Funding for this research was provided by:
Received: 16 June 2021
Accepted: 20 December 2021
First Online: 7 January 2022
Change Date: 14 February 2022
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s12917-022-03168-w
: The project was approved by the Ethics Committee for Animal Rights Protection of the Leipzig District Government (No. TVV 17/19) in accordance with German legislation for animal rights and welfare.The horses were owned by the Institute of Animal Nutrition, Nutrition Diseases and Dietetics under the responsibility of Ingrid Vervuert (corresponding author).
: All authors gave their final approval of the manuscript.
: The authors have declared no competing interests.