1997
DOI: 10.1093/icb/37.6.536
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Stress Responses in Avian Embryos

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Cited by 23 publications
(12 citation statements)
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“…Exposing embryos to high or low temperatures during incubation improves their capacity to adapt to hot or cold environments, respectively, in the posthatch phase (Decuypere 1984;Minne and Decuypere 1984;Janke et al 2002). Epple et al (1997) suggested that the embryonic chicken is susceptible to stress. In a study to improve the broilers' thermotolerance, Yahav and Hurwitz (1996) showed that thermal conditioning at the age of 3 or 5 days improved acquisition of thermotolerance in broilers exposed to heat stress at 6 weeks of age.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Exposing embryos to high or low temperatures during incubation improves their capacity to adapt to hot or cold environments, respectively, in the posthatch phase (Decuypere 1984;Minne and Decuypere 1984;Janke et al 2002). Epple et al (1997) suggested that the embryonic chicken is susceptible to stress. In a study to improve the broilers' thermotolerance, Yahav and Hurwitz (1996) showed that thermal conditioning at the age of 3 or 5 days improved acquisition of thermotolerance in broilers exposed to heat stress at 6 weeks of age.…”
Section: Resultsmentioning
confidence: 99%
“…The timing of TM has to be linked to the development of the hypothalamusÁ hypophysisÁthyroid axis to change the heat production threshold response , and to the development of the hypothalamusÁhypophysisÁ adrenal axis to avoid increase in stress response (Epple et al 1997). …”
Section: Introductionmentioning
confidence: 99%
“…The timing of thermal manipulations has to be linked to the development and activation of the hypothalamus-hypophysis-thyroid axis [7,18] and of the hypothalamic-hypophysial-adrenal axis [5,20] in order to change the heat production threshold response and the stress response that might reflect upon thermoregulation. Yahav et al [26,27] demonstrated that thermal manipulations during days 16 to 18 of embryogenesis may reach a significant improvement of thermotolerance acquisition, probably related to a reduction in body temperature (T b ) and in plasma thyroid hormone concentrations, assumed to reduce metabolic rate.…”
Section: Introductionmentioning
confidence: 99%
“…1 b). This problem was likely due to the presence of conjugated steroid metabolites,19 as it was eliminated when samples were treated with acid solvolysis (Fig. 1 b).…”
Section: Resultsmentioning
confidence: 99%
“…Most studies have demonstrated that steroids are excreted almost entirely as metabolites, with little to none of the parent hormone ever evident in excreta 2–31. At least one study of allantoic fluid from chicken embryos at embryonic day 13 found that conjugated steroids were present but free steroids were not 19. Acid solvolysis probably returned most conjugated steroids to their parent form; however, because the specific metabolites have not yet been identified, it is possible that more distinct or even different patterns will emerge when an assay specific to the appropriate steroid metabolites is used.…”
Section: Discussionmentioning
confidence: 99%