Funding for this research was provided by:
National Research Centre, Dokki, Egypt (10120801)
Received: 22 January 2020
Accepted: 4 June 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: The experimental design on buffalo bulls and their ejaculates has been approved by the Medical Research Ethics Committee at the National Research Centre, Egypt under the license no. 17/155.
: The authors declare that they have no competing interests.