Pegram R G, Oosterwijk G P
Economics of Ticks Project (GCP/ZAM/029/DEN), Food and Agriculture Organization, Lusaka, Zambia.
Med Vet Entomol. 1990 Jul;4(3):327-30. doi: 10.1111/j.1365-2915.1990.tb00448.x.
The effect of the tick Amblyomma variegatum Fabricius on liveweight gain (LWG) on yearling cattle over 16 weeks was evaluated under quasi-natural conditions. Early in the exposure period when animals may have been in a state of suppressed metabolism, the effect of tick feeding on LWG was negligible. Overall, however, the difference in LWG between tick-free and tick-infested groups of cattle was 4.95 kg after 16 weeks. This difference between the groups was used to estimate a lower LWG of 48-63 g due to each engorging female tick.
在准自然条件下，评估了变异革蜱（Amblyomma variegatum Fabricius）对一岁龄牛16周体重增加（LWG）的影响。在暴露期早期，动物可能处于代谢受抑制状态，蜱虫取食对LWG的影响可忽略不计。然而，总体而言，16周后无蜱虫组和有蜱虫组牛的LWG差异为4.95千克。两组之间的这种差异用于估计每只饱血雌蜱导致LWG降低48 - 63克。
