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Analyses of the gut microbial ecology of weaning piglets and laying hens – understanding the impacts of glyphosate via feed residues exposure.

PhD defence, Friday 5 February 2021, Sundas Rani

2021.02.05 | Helle Mitzi Thomsen Reichl

Sundas Rani

During her studies, Sundas Rani investigated the impacts of glyphosate on the gastrointestinal microbial communities of weaning piglets and laying hens via feed residues. The gastrointestinal tracts of mammals is inhabited by a diverse and abundant microbiota, their natural balance is significant for performance and health. Glyphosate can influence the natural balance of microbial communities in the gastrointestinal tracts due to its ability to interfere with the synthesis of aromatic amino acids by inhibiting the shikimate pathway present in microorganisms. Sundas Rani performed the in vivo analysis of the gastrointestinal samples through 16S rRNA gene sequencing using the Illumina MiSeq platform.

The new research findings contribute to the understanding the potential of glyphosate to induce dysbiosis in the gastrointestinal tract leading to health implications, including diarrhea, when exposed to different doses of glyphosate in the presence of sufficient and reduced tryptophan levels.

The PhD degree was completed at Department of Animal Sciences, Faculty of Health, Aarhus University.

This summary was prepared by the PhD student.

Time: Friday 5 February 2021 at 10:00
Place: The PhD defence will be held online. To receive a link to the event, please send an e-mail to Charlotte Steffensen; charlotte.steffensen@anis.au.dk

Title of dissertation:  Impact of glyphosate feed residues on the gastrointestinal microbial ecology of newly weaned piglets and laying hens
Contact information:  Sundas Rani, e-mail: sundas@anis.au.dk, tel.: +4591427360

Members of the assessment committee:

Professor (emeritus), Jan Erik Lindberg, Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala, Sweden

Associate professor, Peter Roslev, Section of Biology and Environmental Sciences, Department of Chemistry and Bioscience, Aalborg University, Denmark

Senior researcher, Mogens Vestergaard (chair), Department of Animal Science, Aarhus University

Main supervisor

Senior scientist, Ole Højberg, Department of Animal Science, Aarhus University

Senior scientist, Martin Tang Sørensen, Department of Animal Science, Aarhus University

Language: The PhD dissertation will be defended in English

The defence is public.

Due to the coronavirus situation, the PhD thesis will not be available for reading at the offices of the PhD administration. Instead, interested parties may send an e-mail to gradschool.tech@au.dk to receive a digital copy of the PhD thesis. Please note, it may in certain cases be necessary to make an individual arrangement to read the PhD thesis    

PhD defence
17427 / i43