Control of bovine gastrointestinal nematode parasites using pellets of the nematode-trapping fungus Monacrosporium thaumasium

Ciência Rural

Jackson Victor De Araújo²  Marcos Pezzi Guimarães¹  Artur Kanadani Campos²  Nilo Chaves De Sá²  Priscilla Sarti²  Rafaela Carolina Lopes Assis² 

[1] ,Universidade Federal de Viçosa Departamento de Veterinária Viçosa MG ,Brazil

关键词: biological control;    Monacrosporium thaumasium;    nematodes;    nematophagous fungi;    pellets;    bovine;    controle biológico;    Monacrosporium thaumasium;    nematóides;    fungos nematófagos;    pellets;    bovinos;   

DOI  :  10.1590/S0103-84782004000200019

来源: SciELO

【 摘 要 】

The viability of a formulation of the fungus Monacrosporium thaumasium associated with ivermectin was evaluated for the biological control of bovine gastrointestinal nematode parasites. Four groups of five calves each were placed in pastures with a stocking rate of 1.6 animal/hectare. In group 1 (control), the calves did not receive any treatment. In group 2, each animal received 20g of pellets of M. thaumasium orally twice a week during a six-month period that began with the onset of the rainy season (October 23, 2000). In group 3, each animal received 20g of pellets of M. thaumasium orally twice a week during the same period as 2, as well as two strategic treatments with ivermectin (200 mcg/kg) on May 10, 2001 and July 5, 2001. In group 4, the animals were treated with ivermectin alone as described for group 3. EPG counts for group 1 were significantly greater (P< 0.01) than those for groups 2 and 3 and the difference at the end of the study period was near 100%. The EPGs of group 4 animals remained high until the first strategic treatment with ivermectin. Values for groups 1 and 4 differed significantly (P< 0.05) from those of groups 2 and 3 from December 2000 onwards. It was concluded that the use of this dose and periodicity of application of M. thaumasium pellets makes the application of anthelminthic treatments unnecessary.

【 授权许可】

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