Influence of non-ventilating intervals during early incubation stage on egg hatching process
Background and Aim: The exchange of oxygen and carbon dioxide (CO2) in the incubator plays a key role in embryonic development and hatching. This study aimed to study the effect of non-ventilated (NV) intervals during the early stage of embryonic development on the hatching process. Materials and...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Veterinary World
2023-07-01
|
| Series: | Veterinary World |
| Subjects: | |
| Online Access: | https://www.veterinaryworld.org/Vol.16/July-2023/21.pdf |
| _version_ | 1827878113901543424 |
|---|---|
| author | Wesam A. Fares Mona R. M. Ahmed R. E. Rizk E. H. A. Shahein N. G. Boutrous Karim El-Sabrout |
| author_facet | Wesam A. Fares Mona R. M. Ahmed R. E. Rizk E. H. A. Shahein N. G. Boutrous Karim El-Sabrout |
| author_sort | Wesam A. Fares |
| collection | DOAJ |
| description | Background and Aim: The exchange of oxygen and carbon dioxide (CO2) in the incubator plays a key role in embryonic development and hatching. This study aimed to study the effect of non-ventilated (NV) intervals during the early stage of embryonic development on the hatching process.
Materials and Methods: Hatching eggs (n = 7200) were equally divided into four treatment groups and incubated in four incubators. The first group was incubated in normal ventilated condition (V) during the setting phase of incubation. Ventilation holes of the three remaining incubators were closed for the first 3, 6, and 9 days and termed as NV groups (NV1, NV2, and NV3, respectively). A gradual increase in CO2 was allowed for NV groups, followed by opening the incubator holes to permit ventilation throughout the rest of the incubation periods.
Results: Obtained results demonstrated that CO2 concentration gradually increased up to 0.19% for the NV1 group, 0.41% for the NV2 group, and 0.90% for the NV3 group, while CO2 concentration remained at 0.08% during the first 9 days of incubation in the V group. Albumen pH was lowered for all NV groups. The highest hatchability percentage was recorded for NV3 followed by NV2 and NV1 groups. All NV groups represented earlier and narrower spread of hatch and higher hatched chick weight. Embryos and hatched chicks in the NV groups had higher hormonal levels of thyroxin and corticosterone.
Conclusion: All non-ventilation periods had positive effects on narrowing the spread of hatch, increasing hatched chick weight and hatchability percentage compared to the normal V condition. Furthermore, the non-ventilation throughout the first 9 days of incubation yielded the best hatching results. |
| first_indexed | 2024-03-12T17:46:40Z |
| format | Article |
| id | doaj.art-7c085808a75f46a6a5866323ec10819e |
| institution | Directory Open Access Journal |
| issn | 0972-8988 2231-0916 |
| language | English |
| last_indexed | 2024-03-12T17:46:40Z |
| publishDate | 2023-07-01 |
| publisher | Veterinary World |
| record_format | Article |
| series | Veterinary World |
| spelling | doaj.art-7c085808a75f46a6a5866323ec10819e2023-08-03T15:46:01ZengVeterinary WorldVeterinary World0972-89882231-09162023-07-011671534154010.14202/vetworld.2023.1534-1540Influence of non-ventilating intervals during early incubation stage on egg hatching processWesam A. Fares0https://orcid.org/0000-0003-4324-0920Mona R. M. Ahmed1https://orcid.org/0000-0003-0626-902XR. E. Rizk2https://orcid.org/0000-0001-7245-4886E. H. A. Shahein3https://orcid.org/0009-0003-3932-2955N. G. Boutrous4https://orcid.org/0009-0008-2819-7243Karim El-Sabrout5https://orcid.org/0000-0003-2762-2363Department of Poultry Breeding, Animal Production Research Institute, Agriculture Research Center, Giza, Egypt.Department of Poultry Breeding, Animal Production Research Institute, Agriculture Research Center, Giza, Egypt.Department of Poultry Breeding, Animal Production Research Institute, Agriculture Research Center, Giza, Egypt.Department of Poultry Breeding, Animal Production Research Institute, Agriculture Research Center, Giza, Egypt.Department of Poultry Breeding, Animal Production Research Institute, Agriculture Research Center, Giza, Egypt.Department of Poultry Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.Background and Aim: The exchange of oxygen and carbon dioxide (CO2) in the incubator plays a key role in embryonic development and hatching. This study aimed to study the effect of non-ventilated (NV) intervals during the early stage of embryonic development on the hatching process. Materials and Methods: Hatching eggs (n = 7200) were equally divided into four treatment groups and incubated in four incubators. The first group was incubated in normal ventilated condition (V) during the setting phase of incubation. Ventilation holes of the three remaining incubators were closed for the first 3, 6, and 9 days and termed as NV groups (NV1, NV2, and NV3, respectively). A gradual increase in CO2 was allowed for NV groups, followed by opening the incubator holes to permit ventilation throughout the rest of the incubation periods. Results: Obtained results demonstrated that CO2 concentration gradually increased up to 0.19% for the NV1 group, 0.41% for the NV2 group, and 0.90% for the NV3 group, while CO2 concentration remained at 0.08% during the first 9 days of incubation in the V group. Albumen pH was lowered for all NV groups. The highest hatchability percentage was recorded for NV3 followed by NV2 and NV1 groups. All NV groups represented earlier and narrower spread of hatch and higher hatched chick weight. Embryos and hatched chicks in the NV groups had higher hormonal levels of thyroxin and corticosterone. Conclusion: All non-ventilation periods had positive effects on narrowing the spread of hatch, increasing hatched chick weight and hatchability percentage compared to the normal V condition. Furthermore, the non-ventilation throughout the first 9 days of incubation yielded the best hatching results.https://www.veterinaryworld.org/Vol.16/July-2023/21.pdfalbumen phcarbon dioxideembryonic hormoneshatchabilitynon-ventilation |
| spellingShingle | Wesam A. Fares Mona R. M. Ahmed R. E. Rizk E. H. A. Shahein N. G. Boutrous Karim El-Sabrout Influence of non-ventilating intervals during early incubation stage on egg hatching process Veterinary World albumen ph carbon dioxide embryonic hormones hatchability non-ventilation |
| title | Influence of non-ventilating intervals during early incubation stage on egg hatching process |
| title_full | Influence of non-ventilating intervals during early incubation stage on egg hatching process |
| title_fullStr | Influence of non-ventilating intervals during early incubation stage on egg hatching process |
| title_full_unstemmed | Influence of non-ventilating intervals during early incubation stage on egg hatching process |
| title_short | Influence of non-ventilating intervals during early incubation stage on egg hatching process |
| title_sort | influence of non ventilating intervals during early incubation stage on egg hatching process |
| topic | albumen ph carbon dioxide embryonic hormones hatchability non-ventilation |
| url | https://www.veterinaryworld.org/Vol.16/July-2023/21.pdf |
| work_keys_str_mv | AT wesamafares influenceofnonventilatingintervalsduringearlyincubationstageonegghatchingprocess AT monarmahmed influenceofnonventilatingintervalsduringearlyincubationstageonegghatchingprocess AT rerizk influenceofnonventilatingintervalsduringearlyincubationstageonegghatchingprocess AT ehashahein influenceofnonventilatingintervalsduringearlyincubationstageonegghatchingprocess AT ngboutrous influenceofnonventilatingintervalsduringearlyincubationstageonegghatchingprocess AT karimelsabrout influenceofnonventilatingintervalsduringearlyincubationstageonegghatchingprocess |