Review on Emerging and Reemerging Microbial Causes in Bovine Abortion

Abstract

Abstract:This review summarizesemergingand re-emergingmajor bacterial, fungal, viral and protozoan causes of abortion in cattle. The clinical presentations of disease due to reproductive pathogens are emphasized, with afocus on assisting development of complete lists of major causes that result in abortion in cattle. Clinicians areencouraged to assess clinical presentation, create complete lists of differential diagnoses, obtain appropriate diagnostic samples, maximize diagnostic laboratory support, and avoid zoonotic infections resulting from reproductive pathogens of animals. Thefoundation of an accurate diagnosis of reproductive loss due to infectious pathogens facilitates the prudent use of immunization andbiosecurity to minimize reproductive losses.

Review of common causes of abortion in dairy cattle in Ethiopia

“…Infectious causes of abortion associated with abortion in cattle include viruses, bacteria, protozoa and fungus. The exact proportion of cases due to infectious agents is not known, but in 90% of cases in which an etiologic diagnosis is achieved, the cause is infectious (Parthiban et al, 2015). These pathogens can result in extensive economic losses, indicating the need for control measures to prevent infection or disease (Givens and Marley, 2008).…”

“…Infected cow usually abort between the fifth and seventh month of pregnancy. Abortion due to brucellosis commonly occurs during the last trimester of pregnancy (Parthiban et al, 2015). All these manifestations lead to losses in the production system.…”

“…In cattle, leptospirosis has been characterized by a wide variety of conditions including fever, icterus, hemoglobinuria, abortion and death. Cattle are the maintenance hosts for Leptospira serovar hardjo and Leptospira borgpeter-senii serovar hardjo, and incidental hosts for serovar pomona which is maintained in swine (Parthiban et al, 2015). Tulu et al 3 Leptospirosis can be transmitted either directly between hosts or indirectly in the environment.…”

“…The organism may cause abortion from 4 months to term. Other species of molds and yeasts have been associated with abortion (Parthiban et al, 2015).…”

Leptospirose Em Propriedade Rural Com Histórico De Aborto Em Vacas Leiteiras No Município De Trindade, Estado De Goiás –Relato De Caso

“…A infecção por L. hardjo está associada à ocorrência de infertilidade, abortos a partir do quarto mês de gestação e nascimento de bezerros fracos. Os abortos decorrentes da infecção por L. pomona comumente ocorrem no último trimestre gestacional (ANDERSON, 2007;PARTHIBAN et al, 2015), assim como os abortos que ocorreram na propriedade.…”