Flock-level risk factors associated with Neospora caninum seroprevalence in dairy goats in a semiarid region of Northeastern Brazil

A cross-sectional study based on planned sampling was carried out to determine flock-level risk factors associated with Toxoplasma gondii antibody prevalence in dairy goat flocks in a semiarid region of northeastern Brazil. Serum samples from 975 adult dairy goats from 110 flocks were examined by indirect immonufluorescent antibody test (IFAT), using cut-off point at 1:64 dilution. From the 110 flocks, 77 presented at least one seropositive animal, corresponding to a prevalence of 70% (95% CI: 60.5-78.4%). Out of the 975 animals, 177 (18.1%; 95% CI = 15.8-20.7%) tested positive. The presence of toxic plants (OR = 5.11; P = 0.045) and the fact that goat breeding is not the main activity on the farm (OR = 3.34; P = 0.014) were identified as risk factors. The results of the present study showed evidence of the presence of T. gondii infection in dairy goats from a semiarid region of northeastern Brazil using planned sampling. Further studies are needed to elucidate the importance of the identified risk factors in the epidemiology of the infection.

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Epidemiological characterization and risk factors associated with leptospirosis and brucellosis in small ruminants sold at animal fair in the Sertão Region of Pernambuco State, a semiarid Region of Northeastern Brazil

Semina Ciências Agrárias ◽

10.5433/1679-0359.2017v38n4p1933 ◽

2017 ◽

Vol 38 (4) ◽

pp. 1933 ◽

Cited By ~ 1

Author(s):

José Romero Alexandre Alves ◽

Geilson Manoel de Souza Lima ◽

José Dêvede da Silva ◽

Diego Figueiredo da Costa ◽

Fabrine Alexandre dos Santos ◽

...

Keyword(s):

Risk Factors ◽

Odds Ratio ◽

Management System ◽

Small Ruminants ◽

Northeastern Brazil ◽

Semiarid Region ◽

Intensive Management ◽

Serum Samples ◽

Factors Associated ◽

Leptospira Spp

The transit of infected animals may be a route for the introduction and dispersal of diseases, which necessitates protocols for the controlled entry of infected animals into herds. The objective of this study was to determine the prevalence of anti-Leptospira and anti-Brucella ovis antibodies in small ruminants sold at an animal fair in the Sertão region of the Pernambuco State, Northeastern Brazil, and to identify the possible risk factors associated with seropositivity. Serum samples were collected from 233 goats and 119 sheep, belonging to twelve different owners from November 2014 to June 2015. Diagnosis of Leptospira spp. infection was established using the microscopic agglutination test (MAT); for B. ovis infection, the agar gel immuno-diffusion (AGID) test was conducted. A total of 16/233 (6.87%; 95% CI = 4.27% – 10.83%) goats and 16/119 (13.45%; 95% CI = 8.67% – 21.24%) sheep were identified as seropositive for Leptospira spp. The most frequent serotype was Icterohaemorrhagiae. In goats, intensive management system (odds ratio = 15.8; p < 0.001) and consorted rearing of equines and goats (odds ratio = 7.3; p = 0.005) were identified as risk factors. There were no risk factors identified for sheep. Seven (5.88%; 95% CI = 2.88% – 11.65%) sheep were seropositive for B. ovis, and the intensive management system was identified as the risk factor (odds ratio = 11.5; p = 0.005). This suggests that Leptospira spp. and B. ovis infections occur in small ruminants commercialized in the Sertão region of the Pernambuco State. Thus, improvements to the sanitary conditions of the facilities and the control of synanthropic rodents are recommended.

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Serological evidence and risk factors associated with Caprine herpesvirus 1 in dairy goat flocks in a semiarid region of northeastern Brazil

Journal of Veterinary Diagnostic Investigation ◽

10.1177/1040638712470946 ◽

2012 ◽

Vol 25 (1) ◽

pp. 125-128 ◽

Cited By ~ 4

Author(s):

Maria L. C. R. Silva ◽

Edviges M. Pituco ◽

Adriana H. C. Nogueira ◽

Maira S. N. Martins ◽

Michele S. Lima ◽

...

Keyword(s):

Risk Factors ◽

Northeastern Brazil ◽

Dairy Goat ◽

Semiarid Region ◽

Serological Evidence ◽

Factors Associated ◽

Herpesvirus 1

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Epidemiological characterization and risk factors associated with Mycobacterium avium subsp. paratuberculosis infection in dairy goats in the Brazilian semiarid region

Semina Ciências Agrárias ◽

10.5433/1679-0359.2015v36n1p267 ◽

2015 ◽

Vol 36 (1) ◽

pp. 267 ◽

Cited By ~ 1

Author(s):

Theonys Diógenes Freitas ◽

Sérgio Santos de Azevedo ◽

Maria Luana Cristiny Rodrigues Silva ◽

Felício Garino Júnior ◽

Carolina De Sousa Américo Batista Santos ◽

...

