Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil: transitional antibody observation

被引:2
|
作者
Sousa, Larissa Nascimento [1 ]
Batista, Samira Pereira [1 ]
Silva, Samara Santos [1 ]
da Silva, Romulo Fylipe [2 ]
Sarmento, Wlysse Ferreira [2 ]
Mota, Rinaldo Aparecido [3 ]
Lima Brasil, Arthur Willian [4 ]
Amaku, Marcos [5 ]
Feitosa, Thais Ferreira [2 ]
Ribeiro Vilela, Vinicius Longo [1 ,2 ]
机构
[1] Fed Univ Campina Grande UFCG, Postgrad Program Anim Sci, Patos de Minas, Paraiba, Brazil
[2] Fed Inst Paraiba IFPB, Dept Vet Med, Ave Presidente Tancredo Neves S-N, BR-58800970 Sousa, Paraiba, Brazil
[3] Fed Rural Univ Pernambuco UFRPE, Postgrad Program Anim Biosci, Recife, PE, Brazil
[4] Fed Univ Paraiba UFPB, Dept Morphol, Joao Pessoa, Paraiba, Brazil
[5] Univ Sao Paulo, Fac Med, Sao Paulo, SP, Brazil
关键词
abortion; goat farming; epidemiology; longitudinal; toxoplasmosis; GRANDE-DO-NORTE; NEOSPORA-CANINUM; PROTOZOAN INFECTIONS; ECONOMIC IMPORTANCE; RISK-FACTORS; SHEEP; IMMUNOGLOBULIN-G1; SEROPREVALENCE; EPIDEMIOLOGY; DIAGNOSIS;
D O I
10.1007/s11259-021-09878-0
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
This study aimed to describe the transmission of T. gondii in naturally infected goats in the semiarid region of northeastern Brazil, through evaluating the serological status of these animals from one to 12 months of age. Seven goat farms were selected. During the first visit, an epidemiological questionnaire was applied. Blood samples were collected from pregnant goats and from their female offspring every month, to monitor them for anti-T. gondii antibodies, using the indirect fluorescence antibody test (IFAT). Out of 66 pregnant goats evaluated, 47% (31/66) (95% CI: 34.6% - 59.7%) were positive and out of 93 female offspring, 61.3% (57/93) (95% CI: 52.4% - 69.2%) were positive, in at least one month during the evaluation period. Among the positive female offspring, 43.3% (27/57) (95% CI: 39.7% - 56.9%) presented environmental infection and 56.7% (30/57) (95% CI: 43.4% - 66.3 %) probably had only colostral antibodies or vertical transmission. It was observed that 92,6% (25/27) from environmental infections occurred until reproductive age (six months) (p<0.0001). It was also noted that there is a correlation between the titration of mothers and offspring, until four months of age (p<0.0001). Large fluctuations in the presence of antibodies were observed among the animals over the months monitored. It can be concluded that the prevalence of anti-T. gondii antibodies within the herds was greater than what has been expressed in specific prevalence studies and that most goat become infected up to the six months of life in the studied area.
引用
收藏
页码:507 / 515
页数:9
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