birds: The Anatomical and Physiological Basis.” The Veterinary Clinics of North America. Exotic Animal Practice 21 (1): 17–31. https://doi.org/10.1016/j.cvex.2017.08.008.
  • Douglas, C., J. M. A. Turner, and J. L. Mueller. 2020. “Advances and Challenges in Genetic Technologies to Produce Single-Sex Litters.” PLOS Genetics 16 (7): e1008898. https://doi.org/10.1371/journal.pgen.1008898.
  • Eide, A. L., and J. C. Glover. 1995. “Development of the Longitudinal Projection Patterns of Lumbar Primary Sensory Afferents in the Chicken Embryo.” The Journal of Comparative Neurology 353 (2): 247–259. https://doi.org/10.1002/cne.903530207.
  • Eide, A. L., and J. C. Glover. 1997. “Developmental Dynamics of Functionally Specific Primary Sensory Afferent Projections in the Chicken Embryo.” Anatomy and Embryology 195 (3): 237–250. https://doi.org/10.1007/s004290050043.
  • European Commission. 2021. “European Citizens Initiative on “End the Cage Age”[online].” Accessed March 10, 2023. https://ec.europa.eu/commission/presscorner/detail/en/QANDA_21_3298.
  • EUROSTAT. 2022. “Poultry Statistics - Statistics Explained [Online].” Accessed March 9, 2023. https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Poultry_statistics#Poultry_production.
  • FAO. 2023. “Gateway to Poultry Production and Products [Online].” Accessed March 9, 2023. https://www.fao.org/poultry-production-products/production/en/.
  • Förster, A., L. Zumbrink, and J. Hurlin. 2022. “L’imagerie Hyper-Spectrale Comme Outil D’ovo-Sexage Pour Les Embryons des Souches D’oeufs Bruns - Une Enquête Terrain à Grande Échelle.” Quatorzièmes Journées de la Recherche Avicole Et Palmipèdes à Foie Gras 444–448.
  • Fridolfsson, A.-K., and H. Ellegren. 1999. “A Simple and Universal Method for Molecular Sexing of Non-Ratite Birds.” Journal of Avian Biology 30 (1): 116. https://doi.org/10.2307/3677252.
  • Galli, R., G. Preusse, C. Schnabel, T. Bartels, K. Cramer, M.-E. Krautwald-Junghanns, E. Koch, G. Steiner, and Y. K. Mishra. 2018. “Sexing of Chicken Eggs by Fluorescence and Raman Spectroscopy Through the Shell Membrane.” PLOS ONE 13 (2): e0192554. https://doi.org/10.1371/journal.pone.0192554.
  • Galli, R., G. Preusse, O. Uckermann, T. Bartels, M.-E. Krautwald-Junghanns, E. Koch, and G. Steiner. 2016. “In Ovo Sexing of Domestic Chicken Eggs by Raman Spectroscopy.” Analytical Chemistry 88 (17): 8657–8663. https://doi.org/10.1021/acs.analchem.6b01868.
  • Galli, R., G. Preusse, O. Uckermann, T. Bartels, M.-E. Krautwald-Junghanns, E. Koch, and G. Steiner. 2017. “In Ovo Sexing of Chicken Eggs by Fluorescence Spectroscopy.” Analytical and Bioanalytical Chemistry 409 (5): 1185–1194. https://doi.org/10.1007/s00216-016-0116-6.
  • Gangnat, I. D. M., S. Mueller, M. Kreuzer, R. E. Messikommer, M. Siegrist, and V. H. M. Visschers. 2018. “Swiss consumers’ Willingness to Pay and Attitudes Regarding Dual-Purpose Poultry and Eggs.” Poultry Science 97 (3): 1089–1098. https://doi.org/10.3382/ps/pex397.
  • Gautron, J., S. Réhault-Godbert, T. G. H. Van de Braak, and I. C. Dunn. 2021. “Review: What are the Challenges Facing the Table Egg Industry in the Next Decades and What Can Be Done to Address Them?” Animal 15: 100282. https://doi.org/10.1016/j.animal.2021.100282.