Keyword(s):

Risk Factors ◽

Mycobacterium Avium ◽

Mycobacterium Avium Subsp ◽

Semiarid Region ◽

Dairy Goats ◽

Factors Associated ◽

Brazilian Semiarid ◽

Mycobacterium Avium Subsp Paratuberculosis ◽

Epidemiological Characterization

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Seroprevalence and risk factors associated with Chlamydophila abortus infection in dairy goats in the Northeast of Brazil

Pesquisa Veterinária Brasileira ◽

10.1590/s0100-736x2012001100002 ◽

2012 ◽

Vol 32 (11) ◽

pp. 1082-1086 ◽

Cited By ~ 5

Author(s):

Carolina S.A.B. Santos ◽

Rosa M. Piatti ◽

Sérgio S. Azevedo ◽

Clebert J. Alves ◽

Severino S.S. Higino ◽

...

Keyword(s):

Risk Factors ◽

Odds Ratio ◽

Multivariate Logistic Regression Model ◽

Semiarid Region ◽

Blood Collection ◽

Dairy Goats ◽

Cross Sectional ◽

Chlamydophila Abortus ◽

Factors Associated ◽

Seropositive Animal

Few data are available on the prevalence and risk factors of Chlamydophila abortus infection in goats in Brazil. A cross-sectional study was carried out to determine the flock-level prevalence of C. abortus infection in goats from the semiarid region of the Paraíba State, Northeast region of Brazil, as well as to identify risk factors associated with the infection. Flocks were randomly selected and a pre-established number of female goats > 12 mo old were sampled in each of these flocks. A total of 975 serum samples from 110 flocks were collected, and structured questionnaire focusing on risk factors for C. abortus infection was given to each farmer at the time of blood collection. For the serological diagnosis the complement fixation test (CFT) using C. abortus S26/3 strain as antigen was performed. The flock-level factors for C. abortus prevalence were tested using multivariate logistic regression model. Fifty-five flocks out of 110 presented at least one seropositive animal with an overall prevalence of 50.0% (95%; CI: 40.3%, 59.7%). Ninety-one out of 975 dairy goats examined were seropositive with titers >32, resulting in a frequency of 9.3%. Lend buck for breeding (odds ratio = 2.35; 95% CI: 1.04-5.33) and history of abortions (odds ratio = 3.06; 95% CI: 1.37-6.80) were associated with increased flock prevalence.

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Risk factors associated with leptospirosis in dairy goats under tropical conditions in Brazil

Research in Veterinary Science ◽

10.1016/j.rvsc.2007.03.011 ◽

2008 ◽

Vol 84 (1) ◽

pp. 14-17 ◽

Cited By ~ 21

Author(s):

Walter Lilenbaum ◽

Renato Varges ◽

Luciana Medeiros ◽

Ana Gabriela Cordeiro ◽

Amanda Cavalcanti ◽

...

Keyword(s):

Risk Factors ◽

Dairy Goats ◽

Factors Associated ◽

Tropical Conditions

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Seroprevalence and risk factors associated with infection by Neospora caninum of dairy cattle in the state of Alagoas, Brazil

Pesquisa Veterinária Brasileira ◽

10.1590/s0100-736x2012001000011 ◽

2012 ◽

Vol 32 (10) ◽

pp. 1009-1013 ◽

Cited By ~ 9

Author(s):

Maria E. Sousa ◽

J.N. Porto Wagnner ◽

Pedro P.F. Albuquerque ◽

Orestes L. Souza Neto ◽

Eduardo B. Faria ◽

...

Keyword(s):

Risk Factors ◽

Dairy Cattle ◽

Indirect Immunofluorescence ◽

Neospora Caninum ◽

Infection Risk ◽

Control Measures ◽

Risk Indicators ◽

Blood Samples ◽

Factors Associated ◽

Serological Investigation

The objective of this study was to investigate the prevalence of anti-Neospora caninum antibodies in cattle from milk producing farms of the microregion of Batalha, state of Alagoas, Brazil, as well as to identify the risk factors associated with the infection. Blood samples were collected from 1,004 cattle of 17 farms for the serological investigation regarding the presence of anti-N. caninum antibodies by the Indirect Immunofluorescence Reaction Technique (IMRT). From the total amount of samples analyzed, 77/1,004 (7.67%) were positive and 927/1,004 (92.33%) were negative. The logistical regression identified that cattle from farms without consortium breeding have an infection risk 6.33 (p<0.001; C.I. 2.89-13.10) times higher than cattle from farms with that type of breeding. Cattle from farms where the aborted fetuses are not adequately buried have an infection risk 3.04 (p<0.001; C.I. 1.64-5.63) times higher than cattle from farms with adequate destination of these fetuses. Infection by N. caninum occurs in cattle of the investigated region. The factors identified in our study can be used as risk indicators, so that control measures could be implemented to avoid infection by N. caninum in the herds of this region.

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