FARIAS, A. E. M.; http://lattes.cnpq.br/2391665020141671; FARIAS, Areano Ethério Moreira de.
Abstract:
This thesis consists of three chapters. In Chapter I, the frequency of anti-
Corynebacterium pseudotuberculosis antibodies was determined in five of the nine
states that compose the Northeast region of Brazil. Serum samples of 2571 goats from
218 farms were collected between 2010 and 2012. The diagnosis of Caseous
Lymphadenitis (CL) was performed by indirect ELISA-technique. The prevalence of
88.5% (193/218) of the properties and 30.4% (783/2571) of seropositive goats suggests
that CL is widespread in the Brazilian Northeast herds. Among the reproducers and
matrices tested, 37.9 and 42.1% presented positive serology for C. pseudotuberculosis,
respectively. Among young goats, 8.9% were seropositive for CL, and a statistical
difference was observed in the frequency of sopositivity obtained between adults and
young adults (P <0.001). It reinforces the need for diagnosis of the disease in goat herds
in the Northeast region for possible implementation of programs of control and more
precise measurements in the management of CL. The seroprevalence of positive
properties, seropositive animals and the evaluation of possible risk factors for CL were
determined in five states in the Northeast region of Brazil (Ceará, Paraíba, Piauí, Rio
Grande do Norte, and Sergipe). A total of 2744 goat serum samples from 230 farms
were diagnosed using the ELISA-indirect technique for CL. 87.8% of the properties and
30.3% of the goats evaluated were seropositive for CL. They were identified as risk
factors, the absence of feed silo (O.R. = 5.39); not to separate the animals by sex (O.R.
= 4.16); do not separate the animals by age (O.R. = 6.30); do not change the breeder
when very old (O.R. = 7.80) and do not treat the core after it breaks (O.R. = 10,34). It
reinforces the need for more specific control measures, such as the use of serological
tests; treatment of the affected animals and their residues and the non-introduction of
CL animals in the herds. In chapter III, in the face of the great importance of
caprinocultura in the Brazilian Northeast, the research sought to describe the
characteristics of the caprinocultura productive system for the Brazilian Northeast, the
research was carried out in 230 rural properties of 62 municipalities, by application of
epidemiological questionnaire, searching information economic, productive and social
aspects of the owners / properties. The observed production system was characterized as
familiar and subsistence, for domestic consumption and local commerce, with low level
of technification, as well as investments and technical assistance, insufficient or
inadequate for the full development of activity in the region. It is suggested that these
aspects be taken into account in the planning of future public policies aimed at
development for goat breeding in this region, especially when related to financing and
technical assistance for breeders.