  • Gerken, M., D. Jaenecke, M. Kreuzer, and D. G. Martin. 2003. “Growth, Behaviour and Carcass Characteristics of Egg-Type Cockerels Compared to Male Broilers.” World’s Poultry Science Journal 59 (1): 46–49.
  • Giersberg, M., and N. Kemper. 2018. “Rearing Male Layer Chickens: A German Perspective.” Agriculture 8 (11): 176. https://doi.org/10.3390/agriculture8110176.
  • Göhler, D., B. Fischer, and S. Meissner. 2017. “In-Ovo Sexing of 14-Day-Old Chicken Embryos by Pattern Analysis in Hyperspectral Images (VIS/NIR Spectra): A Non-Destructive Method for Layer Lines with Gender-Specific Down Feather Color.” Poultry Science 96 (1): 1–4. https://doi.org/10.3382/ps/pew282.
  • Gremmen, B., M. R. N. Bruijnis, V. Blok, and E. N. Stassen. 2018. “A Public Survey on Handling Male Chicks in the Dutch Egg Sector.” Journal of Agricultural and Environmental Ethics 31 (1): 93–107. https://doi.org/10.1007/s10806-018-9712-0.
  • Haunshi, S., A. Pattanayak, S. Bandyopadhaya, S. C. Saxena, and K. M. Bujarbaruah. 2008. “A Simple and Quick DNA Extraction Procedure for Rapid Diagnosis of Sex of Chicken and Chicken Embryos.” The Journal of Poultry Science 45 (1): 75–81. https://doi.org/10.2141/jpsa.45.75.
  • Heise, H., and L. Theuvsen. 2017. “What Do Consumers Think About Farm Animal Welfare in Modern Agriculture? Attitudes and Shopping Behaviour.” International Food and Agribusiness Management Review 20 (3): 379–399. https://doi.org/10.22434/IFAMR2016.0115.
  • He, L., P. Martins, J. Huguenin, T.-N.-N. Van, T. Manso, T. Galindo, F. Gregoire, L. Catherinot, F. Molina, and J. Espeut. 2019. “Simple, Sensitive and Robust Chicken Specific Sexing Assays, Compliant with Large Scale Analysis.” PLOS ONE 14 (3): e0213033. https://doi.org/10.1371/journal.pone.0213033.
  • Hoan, N. D., and M. A. Khoan. 2016. “Meat Quality Comparison Between Fast Growing Broiler Ross 308 and Slow Growing Sasso Laying Males Reared in Free Range System.” Journal of Science and Development 148 (1): 101–108.
  • Icken, W., M. Schmutz, D. Cavero, and R. Preisinger. 2013. “Dual Purpose Chickens: The Breeder’s Answer to the Culling of Day-Old Male Layer.” In IX European Symposium on Poultry Welfare, Uppsala, Sweden, 91.
  • Kahn, N. W., J. S. John, and T. W. Quinn. 1998. “Chromosome-Specific Intron Size Differences in the Avian CHD Gene Provide an Efficient Method for Sex Identification in Birds.” The Auk: Ornithological Advances 115 (4): 1074–1078. https://doi.org/10.2307/4089527.
  • Kaleta, E. F., and T. Redmann. 2008. “Approaches to Determine the Sex Prior to and After Incubation of Chicken Eggs and of Day-Old Chicks.” World’s Poultry Science Journal 64 (3): 391–399. https://doi.org/10.1017/S0043933908000111.
  • Klein, S., and F. Ellendorff. 2000. “Localisation of Xho1 Repetitive Sequences on Autosomes in Addition to the W Chromosome in Chickens and Its Relevance for Sex Diagnosis.” Animal Genetics 31 (2): 104–109. https://doi.org/10.1046/j.1365-2052.2000.00568.x.
  • Koenig, M., G. Hahn, K. Damme, and M. Schmutz. 2010. “Utilization of Laying-Type Cockerels as Coquelets: Growth Performance and Carcass Quality.” Fleischwirtschaft 90 (2): 92–94.
