夏季飞来昆虫对放牧牛体表护理行为的影响

Influences of Pest-flies on the Grooming Behavior of Grazing Cattle in Summer

飞来昆虫多发生在夏季,为了减少放牧应激,有必要定量化地研究飞来昆虫对放牧牛体表护理行为的影响。本文研究证明飞来昆虫对放牧牛体表护理行为的影响随飞来昆虫数量的变化而变化。摆尾次数占总体表护理行为的50.6%～65.5%。由此可见,夏季飞来昆虫对放牧牛诱发的体表护理行为以摆尾行为为主,因此摆尾行为可作为把握牛体表上飞来昆虫数的指标。

In summer when many pestflies appear, it is necessary to quantify the grooming behavior against pestflies alighted on cattle and be clear the influence of pestflies on a life of grazing cattle in order to reduce grazing stress for cattle and use grazing effectively. In this study, we made clear the influences of pestflies on the grooming behavior of grazing cattle in summer as follows. Grooming behavior against pestflies in grazing cattle changed with the number of pestflies. Frequency of tail swishing occupied 50.6~65.5% of all the grooming behavior. Therefore it was clear that the behavior of tail swishing could be considered as a good indicator to estimate the number of pestflies.