Data/hora: 04/06/2024 01:56:05

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 28/08/1995
Data da última atualização: | 12/01/2009
Autoria: | BURDEN, D. J.; HUGHES, D. L.; HAMMET, N. C.; COLLIS, K. A.
Título: | Concurrent daily infection of calves with Fasciola hepatica and Ostertagia ostertagi.
Ano de publicação: | 1978
Fonte/Imprenta: | Research in Veterinary Science, v.25, n.3, p.302-306, 1978.
Idioma: | Inglês

Conteúdo:

Three groups of calves were infected daily with either 1500 Ostertagia ostertagi larvae,
20 Fasciola hepatica metaceracariae, or 1500 O ostertagi plus 20 F hepatica metacercari-
ae. Weekly measurements were taken of calf weight, faecal egg output, plasma  conen-
trations of albumim, plasma activities of sorbitol dehydrogenase, y glutamyl transptidae and
pepsinogen and standard haematological indices. Calves were killed either 10 or 21 week
after daily infections began. H hepatica infection had little influence on the size and struc-
ture of the O ostertagi worm population or vice versa. Mean worm burdens found at 20
weeks in those animals infected with both F hepatica and O ostertagi were 293 flakes and
20,641 nematodes. While this level of infection is similar to that seen in the disease  com-
plex in the field, there was no evidence of clinical disease or any difference in weight gain
between the groups in this experiment. Factors other than additive worm burdens are ob-
viously importantfor the expression of disease under field conditions.

Palavras-Chave: | Parasita; Parasite.
Thesagro: | Bezerro; Fascíola Hepática; Infecção.
Thesaurus Nal: | calves; infection; Ostertagia ostertagi.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (29482-1) - ADC - SP - -- - SP1061 -  - 1061 - DIS