The effect of incubation temperatuer on oxygen consumption and organ growth in domestic-fowl embryos
| Autor: | G.C. Whittow, Q. Zhang |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Physiology
Fowl Stomach Environmental factor chemistry.chemical_element Enhanced growth Embryo Anatomy Biology biology.organism_classification medicine.disease_cause Biochemistry Oxygen Andrology Incubation temperature medicine.anatomical_structure chemistry medicine General Agricultural and Biological Sciences Incubation Developmental Biology |
| Zdroj: | Journal of Thermal Biology. 17:339-345 |
| ISSN: | 0306-4565 |
| DOI: | 10.1016/0306-4565(92)90043-f |
| Popis: | 1. 1.|Oxygen consumption and organ growth were measured in domestic-fowl embryos incubated at different temperatures (36, 38 and 40°C). 2. 2.|Embryonic oxygen consumption was highest at an incubation temperature of 40°C and lowest at 36°C. These differences were ascribed largely to variations in embryo size at different incubation temperatures. 3. 3.|At incubation temperatuers of 40 and 38°C, there was a plateau in oxygen consumption late in incubation, but this was not apparent at 36°C. 4. 4.|At 36°C, some tissues (e.g. eyeballs) were “spared” the repression of growth that characterized the embryo as a whole, while other tissues (e.g. stomach) incurred a much greater growth reduction. Similarly, at 40°C, stomach growth exceeded that of the embryo as a whole, while the eyeballs were largely spared the enhanced growth. 5. 5.|A simple index of tissue age revealed that, in general, there were consensual changes in tissue maturity and growth at different temperatures but that there were some disparities between growth and maturity in individual organs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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