Prevalência e variação estacionai dos nematoides gastro-intestinais em bezerros na região dos Dourados – Goiás
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Data
1973-03-30
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Ruy de Souza Lino Junior
Resumo
The aim of this paper was to determine
the prevalence and seasonal
variation of gastrointestinal helminths
in bovines Ín the region of Dourados
— a representative zone of open pastures
("cerrados") in Goiás. We nave
tried to establish the periods for control
treatment of enteroparasites in bovines
in that region.
16 female calves were used for the
experiment — 4 per each property.
4 adjoiníng properties were chosen.
The animais were examined every 30
days for 12 months (20-3-71 to
20-3-72).
Feces were obtained directly from
the rectum and examined by the Mc
Master method, aceording to Gordon
Whitlock (1939) for quantitative evaluation of eggs. Coprocultures for
qnalitative studies were performed by
the Roberts and O'Sullivan's method.
The genera were idemified according
to Keith. (1953).
It hás not been possíble, in this
study, to establish general norms for
control of enteroparasites in íhat área
owing to the different reaction of the
Dutch bovines of that region to the
nematodes.
A sudden change of management
ín farm "A" with the return of 50%
of the cattle to the farm in November,
seemed to affecí the behavior of the
enteroparasites in the calves..
It was possible, however:
1.° To establish that the genera Coopena,
Haemonchus, Strongyloidcs,
Oesophagostomus, Tritliostrongylus
and Trichuris occur in the region of
Dourados, 35 km from Goiânia.
2.° To observe a predominace of the
infection by Haemonchus and Cooperia
over the other nematodes in that
área.
3.° To attribute the first serious infection
occurring in calves Ín that region
to Strongyloidosís.
Half-breed Dutch black and white
bovines showed greater sensítivity to
nematodes than Zebu half-breeds,
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PEREIRA, Edson. Prevalência e variação estacionai dos nematoides gastro-intestinais em bezerros na região dos Dourados – Goiás. Revista de Patologia Tropical, Goiânia, v. 2, n. 1, p. 55- 61, jan./mar. 1973. Disponível em: < https://www.revistas.ufg.br/iptsp/article/view/23159/13645>.