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Sex-based responses of heat stress and subsequent recovery on the growth performance, metabolic changes, and redox status of broilers at market age

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Abstract

This experiment investigated the sex responses of heat stress (HS) and subsequent recovery on growth performance, serum metabolic parameters, and redox status. Two hundred 38-day-old broilers were arranged in a completely randomized design with a 2 × 2 (temperatures and sexes) factorial arrangement in five replicates. Broilers were raised at 24 ± 1 °C or 32 ± 1 °C for 3 days and returned to 24 °C for 2 days. The study showed that HS decreased both average daily feed intake (ADFI), average daily gain (ADG), serum total glutathione peroxidase (GPx), and superoxide dismutase (T-SOD). However, it increased feed conversion ratio (FCR), rectal temperature (RT), respiratory rate (RR), serum glucose, blood urea nitrogen (BUN), low-density lipoprotein cholesterol, and the protein carbonyl group (PCG). Male broilers had higher ADFI, ADG, lactic acid (LA), high-density lipoprotein cholesterol (HDL-C), and PCG, but lower FCR, albumin, total antioxidant capacity, T-SOD, and GPx. Temperature and sex significantly interacted with ADFI, ADG, LA, and HDL-C. The effects of HS on RR, RT, glucose, albumin, BUN, PCG, T-SOD, and GPx recovered after 2 days. These results indicate that HS and subsequent recovery affect growth performance, which is accompanied by disturbances in serum nutrient metabolism and abnormalities in redox function and manifested by temporal and gender differences.

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Data availability

The data that support the finding of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

The author would like to thank all teachers and students who dedicated their time to take part in this study.

Funding

This research was funded by the National Natural Science Foundation of China (No. 31702306), the Natural Science Foundation of Anhui Province (No. 1908085QC145), and the Foundation for Distinguished Young Talents in Higher Education of Anhui Province (No. gxyq2020038).

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Authors and Affiliations

Authors

Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Ding Jinxue and Sun Shiang. Data analysis was performed by Song Kai. Writing, reviewing, and editing the last draft of the manuscript were performed Xiong Yongjie and He Shaojun. All authors read and approved the final manuscript.

Corresponding author

Correspondence to He Shaojun.

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Ethics approval and consent to participate

This study was approved by the Animal Care and Use Committee of Anhui Science and Technology University.

Conflict of interest

The authors declare no competing interests.

Additional information

Ding Jinxue and Sun Shiang are co-first authors of the article.

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Jinxue, D., Shiang, S., Kai, S. et al. Sex-based responses of heat stress and subsequent recovery on the growth performance, metabolic changes, and redox status of broilers at market age. Int J Biometeorol 67, 1669–1677 (2023). https://doi.org/10.1007/s00484-023-02529-w

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  • DOI: https://doi.org/10.1007/s00484-023-02529-w

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