Banca de DEFESA: MARCIANA ANITA APPELT

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MARCIANA ANITA APPELT
DATA : 09/08/2018
HORA: 14:00
LOCAL: IFC - Campus Concórdia
TÍTULO:

Serological survey for Neospora caninum in dairy cows from the Rio do Sul Microregion, Alto Vale do Itajaí, Santa Catarina state, Brazil

PALAVRAS-CHAVES:

Neospora caninum, dairy cows, Alto Vale do Itajaí, serology

PÁGINAS: 51
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

Neospora caninum is an important intracellular parasite that causes Neosporosis, which is currently considered one of the most important diseases in the productive and reproductive sphere of cattle because it determines frequent abortions and other reproductive problems. Being this species the main intermediate host of N. caninum, it concentrates the greater damages of economic order determined by the presence of the parasite. There are several studies of the disease in Brazil, but little is known of its occurrence and prevalence in cattle both in Santa Catarina and in the Microregion of Rio do Sul, Alto Vale do Itajaí, which is a region of traditionally milk producers in the state and where reports of abortion and heat repetition have been increasing without conclusive diagnosis. The objective of this study was to identify dairy herds serologically reactive to Neospora caninum in the Rio do Sul Microregion, where blood samples were collected from 262 bovine females from 36 properties of this micro region and submitted to the Indirect Immunofluorescence Reaction (IFR) technique. The proportion of positive test results was used to calculate the observed occurrence of Neoporosis in the study region. The information on animal health and management characteristics of the sampled properties were used to evaluate possible factors that influence the risk of the diagnosis of Neospora caninum. A Bayesian logistic regression was performed using the Hamiltonian Monte Carlo algorithm (HMC), considered particularly good for use with high-dimensional models. As a result, a seropositivity of 32.6% was obtained for N. caninum in the animals collected and 94.4% of the properties sampled in the region showed at least one seropositive animal. Based on regression analysis it was shown that only the presence of dogs on farms increased the likelihood of a cow being tested positive for N. caninum (OR = 20.01 [5.21-123.12]). In this way we can affirm that the dairy females of the Microregion of Rio do Sul have elevated frequencies of anti-N IgG caninum, and the study contributed to demonstrate to professionals and producers the risks and losses caused by the existence of neosporosis in the properties, allowing the adoption of prophylactic measures that are essential for the maintenance of animals free of this disease, minimizing the economic losses generated by this disease and which is one of its most important reflections.

MEMBROS DA BANCA:
Externo à Instituição - ALEKSANDRO SCHAFER DA SILVA - EDESC
Externo à Instituição - MATHEUS PEDROTTI DE CESARO - UFSM
Presidente - 2017813 - RICARDO EVANDRO MENDES
Interno - 2408296 - SORAYA REGINA SACCO
Interno - 1081425 - TEANE MILAGRES AUGUSTO GOMES