The effect of heat stress on some immune parameters of broiler chickens in the conditions of the Syrian coast

Authors

  • Ghayth Jazaa Tishreen university
  • zouher jabbor Tishreen University

Abstract

The study was conducted on 180 one-day-old Ross hybrid chicks, without distinguishing between males and females, to determine the effect of heat stress on some immunological indicators. The chicks were divided into two groups, each group containing 90 chicks.

The control group was under ideal temperature conditions suitable for broiler chickens throughout the experiment, while the heat stress group was subjected to heat stress from the age of 22 days to the age of 42 days for 7 hours a day during the day from ten in the morning until five in the evening at a temperature rate of 31 ± 1, with a relative humidity ranging between 70-80%, and a nursery density of 10 birds per square meter.

The experiment lasted for six weeks, from 17/7/2022 to 28/8/2022. At the end of the experiment, at the age of 42 days, the white blood cell count and the weight of the liver and spleen were calculated for each group.

The results showed a significant decrease (P<0.05) in the white blood cell count in the stress group (20.06±0.31) thousand cells/mm³ compared to the control sample (22.4±0.2) thousand cells/mm³, and a significant decrease (P<0.05) in the weight of the liver and spleen in the heat stress sample (33.6 ± 0.41, 1.88 ± 0.02) g, compared to the control group (38.7 ± 0.64, 2.24 ± 0.04) g.

Downloads

Published

2023-08-06

How to Cite

جزعه غ., & جبور ز. (2023). The effect of heat stress on some immune parameters of broiler chickens in the conditions of the Syrian coast. Tishreen University Journal -Biological Sciences Series, 45(3), 377–384. Retrieved from https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/14828

Issue

Vol. 45 No. 3 (2023): Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series

Section

Master student researches

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series   

 Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series  .  The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series    Publisher

journal uses a CC BY-NC-SA license which mean

You are free to:

  • Adapt — remix, transform, and build upon the material
  •  
  • The licensor cannot revoke these freedoms as long as you follow the license terms.

 

  • Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • NonCommercial — You may not use the material for commercial purposes.
  • ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.