  • Koenig, M., G. Hahn, K. Damme, and M. Schmutz. 2012. “Utilization of Laying-Type Cockerels as ‘Coquelets’: Influence of Genotype and Diet Characteristics on Growth Performance and Carcass Composition.” Archiv Für Geflügelkunde 76 (3): 197–202.
  • Kollmansperger, S., M. Anders, J. Werner, A. M. Saller, L. Weiss, S. C. Süß, J. Reiser, et al. 2023. “Nociception in Chicken Embryos, Part II: Embryonal Development of Electroencephalic Neuronal Activity in Ovo as a Prerequisite for Nociception.” Animals 13 (18): 2839. https://doi.org/10.3390/ani13182839.
  • Krautwald-Junghanns, M.-E., K. Cramer, B. Fischer, A. Förster, R. Galli, F. Kremer, E. U. Mapesa, et al. 2018. “Current Approaches to Avoid the Culling of Day-Old Male Chicks in the Layer Industry, with Special Reference to Spectroscopic Methods.” Poultry Science 97 (3): 749–757. https://doi.org/10.3382/ps/pex389.
  • Lambertz, C., K. Wuthijaree, and M. Gauly. 2018. “Performance, Behavior, and Health of Male Broilers and Laying Hens of 2 Dual-Purpose Chicken Genotypes.” Poultry Science 97 (10): 3564–3576. https://doi.org/10.3382/ps/pey223.
  • Leary, S., W. Underwood, R. Anthony, S. Cartner, T. Grandin, C. Greenacre, S. Gwaltney-Brant, et al. 2020. “AVMA (American Veterinary Medical Association). AVMA Guidelines of the Euthanasia of Animals.”
  • Leenstra, F., G. Munnichs, V. Beekman, E. van den Heuvel-Vromans, L. Aramyan, and H. Woelders. 2011. “Killing Day-Old Chicks? Public Opinion Regarding Potential Alternatives.” Animal Welfare 20 (1): 37–45. https://doi.org/10.1017/S0962728600002414.
  • Leenstra, F., P. van Horne, and M. van Krimpen. 2010. “Dual Purpose Chickens, Exploration of Technical, Environmental and Economical Feasibility.” In XIII European Poultry Conference, Tours, France.
  • Lichovníková, M., J. Jandásek, M. Jůzl, and E. Dračková. 2009. “The Meat Quality of Layer Males from Free Range in Comparison with Fast Growing Chickens.” Czech Journal of Animal Science 54 (11): 490–497. https://doi.org/10.17221/3/2009-CJAS.
  • Mellor, D., and T. Diesch. 2007. “Birth and Hatching: Key Events in the Onset of Awareness in the Lamb and Chick.” New Zealand Veterinary Journal 55 (2): 51–60. https://doi.org/10.1080/00480169.2007.36742.
  • Mueller, S., M. Kreuzer, M. Siegrist, K. Mannale, R. E. Messikommer, and I. D. M. Gangnat. 2018. “Carcass and Meat Quality of Dual-Purpose Chickens (Lohmann Dual, Belgian Malines, Schweizerhuhn) in Comparison to Broiler and Layer Chicken Types.” Poultry Science 97 (9): 3325–3336. https://doi.org/10.3382/ps/pey172.
  • Murawska, D., R. Bochno, D. Michalik, and M. Janiszewska. 2005. “Age-Related Changes in the Carcass Tissue Composition and Distribution of Meat and Fat with Skin in Carcasses of Laying-Type Cockerels.” Archiv Fur Geflugelkunde 69 (3): 135–138.
  • Murawska, D., M. Gesek, and D. Witkowska. 2019. “Suitability of Layer-Type Male Chicks for Capon Production.” Poultry Science 98 (8): 3345–3351. https://doi.org/10.3382/ps/pez146.
  • Pan, L., W. Zhang, M. Yu, Y. Sun, X. Gu, L. Ma, Z. Li, P. Hu, and K. Tu. 2016. “Gender Determination of Early Chicken Hatching Eggs Embryos by Hyperspectral Imaging.” Transactions of the Chinese Society of Agricultural Engineering 32 (1): 181–186.
