Funding for this research was provided by:
International Foundation for Science (IFS), Sweden (B/5806-1)
German Academic Exchange Service (DAAD): In-Country Scholarship Program Sudan (91602000)
Internal funds of the FU Berlin
Text and Data Mining valid from 2020-03-02
Received: 3 October 2019
Accepted: 17 February 2020
First Online: 2 March 2020
Ethics approval and consent to participate
: Ethical approval to conduct the trials of this study was obtained from Research and Ethics Committee at the Faculty of Veterinary Science, University of Nyala, Sudan (Ref. UN/FVS/1/34). For the field trials, informed verbal consent was obtained from the farmers. Verbal consent was chosen since a large proportion of the local rural population are illiterates. This proceeding was approved by the Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.