Seroprevalence to and influence of exposure to bovine reproductive disease causative agents on pregnancy and preweaning calf survival of elk (Artiodactyla: Cervidae)
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| Format: | Artículo científico |
| Language: | en |
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Instituto de Ecología, A.C.
2018
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| author | Louis C. Bender |
| author_facet | Louis C. Bender |
| contents | Seroprevalence to and influence of exposure to bovine reproductive disease causative agents on pregnancy and preweaning calf survival of elk (Artiodactyla: Cervidae) Louis C. Bender Octavio C. Rosas-Rosas Biología Elk cattle serology causative agents reproductive disease Success of recent introductions of elk (Cervus elaphus Linnaeus, 1758) in Mexico partly depends upon elk-livestock interactions and conflicts. Disease can impact reproduction of elk and cattle, but is seldom considered in wild ruminants when reproductive output declines. We surveyed serological exposure of elk to causative agents in a bovine abortion profile (i.e., agents of brucellosis, leptospirosis, infectious bovine rhinotracheitis (IBR), bovine viral diarrhea, and neosporosis), as these diseases can negatively affect reproduction of cattle and elk, which frequently co-occur. We determined seroprevalence of exposure to these agents and used hierarchical logistic regression to model both pregnancy and lactation status (a surrogate for calf survival to weaning) as a function of population and exposure to disease causative agents. Tested elk populations were exposed to 2–4 of the agents except for Brucella abortus, which was not present. Pregnancy varied by population (P < 0.016) but not by exposure to any agent (P > 0.213). Proportion of females lactating in autumn did not vary among populations (P > 0.247) nor by exposure to any agent (P > 0.281). Exposure did not affect productivity of elk, despite exposure levels reflective of previous surveys throughout North America and low pregnancy and calf survival in some populations. Because all surveyed elk populations showed exposure to bovine herpesvirus-1 (BHV-1), IBR would be the most likely disease to be introduced with elk, although risk is low given high seroprevalence to BHV-1 among cattle in Mexico. Conversely, brucellosis is endemic in Mexico and can significantly impact productivity of elk. Thus, contracting brucellosis from cattle is the highest disease-related threat to elk introductions or translocation in Mexico. 2018 artículo científico 0065-1737 https://www.redalyc.org/articulo.oa?id=57560238002 https://www.redalyc.org/journal/575/57560238002/ https://www.redalyc.org/journal/575/57560238002/html/ https://www.redalyc.org/journal/575/57560238002/57560238002.epub https://www.redalyc.org/journal/575/57560238002/movil 10.21829/azm.2018.3411178 en http://www.redalyc.org/revista.oa?id=575 Acta Zoológica Mexicana (nueva serie) application/pdf Instituto de Ecología, A.C. Acta Zoológica Mexicana (nueva serie) (México) Vol.34 |
| format | Artículo científico |
| id | redalyc_57560238002 |
| language | en |
| publishDate | 2018 |
| publisher | Instituto de Ecología, A.C. |
| spellingShingle | Seroprevalence to and influence of exposure to bovine reproductive disease causative agents on pregnancy and preweaning calf survival of elk (Artiodactyla: Cervidae) Louis C. Bender Biología Elk cattle serology causative agents reproductive disease Seroprevalence to and influence of exposure to bovine reproductive disease causative agents on pregnancy and preweaning calf survival of elk (Artiodactyla: Cervidae) Louis C. Bender Octavio C. Rosas-Rosas Biología Elk cattle serology causative agents reproductive disease Success of recent introductions of elk (Cervus elaphus Linnaeus, 1758) in Mexico partly depends upon elk-livestock interactions and conflicts. Disease can impact reproduction of elk and cattle, but is seldom considered in wild ruminants when reproductive output declines. We surveyed serological exposure of elk to causative agents in a bovine abortion profile (i.e., agents of brucellosis, leptospirosis, infectious bovine rhinotracheitis (IBR), bovine viral diarrhea, and neosporosis), as these diseases can negatively affect reproduction of cattle and elk, which frequently co-occur. We determined seroprevalence of exposure to these agents and used hierarchical logistic regression to model both pregnancy and lactation status (a surrogate for calf survival to weaning) as a function of population and exposure to disease causative agents. Tested elk populations were exposed to 2–4 of the agents except for Brucella abortus, which was not present. Pregnancy varied by population (P < 0.016) but not by exposure to any agent (P > 0.213). Proportion of females lactating in autumn did not vary among populations (P > 0.247) nor by exposure to any agent (P > 0.281). Exposure did not affect productivity of elk, despite exposure levels reflective of previous surveys throughout North America and low pregnancy and calf survival in some populations. Because all surveyed elk populations showed exposure to bovine herpesvirus-1 (BHV-1), IBR would be the most likely disease to be introduced with elk, although risk is low given high seroprevalence to BHV-1 among cattle in Mexico. Conversely, brucellosis is endemic in Mexico and can significantly impact productivity of elk. Thus, contracting brucellosis from cattle is the highest disease-related threat to elk introductions or translocation in Mexico. 2018 artículo científico 0065-1737 https://www.redalyc.org/articulo.oa?id=57560238002 https://www.redalyc.org/journal/575/57560238002/ https://www.redalyc.org/journal/575/57560238002/html/ https://www.redalyc.org/journal/575/57560238002/57560238002.epub https://www.redalyc.org/journal/575/57560238002/movil 10.21829/azm.2018.3411178 en http://www.redalyc.org/revista.oa?id=575 Acta Zoológica Mexicana (nueva serie) application/pdf Instituto de Ecología, A.C. Acta Zoológica Mexicana (nueva serie) (México) Vol.34 |
| title | Seroprevalence to and influence of exposure to bovine reproductive disease causative agents on pregnancy and preweaning calf survival of elk (Artiodactyla: Cervidae) |
| topic | Biología Elk cattle serology causative agents reproductive disease |
| url | https://www.redalyc.org/articulo.oa?id=57560238002 https://www.redalyc.org/journal/575/57560238002/ https://www.redalyc.org/journal/575/57560238002/html/ https://www.redalyc.org/journal/575/57560238002/57560238002.epub https://www.redalyc.org/journal/575/57560238002/movil |