Banca de DEFESA: THANIELLE NOVAES FONTES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : THANIELLE NOVAES FONTES
DATA : 04/02/2019
HORA: 14:00
LOCAL: Sala 205 - EMEVZ/UFBA
TÍTULO:

Outbreaks of enzootic ataxia in goats and sheep from the state of Bahia

PALAVRAS-CHAVES:

Copper, small ruminants, deficiency, semiarid.

PÁGINAS: 60
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
SUBÁREA: Patologia Animal
ESPECIALIDADE: Anatomia Patologia Animal
RESUMO:

The objective of this study was to describe for the first time the clinical-epidemiological, laboratory and pathological aspects of different forms of enzootic ataxia in goats and lambs in the state of Bahia, as well as to propose an emergency oral treatment with copper sulfate in an individualized way for neonates. Three outbreaks of enzootic ataxia were studied. The history, clinical signs and epidemiological data were obtained from the owners and checked during the visits. The first outbreak (PS) occurred in 2013 in a property located in the municipality of Itaberaba and affected a herd composed of 90 goats and 130 sheep. The second outbreak (SS) occurred in 2014 in the municipality of Santa Luz and affected a herd of 90 goats and 110 sheep. The third outbreak (TS) occurred in 2018, in a property located in the same municipality of SS, being the herd constituted by 80 sheep. Blood samples were collected from goats and sheep treated for serum copper dosage. Nine animals (five goats and four sheep) that presented a more severe clinical picture and unfavorable prognosis were necropsied for diagnostic confirmation. During the necropsy of the PS, SS and TS animals liver samples were collected for hepatic copper dosage. At the site where SS occurred, samples of soil and the main forages where the animals were kept were collected to determine copper, iron, molybdenum, sulfur and zinc contents. The clinical and histopathological findings of the three outbreaks studied were classics of enzootic ataxia. In the outbreaks studied, the prevalence of enzootic ataxia was higher in kids (68) than in lambs (46) and presented high case fatality rates of 84.3% and 92.2%, respectively. The mean values of serum copper (PS, SS and TS) and hepatic (PS and SS) of goats (serum - 0.05mg / kg, hepatic - 2.88mg / kg) and sheep (serum - 0.015mg / kg) is much lower than the reference values, being at least 12 times lower in goats and 40 times in sheep. The levels of iron and sulfur were high in the fodder of the property where SS occurred, already in the soil, iron levels were high and copper levels were reduced. The palliative treatment of neonatal goats and lambs with two doses of oral copper sulfate at a dose of 20 mg / kg in the first and second week of life was effective in the prevention of enzootic ataxia in neonates and can be used for emergency control of the disease. The occurrence of enzootic ataxia (congenital and late form) in goats and sheep was first reported in Bahia. It is also worth noting that this disease caused by copper deficiency has caused great economic damage to the breeders of small ruminants, mainly due to the high mortality of the affected animals.

MEMBROS DA BANCA:
Interno - 1489010 - ALESSANDRA ESTRELA DA SILVA LIMA
Externo ao Programa - 2983353 - MOISES DIAS FREITAS
Presidente - 1774838 - TIAGO DA CUNHA PEIXOTO
Externo à Instituição - VITOR SANTIAGO DE CARVALHO - UFBA