Banca de DEFESA: JANA KELLY DOS SANTOS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JANA KELLY DOS SANTOS
DATE: 01/02/2023
TIME: 08:00
LOCAL: meet.google.com/bdk-rnsj-qxo
TITLE:

SEROPREVALENCE OF INFECTION WITH BOVINE ALPHAHERPESVIRUS 1 (BoAHV-1), BOVINE VIRAL DIARRHEA VIRUS (BVDV), SCHMALLENBERG VIRUS (SBV) AND Leptospira spp. IN CATTLE IN THE STATE OF ALAGOAS, BRAZIL

 

KEY WORDS:

abortion; exotic disease, diarrhea; elisa; leptospirosis malformation, rhinotracheitis; seroagglutination; vector, zoonosis

PAGES: 101
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Medicina Veterinária Preventiva
SPECIALTY: Doenças Infecciosas de Animais
SUMMARY:

The objective of this research was to carry out a serological study of infections by Bovine Herpesvirus (BoAHV-1), Bovine Viral Diarrhea Virus (BVDV), Schmallemberg Virus (SBV) and Leptospira spp. in cattle raised in the State of Alagoas. 460 samples from the Agricultural Defense Agency of Alagoas-ADEAL collection were analyzed, coming from unvaccinated cattle from 100 properties distributed in 99 municipalities in Alagoas and in the three mesoregions of Alagoas: Agreste, Leste and Sertão. The serological diagnosis was performed with commercial indirect and competitive Enzyme Assay (ELISA) kits and through the microagglutination test in dark field. Seropositivity of 75% (345/460) for BoAHV-1, 53.2% (245/460) for BVDV and 36.5% (168/460) for Leptospira spp. The variation in prevalence by property in each mesoregion ranged from 85.1% (21/24) to 93.8% (46/49) for BoAHV-1; 70.3% (19/27) to 83.3% (20/24) for BVDV and 65.5% (32/49) to 83% (20/24) for Leptospira spp. It was observed that 0.87% (4/460) of the samples were suspected in the indirect ELISA for SBV. Of these, only 0.02% (1/460) continued to be suspected after performing the competitive ELISA. There was a higher seropositivity for BoAHV-1, BVDV and Leptospira spp., 61.4% (212/345), 60.4% (148/245), 52.3% (88/188) respectively, in animals from from the East mesoregion, with a significant association for BoAHV-1 and BVDV (p<0.005). BoAHV-1 and BVDV co-infection was observed in 44.78% (206/460) of the analyzed samples, BoAHV-1 and Leptospira spp. in 26.52% (122/460), BVDV and Leptospira spp. 20.22% (93/460), and BoAHV-1, BVDV and Leptospira spp. 16.96% (78/460). The serovars of Leptospira spp. most prevalent were 19.56% (90/460) Tarassovi, 15.87% (73/460) Wolfii, 15.22% (70/460) Prajitino and 13.26% (61/460) Bovis. Co-infection was found in 44.78% (206/460) of the analyzed samples. It is suggested the integrated action of the official defense agencies with the implementation of a specific sanitary program for infections by BoAHV-1, BVDV and Leptospira spp., aiming at diagnostic monitoring, the gradual elimination of positive animals, vaccination and biosecurity measures, to minimize the economic and health impacts on herds and carrying out other studies that include viral isolation in ruminants and vectors are important to confirm the circulation of the agent.

COMMITTEE MEMBERS:
Interno - JOSE WILTON PINHEIRO JUNIOR
Interno - RINALDO APARECIDO MOTA
Externa ao Programa - 1647041 - RITA DE CASSIA CARVALHO MAIA - UFRPEExterno à Instituição - ALONSO PEREIRA SILVA FILHO - UFAL
Externa à Instituição - KARLA PATRICIA CHAVES DA SILVA - UFAL