Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil
Introduction: A feedlot is an intensive farming system for finishing livestock. Bovine respiratory disease (BRD) is a cause of morbidity and mortality in beef cattle, especially in feedlots. Methodology: This study investigated the morbidity and mortality of BRD in a beef cattle feedlot in south...
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The Journal of Infection in Developing Countries
2017-10-01
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| Series: | Journal of Infection in Developing Countries |
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| Online Access: | https://jidc.org/index.php/journal/article/view/9296 |
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| author | Anderson Lopes Baptista Amanda Lima Rezende Pedro de Almeida Fonseca Rodrigo Pelisson Massi Geison Morel Nogueira Layane Queiroz Magalhães Selwyn Arlington Headley Guilherme Lobato Menezes Amauri Alcindo Alfieri João Paulo Elsen Saut |
| author_facet | Anderson Lopes Baptista Amanda Lima Rezende Pedro de Almeida Fonseca Rodrigo Pelisson Massi Geison Morel Nogueira Layane Queiroz Magalhães Selwyn Arlington Headley Guilherme Lobato Menezes Amauri Alcindo Alfieri João Paulo Elsen Saut |
| author_sort | Anderson Lopes Baptista |
| collection | DOAJ |
| description |
Introduction: A feedlot is an intensive farming system for finishing livestock. Bovine respiratory disease (BRD) is a cause of morbidity and mortality in beef cattle, especially in feedlots.
Methodology: This study investigated the morbidity and mortality of BRD in a beef cattle feedlot in southeastern Brazil using: clinical diagnoses, therapy, morbidity, and mortality. Pulmonary fragments were collected from five steers, on feed from 3-32 days, with lesions of pneumonia for identification of BRD infectious agents PCR.
Results: 188,862 steers were on feed and morbidity was 7.05% (13,315/188,862), mortality 0.64% (1,214/188,862). The causes of morbidity were: BRD (6.13%), lameness (0.29%), trauma (0.21%), clostridiosis (0.13%) and polioencephalomalacia, PEM (0.12%). The causes of mortality were: BRD (0.21%), trauma (0.17%), and clostridiosis (0.13%). When all sick cattle were considered (n=13,315), BRD (86.9%) was the principal cause of morbidity, followed by lameness (4.13%), trauma (3.05%), and clostridiosis (1.82%). The cost of BRD-associated cattle mortality and morbidity was estimated at $14,334.00/10,000 and $16,315.40/10,000 respectively. It was projected that the economic effects due to BRD-associated morbidity in Brazil were $6.31 million/annum, while losses due to mortality were $5.54 million, resulting in an annual loss of $11.85 million. Coinfections in cattle with pneumonia due to Mannheimia haemolytica and Pasteurella multocida were identified in 4/5 steers tested.
Conclusions: This is the first longitudinal study that investigated the incidence of BRD in feedlot cattle from Brazil, and the results herein described indicate that BRD contributed significantly to the development of mortality and morbidity of cattle on feed.
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| format | Article |
| id | doaj-art-9b66aefcd73b4e8abc5c0caeb20342aa |
| institution | DOAJ |
| issn | 1972-2680 |
| language | English |
| publishDate | 2017-10-01 |
| publisher | The Journal of Infection in Developing Countries |
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| series | Journal of Infection in Developing Countries |
| spelling | doaj-art-9b66aefcd73b4e8abc5c0caeb20342aa2025-08-20T02:57:45ZengThe Journal of Infection in Developing CountriesJournal of Infection in Developing Countries1972-26802017-10-01111010.3855/jidc.9296Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern BrazilAnderson Lopes Baptista0Amanda Lima Rezende1Pedro de Almeida Fonseca2Rodrigo Pelisson Massi3Geison Morel Nogueira4Layane Queiroz Magalhães5Selwyn Arlington Headley6Guilherme Lobato Menezes7Amauri Alcindo Alfieri8João Paulo Elsen Saut9Universidade Federal de Uberlândia, Minas Gerais, BrazilUniversidade Federal de Uberlândia, Minas Gerais, BrazilUniversidade Federal de Uberlândia, Minas Gerais, BrazilUniversidade Estadual de Londrina, Paraná, BrazilUniversidade Federal de Uberlândia, Minas Gerais, BrazilUniversidade Federal de Uberlândia, Minas Gerais, BrazilUniversidade Estadual de Londrina, Paraná, BrazilUniversidade Federal de Uberlândia, Minas Gerais, BrazilUniversidade Estadual de Londrina, Paraná, BrazilUniversidade Federal de Uberlândia, Minas Gerais, Brazil Introduction: A feedlot is an intensive farming system for finishing livestock. Bovine respiratory disease (BRD) is a cause of morbidity and mortality in beef cattle, especially in feedlots. Methodology: This study investigated the morbidity and mortality of BRD in a beef cattle feedlot in southeastern Brazil using: clinical diagnoses, therapy, morbidity, and mortality. Pulmonary fragments were collected from five steers, on feed from 3-32 days, with lesions of pneumonia for identification of BRD infectious agents PCR. Results: 188,862 steers were on feed and morbidity was 7.05% (13,315/188,862), mortality 0.64% (1,214/188,862). The causes of morbidity were: BRD (6.13%), lameness (0.29%), trauma (0.21%), clostridiosis (0.13%) and polioencephalomalacia, PEM (0.12%). The causes of mortality were: BRD (0.21%), trauma (0.17%), and clostridiosis (0.13%). When all sick cattle were considered (n=13,315), BRD (86.9%) was the principal cause of morbidity, followed by lameness (4.13%), trauma (3.05%), and clostridiosis (1.82%). The cost of BRD-associated cattle mortality and morbidity was estimated at $14,334.00/10,000 and $16,315.40/10,000 respectively. It was projected that the economic effects due to BRD-associated morbidity in Brazil were $6.31 million/annum, while losses due to mortality were $5.54 million, resulting in an annual loss of $11.85 million. Coinfections in cattle with pneumonia due to Mannheimia haemolytica and Pasteurella multocida were identified in 4/5 steers tested. Conclusions: This is the first longitudinal study that investigated the incidence of BRD in feedlot cattle from Brazil, and the results herein described indicate that BRD contributed significantly to the development of mortality and morbidity of cattle on feed. https://jidc.org/index.php/journal/article/view/9296BRD complexbeef cattleeconomic impactsfeedlotmorbiditymortality. |
| spellingShingle | Anderson Lopes Baptista Amanda Lima Rezende Pedro de Almeida Fonseca Rodrigo Pelisson Massi Geison Morel Nogueira Layane Queiroz Magalhães Selwyn Arlington Headley Guilherme Lobato Menezes Amauri Alcindo Alfieri João Paulo Elsen Saut Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil Journal of Infection in Developing Countries BRD complex beef cattle economic impacts feedlot morbidity mortality. |
| title | Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil |
| title_full | Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil |
| title_fullStr | Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil |
| title_full_unstemmed | Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil |
| title_short | Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil |
| title_sort | bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern brazil |
| topic | BRD complex beef cattle economic impacts feedlot morbidity mortality. |
| url | https://jidc.org/index.php/journal/article/view/9296 |
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