Digestive strongyles are parasitic diseases caused by strongylid nematodes that include a number of parasitic species, (such as Haemonchus, Ostertagia, Trichostrongylus, Cooperia, Nematodirus, Bunostomum
, Oesophagostomum, etc.) and are among the bovine parasites most commonly encountered in temperate regions.
ceylanicum, Uncinaria stenocephala, and Bunostomum
phlebotomum are involved less frequently.
Raza et al.(2013) reported that age-wise prevalence of different GI nematodes in calf like Toxocara vitulorum was 25.64% while in adult animal it was 8.19%, Oesophagostomum radiatum was 2.56% in calf as compared in adult animal (3.27%), Haemonchus placei was 2.56% in calf as compared to adult (0%) and Bunostomum
phlebotomum was 2.56% in calf compared to adult (1.63%).
In another study conducted by Bacha and Haftu, (2014), it was found that out of a total 184 positive samples for helminths, 57.97% were infested with single genera of gastro-intestinal nematodes and coccidian, which included: ostertagia (1.8%), oesophagostomum (1.3%), strongloid (2.6%), Trychostrongylus (3.6%), hemonchus (11.7%) and Bunostomum
spatulata, Trichostrongylus axei, Trichostrongylus colubriformis, Bunostomum
phebotomum, Strongyloides papillosus, Trichuris discolor e Capillaria bovis), o baixo numero de bovinos do grupo controle parasitados pelas referidas especies impossibilita inferir sobre os resultados de eficacia ou a comparacao estatistica das contagens medias de cada uma dessas especies de helminto entre grupos tratados e controles em questao (Tabela 1).
Goats like other grazing animals are infested with large number of gastrointestinal nematodes such as stomach worms, Haemonchus spp., (bloodsucking worms) that cause anaemia and weight loss and Trichostrongylus axei which causes gastritis, diarrhoea and weight loss; worms of the small intestine such as Trichostrongylus colubriformis and Cooperia spp., heavy infestations of which cause diarrhoea, loss of condition and loss of appetite; Bunostomum
and Gaigeria, hookworms of small intestine, which can cause anaemia, diarrhoea and loss of condition and Oesophagostomum spp.
Zhao, "Characterization of Bunostomum
trigonocephalum and Bunostomum
phlebotomum from sheep and cattle by internal transcribed spacers of nuclear ribosomal DNA," Research in Veterinary Science, vol.
S p e c i e s r e c o r d e d w e r e Fasciola hepatica, Fasciola gigentica, Toxocara vitulorum, Paramphistomum cervi, Monezia expansa, Monezia bendeni, Oesophagostomum radiatum, Haemonchus placei and Bunostomum
phlebotomumn in cattle, an overall prevalence of helminths was 51% (255/500).
Os parasitas de maior importancia para os bovinos pertencem aos Generos : Ostertagia, Haemonchus, Trichostrongylus, Cooperia, Nematodirus e Bunostomum
For cattle, however, Oesophagostomum radiatum, Bunostomum
phlebotomum, Cooperia pectinata and Schistosoma bovis were the most significant in view of their prevalence (9.2 to 25.1%).
Also in other study revealed that Ivermectin at the dose of 0.5 mg/kg/BW were effective on Haemonchus contortus, Oesphagustomum columbianum, Bunostomum
phlebostomum and Thalazia species [1,3,6,10,12].