1 / 13

Feto-Maternal Communication in Broiler Chickens (Gallus gallus domesticus)

Feto-Maternal Communication in Broiler Chickens (Gallus gallus domesticus) Presentation of a MSc Thesis By: Albin Gräns. Introduction – Material & Methods – Results & Discussion - Conclusion. Background. Needs of the parents vs. needs of the fetuses

bian
Download Presentation

Feto-Maternal Communication in Broiler Chickens (Gallus gallus domesticus)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Feto-Maternal Communication in Broiler Chickens (Gallus gallus domesticus) Presentation of a MSc Thesis By: Albin Gräns

  2. Introduction – Material & Methods – Results & Discussion - Conclusion Background • Needs of the parents vs. needs of the fetuses • Feto-maternal communication would have an adaptive value. • Possible means of communication are sounds, movements and chemical signals.

  3. Introduction – Material & Methods – Results & Discussion - Conclusion Aims How is the fetus affected by decreasing temperatures? Do fetuses behaviourally respond to decreasing temperatures?

  4. Introduction – Material & Methods – Results & Discussion - Conclusion EP 18d IP Five Temperature intervals x 30 min 40°C 30 °C

  5. Introduction – Material & Methods – Results & Discussion - Conclusion • Physiological variables indicating well-being • Oxygen consumption (VO2) • Ventilation frequency • Groups of communication variables • Fetal vocalizations • Fetal movements

  6. Introduction– Material & Methods– Results & Discussion - Conclusion • Oxygen consumption • Conforming response T1 T2 T3 T4 T5 T1 T2 T3 T4 T5

  7. Introduction– Material & Methods– Results & Discussion - Conclusion T1 T2 T3 T4 T5

  8. Introduction– Material & Methods– Results & Discussion - Conclusion Temperature sensitivity (ml min-1ºC-1) 18d IP EP

  9. Introduction– Material & Methods– Results & Discussion - Conclusion + - • Vocalizations • Movements • Ventilation freq. Maximum peak trend - + T1 T2 T3 T4 T5 T1 T2 T3 T4 T5 - + - 35-36°C + T1 T2 T3 T4 T5 T1 T2 T3 T4 T5

  10. Introduction– Material & Methods– Results & Discussion - Conclusion (Lundy 1969) Opt Embryonic Development 0 ULT LLOD PZT (36.0°C) (40.5°C) (26.0°C) For Chickens:

  11. Introduction– Material & Methods– Results & Discussion- Conclusion Conclusion • VO2 decreased linearly with decreasing temperatures. • Fetal vocalization was notcorrelated with temperature variations. • Fetal movements peaked at 35-36°C and can be important for communication purposes.

  12. Acknowledgement: My supervisor Jordi Altimiras for all the help, guidance and critical reading of the manuscript Kläckeribolaget in Väderstad for supplying me with eggs. Thank you for your attention!

More Related