  • Peters, J. J., A. R. Vonderahe, and T. H. Powers. 1956. “The Functional Chronology in Developing Chick Nervous System.” Journal of Experimental Zoology 133 (3): 505–518. https://doi.org/10.1002/jez.1401330306.
  • Petitte, J. N., and A. E. Kegelmeyer. 1995. “Rapid Sex Determination of Chick Embryos Using the Polymerase Chain Reaction 1.” Animal Biotechnology 6 (2): 119–130. https://doi.org/10.1080/10495399509525841.
  • Popova, T., E. Petkov, M. Ignatova, D. Vlahova-Vangelova, D. Balev, S. Dragoev, and N. Kolev. 2022. “Male Layer-Type Chickens - an Alternative Source for High Quality Poultry Meat: A Review on the Carcass Composition, Sensory Characteristics and Nutritional Profile.” Brazilian Journal of Poultry Science 24 (3): 3. https://doi.org/10.1590/1806-9061-2021-1615.
  • Preuße, G., V. Porstmann, T. Bartels, C. Schnabel, R. Galli, E. Koch, M. Oelschlägel, O. Uckermann, and G. Steiner. 2023. “Highly Sensitive and Quick in Ovo Sexing of Domestic Chicken Eggs by Two-Wavelength Fluorescence Spectroscopy.” Analytical and Bioanalytical Chemistry 415 (4): 603–613. https://doi.org/10.1007/s00216-022-04446-0.
  • Quaresma, M. A. G., I. C. Antunes, M. F. Ribeiro, S. Prazeres, R. J. B. Bessa, and P. M. da Costa. 2017. “Immunocastration as an Alternative to Caponization: Evaluation of Its Effect on Body and Bone Development and on Meat Color and Composition.” Poultry Science 96 (10): 3608–3615. https://doi.org/10.3382/ps/pex191.
  • Reithmayer, C., M. Danne, and O. Mußhoff. 2021a. “Look at That!—The Effect Pictures Have on Consumer Preferences for in Ovo Gender Determination as an Alternative to Culling Male Chicks.” Poultry Science 100 (2): 643–653. https://doi.org/10.1016/j.psj.2020.09.092.
  • Reithmayer, C., M. Danne, and O. Mußhoff. 2021b. “Societal Attitudes Towards in Ovo Gender Determination as an Alternative to Chick Culling.” Agribusiness 37 (2): 306–323. https://doi.org/10.1002/agr.21650.
  • Reithmayer, C., and O. Mußhoff. 2019. “Consumer Preferences for Alternatives to Chick Culling in Germany.” Poultry Science 98 (10): 4539–4548. https://doi.org/10.3382/ps/pez272.
  • Röhl, D. 2020. “Animal Equality - Il Sessaggio In-Ovo [Online].” Accessed March 14, 2023. https://animalequality.it/app/uploads/2020/07/In-OvoSexing-AlternativeToMaleChickenKillingReport_IT-1.pdf.
  • Rosenbruch, M. 1997. “The Sensitivity of Chicken Embryos in Incubated Eggs.” ALTEX 14 (3): 111–113.
  • Ryan, J. 2019. “How CRISPR Could Save 6 Billion Chickens from the Meat Grinder - CNET [Online].” Accessed March 13, 2023. https://www.cnet.com/science/how-crispr-could-save-6-billion-chickens-from-the-meat-grinder/.
  • Siekmann, L., L. Meier-Dinkel, S. Janisch, B. Altmann, C. Kaltwasser, C. Sürie, and C. Krischek. 2018. “Carcass Quality, Meat Quality and Sensory Properties of the Dual-Purpose Chicken Lohmann Dual.” Foods 7 (10): 156. https://doi.org/10.3390/foods7100156.
  • Soisontes, S., 2015. “An Alternative Use of One Day-Old Male Layer Chicks: The Case of Thailand.” Vechta: Projects Sustainability in Poultry Production: A Comparative Study Between Germany and Thailand. https://doi.org/10.13140/RG.2.2.16279.98725.
