Banca de DEFESA: ESMERINA ELANE CARNEIRO DE ALBUQUERQUE

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ESMERINA ELANE CARNEIRO DE ALBUQUERQUE
DATE: 30/09/2024
TIME: 15:00
LOCAL: Remoto - Google Meet - Link: meet.google.com/idz-bhqg-rji
TITLE:

MOLECULAR DIAGNOSIS OF TRANSPLACENTAL TRANSMISSION OF Theileria equi AND Babesia caballi IN HORSES IN THE STATE OF PERNAMBUCO

KEY WORDS:

babesiosis; equine; piroplasmosis; PCR; theileriosis; transplacental transmission.

PAGES: 49
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Medicina Veterinária Preventiva
SPECIALTY: Doenças Parasitárias de Animais
SUMMARY:

Equine piroplasmosis (EP) is an endemic disease in Brazil caused by Theileria equi and Babesia caballi, both transmitted by ticks. While many infected horses remain asymptomatic, some develop severe clinical manifestations, including acute and chronic forms. Transplacental transmission, in addition to perpetuating the infection, can lead to serious reproductive complications, such as late-term abortions and the birth of foals showing clinical signs of piroplasmosis. This study aimed to determine the frequency and evaluate the epidemiological aspects of the transplacental transmission of these hemoparasites in mares and their foals in the state of Pernambuco, Brazil. The research was conducted on a ranch with 50 Quarter Horse mares and 35 foals between 2021 and 2023. Blood samples were collected from the mares at parturition and from the foals immediately after birth and 12 hours after colostrum ingestion. The samples were subjected to hematological and parasitological tests and Polymerase Chain Reaction (PCR) for the detection of T. equi and B. caballi. DNA was extracted, and the PCR-amplified products were analyzed and sequenced. For better understanding, this dissertation was divided into a literature review and one chapter, namely: Chapter 1 “Evidence of the Transplacental Transmission of Theileria equi and Babesia caballi in Quarter Horse Foals in the State of Pernambuco.” The frequency of T. equi and B. caballi in the mares was 36% and 14%, respectively. Transplacental transmission was confirmed in 20% of the foals for T. equi and 14.28% for B. caballi. Among the foals positive for T. equi, 71.42% became negative after colostrum ingestion, and 80% of the foals positive for B. caballi also tested negative after colostrum ingestion. No clinical signs were observed in the foals, even in those that remained positive after colostrum ingestion. This study confirmed the congenital transmission of T. equi and B. caballi in mares and foals in the state of Pernambuco, highlighting the importance of monitoring and controlling these agents to prevent reproductive losses and the spread of the disease.

COMMITTEE MEMBERS:
Presidente - FRANCISCO DE ASSIS LEITE SOUZA
Externo à Instituição - GILSON SANTOS BUONORA
Externa à Instituição - JESSICA DE TORRES BANDEIRA