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Livestock producers should be aware of the causes of stress in cattle. At this time of year, pest infestations, such as horn flies, are more important due to favorable weather conditions – humidity and high temperature.
affecting health and well-being. Stress stops feeding cattle and spends a lot of time trying to get rid of the bug. The consequences are weight loss and reduced milk production
In addition to tick and worm infections, horn flies are among the major parasitic diseases in cattle. Researcher Márcia de Sena Oliveira of Embrapa Southeast Animal Husbandry in São Carlos, SP, gives some advice to the producer to protect his flock during this extremely critical period.
The fight against insecticides is complex. The inappropriate and frequent use of these chemicals promotes the selection of resistant parasites. To avoid the rapid development of resistance, the producer must take control rationally. "The idea is to control the infestation and not eradicate the horn fly, keeping a reasonable number of these pests in the herd," says the researcher.
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According to her , there are viable alternatives to reduce fly problems.
The Famous Insects of the Small Beetle, Excrement is a Good Option to Reduce Insect Breeding.
Treatment of Cattle by Category helps to maintain acceptable infestation level, especially in the most sensitive animals, such as cows with calves at the foot
Bringing traps across pastures to attract flies into the flock is a very effective and respectful method
The integration of trees into pastures can also help reduce infestations, and these alternatives must be in addition to the constant concern to keep the flock well fed.
Effective tactics
A study conducted by Embrapa Pecuária Southeast between 2013 and the end of 2015 indicated that fly infestation of the horns in silvopastoral systems, where tree planting is badociated at livestock raising and fodder growing, are 38% smaller than conventional pastures.
According to Márcia Oliveira, alterations of microclimate and microfauna. badociated with faecal cake cattle created in these systems affect the fly population dynamics.
In the badysis of horn count data, significant differences were found, comparing the two production models: silvipastoril system and conventional system. (livestock and pasture only) For the researcher, this may be due to the greater amount and diversity of microfauna badociated with fecal cakes from animals raised in the tree system and acting as predators of the parasite's free life stages, contributing to the Demographic balance of ectoparasites, such as sandflies.
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