  • Steiner, G., T. Bartels, A. Stelling, M.-E. Krautwald-Junghanns, H. Fuhrmann, V. Sablinskas, and E. Koch. 2011. “Gender Determination of Fertilized Unincubated Chicken Eggs by Infrared Spectroscopic Imaging.” Analytical and Bioanalytical Chemistry 400 (9): 2775–2782. https://doi.org/10.1007/s00216-011-4941-3.
  • Süß, S. C., J. Werner, A. M. Saller, L. Weiss, J. Reiser, J. M. Ondracek, Y. Zablotski, et al. 2023. “Nociception in Chicken Embryos, Part III: Analysis of Movements Before and After Application of a Noxious Stimulus.” Animals 13 (18): 2859. https://doi.org/10.3390/ani13182859.
  • Symeon, G. K., F. Mantis, I. Bizelis, A. Kominakis, and E. Rogdakis. 2012. “Effects of Caponization on Growth Performance, Carcass Composition and Meat Quality of Males of a Layer Line.” Animal 6 (12): 2023–2030. https://doi.org/10.1017/S1751731112001024.
  • Tiemann, I., S. Hillemacher, and M. Wittmann. 2020. “Are Dual-Purpose Chickens Twice as Good? Measuring Performance and Animal Welfare Throughout the Fattening Period.” Animals 10 (11): 1980. https://doi.org/10.3390/ani10111980.
  • Tiersch, T. R. 2003. “Identification of Sex in Chickens by Flow Cytornetry.” World’s Poultry Science Journal 59 (1): 25–32. https://doi.org/10.1079/WPS20030002.
  • Turkyilmaz, M. K., L. Karagenc, and E. Fidan. 2010. “Sexing of Newly-Hatched Chicks Using DNA Isolated from Chorio-Allantoic Membrane Samples by Polymerase Chain Reaction in Denizli Chicken.” British Poultry Science 51 (4): 525–529. https://doi.org/10.1080/00071668.2010.502521.
  • van Bussel, L. M., A. Kuijsten, M. Mars, and P. van ‘t Veer. 2022. “Consumers’ Perceptions on Food-Related Sustainability: A Systematic Review.” Journal of Cleaner Production 341: 130904.
  • Vinci, C., 2022. “Male Chick Culling.” European Parliamentary Research Service.
  • Webster, B., W. Hayes, T. W. Pike, and N. Saino. 2015. “Avian Egg Odour Encodes Information on Embryo Sex, Fertility and Development.” PLOS ONE 10 (1): e0116345. https://doi.org/10.1371/journal.pone.0116345.
  • Weissmann, A., A. Förster, J. Gottschalk, S. Reitemeier, M.-E. Krautwald-Junghanns, R. Preisinger, and A. Einspanier. 2014. “In Ovo-Gender Identification in Laying Hen Hybrids: Effects on Hatching and Production Performance.” European Poultry Science (EPS) 78. https://doi.org/10.1399/eps.2014.25.
  • Weissmann, A., S. Reitemeier, A. Hahn, J. Gottschalk, and A. Einspanier. 2013. “Sexing Domestic Chicken Before Hatch: A New Method for in Ovo Gender Identification.” Theriogenology 80 (3): 199–205. https://doi.org/10.1016/j.theriogenology.2013.04.014.
  • Weiss, L., A. M. Saller, J. Werner, S. C. Süß, J. Reiser, S. Kollmansperger, M. Anders, T. Fenzl, B. Schusser, and C. Baumgartner. 2023. “Nociception in Chicken Embryos, Part I: Analysis of Cardiovascular Responses to a Mechanical Noxious Stimulus.” Animals 13 (17): 2710. https://doi.org/10.3390/ani13172710.
  • Zhu, Z. H., Z. F. Ye, and Y. Tang. 2021. “Nondestructive Identification for Gender of Chicken Eggs Based on GA-BPNN with Double Hidden Layers.” Journal of Applied Poultry Research 30 (4): 100203. https://doi.org/10.1016/j.japr.2021.100203.

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