Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature
The modern broiler is selected to exploit its full genetic potential, to sustain a rapid growth rate, and to lower the feed conversion rate (FCR). Recently reported reductions in FCR have been associated with augmented tissue formation at the expense of physiological functions such as thermoregulati...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2022.934676/full |
| _version_ | 1828401010106695680 |
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| author | A. Haron A. Haron D. Shinder M. Ruzal S. Druyan |
| author_facet | A. Haron A. Haron D. Shinder M. Ruzal S. Druyan |
| author_sort | A. Haron |
| collection | DOAJ |
| description | The modern broiler is selected to exploit its full genetic potential, to sustain a rapid growth rate, and to lower the feed conversion rate (FCR). Recently reported reductions in FCR have been associated with augmented tissue formation at the expense of physiological functions such as thermoregulation. In turn, modern broilers exhibit a relatively low capability to balance energy expenditure under suboptimal ambient temperature. Hypoxic conditions at late incubation stages play a role in reforming metabolic plasticity. This work examined the effect of exposure to 12-h hypoxia (12H; 17% O2) for three consecutive days (from E16 through E18), or continuous hypoxia exposure for 48 h (48H), from E16 through E17, as compared to standard incubation (21% O2) on post-hatch performance of broilers maintained under suboptimal ambient temperatures (cold, hot, and diurnal cyclic ambient temperature). 12H chicks kept under hot ambient temperature had significantly lower body temperature (Tb) as compared to the control chicks. On day 42, both 12H and 48H chicks grown in the cyclic temperature room had significantly lower Tbs than controls. In parallel, from week 4, onward, 12H chicks had a significantly lower FCR than controls, and the 48H chicks demonstrated a lower FCR from week 5 and on. 12H and 48H broilers maintained under diurnal cyclic ambient temperature, exhibited significantly greater relative breast muscle weight, and a similar pattern was found in hypoxic broilers raised under standard and hot ambient temperatures. Hypoxic manipulation affects and create an adaptive bias in allocating metabolic energy between maintenance and growth, thus resulting in improved broiler performance, thermoregulation, and rearing under suboptimal environmental temperature. |
| first_indexed | 2024-12-10T09:40:11Z |
| format | Article |
| id | doaj.art-55bf15930cc2439cb6963d24d148e16c |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-10T09:40:11Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-55bf15930cc2439cb6963d24d148e16c2022-12-22T01:54:01ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2022-07-011310.3389/fphys.2022.934676934676Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental TemperatureA. Haron0A. Haron1D. Shinder2M. Ruzal3S. Druyan4The Robert H. Smith Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, IsraelInstitute of Animal Science, Agricultural Research Organization, Volcani Center, Rishon Le Ziyyon, IsraelInstitute of Animal Science, Agricultural Research Organization, Volcani Center, Rishon Le Ziyyon, IsraelInstitute of Animal Science, Agricultural Research Organization, Volcani Center, Rishon Le Ziyyon, IsraelInstitute of Animal Science, Agricultural Research Organization, Volcani Center, Rishon Le Ziyyon, IsraelThe modern broiler is selected to exploit its full genetic potential, to sustain a rapid growth rate, and to lower the feed conversion rate (FCR). Recently reported reductions in FCR have been associated with augmented tissue formation at the expense of physiological functions such as thermoregulation. In turn, modern broilers exhibit a relatively low capability to balance energy expenditure under suboptimal ambient temperature. Hypoxic conditions at late incubation stages play a role in reforming metabolic plasticity. This work examined the effect of exposure to 12-h hypoxia (12H; 17% O2) for three consecutive days (from E16 through E18), or continuous hypoxia exposure for 48 h (48H), from E16 through E17, as compared to standard incubation (21% O2) on post-hatch performance of broilers maintained under suboptimal ambient temperatures (cold, hot, and diurnal cyclic ambient temperature). 12H chicks kept under hot ambient temperature had significantly lower body temperature (Tb) as compared to the control chicks. On day 42, both 12H and 48H chicks grown in the cyclic temperature room had significantly lower Tbs than controls. In parallel, from week 4, onward, 12H chicks had a significantly lower FCR than controls, and the 48H chicks demonstrated a lower FCR from week 5 and on. 12H and 48H broilers maintained under diurnal cyclic ambient temperature, exhibited significantly greater relative breast muscle weight, and a similar pattern was found in hypoxic broilers raised under standard and hot ambient temperatures. Hypoxic manipulation affects and create an adaptive bias in allocating metabolic energy between maintenance and growth, thus resulting in improved broiler performance, thermoregulation, and rearing under suboptimal environmental temperature.https://www.frontiersin.org/articles/10.3389/fphys.2022.934676/fullembryonic developmenthypoxiaincubationbroiler performancethermoregulationmetabolism |
| spellingShingle | A. Haron A. Haron D. Shinder M. Ruzal S. Druyan Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature Frontiers in Physiology embryonic development hypoxia incubation broiler performance thermoregulation metabolism |
| title | Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature |
| title_full | Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature |
| title_fullStr | Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature |
| title_full_unstemmed | Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature |
| title_short | Post-Hatch Performance of Broilers Following Hypoxic Exposure During Incubation Under Suboptimal Environmental Temperature |
| title_sort | post hatch performance of broilers following hypoxic exposure during incubation under suboptimal environmental temperature |
| topic | embryonic development hypoxia incubation broiler performance thermoregulation metabolism |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2022.934676/full |
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