Original work |
Reviews, letters, editorials, conference abstracts, and vaccination trials |
Field/experimental studies: diagnosis, prevalence, and epidemiology |
Lab/bench studies (basic research) |
Studies performed on samples from farms or slaughterhouses |
All other locations |
Direct samples from animals |
Others, such as surfaces, food, water, etc. |
Infectious causes related to infertility |
Other causes related to infertility (e.g., nutritional deficiencies (Kenny & Byrne, 2018)) |
Studies performed in herds of males or both males and females (in which bulls were analyzed) |
Study performed exclusively in female herds or mixed herds in which the results were not sex-defined were excluded |
English language |
Other languages |