Effect of tick control on liveweight gain of cattle in central Zambia
Effect of tick control on liveweight gain of cattle in central Zambia
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蜱虫控制对赞比亚中部牛增重的影响
DOI：
10.1111/j.1365-2915.1989.tb00234.x
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发表时间：
1989
影响因子：
1.9
通讯作者：
P. Mccosker
中科院分区：
文献类型：
--
作者：
R. Pegram;J. Lemche;H. Chizyuka;R. Sutherst;R. Floyd;J. Kerr;P. Mccosker
摘要。1982 - 1986年期间，在赞比亚中部进行了两种不同生态型的实地试验，以确定蜱虫控制对牛的活重增加（LWG）的影响。在试验的前2年，每隔一周喷洒一种二胺虫杀螨剂（Amitraz），使幼龄动物的LWG周期性下降。此后使用了拟除虫菊酯杀螨剂（氯氰菊酯）。在1984 - 1985年蜱虫季节，50-120只成年异种法氏双盲眼虫在未处理的动物中侵染，导致LWG显著减少。根据处理过和未处理过的牛LWG的差异，估计每只膨胀的雌性变异牡牛LWG的诱导损失为46-61 g。
ABSTRACT. Field trials were carried out during 1982‐86 in two different ecotypes in central Zambia to determine the impact of tick control on the liveweight gain (LWG) of cattle. During the first 2 years of the trial a diamidide acaricide (Amitraz) sprayed at weekly intervals caused periodic depression in LWG in young animals. Thereafter a pyrethroid acaricide (cypermethrin) was used. During the 1984‐85 tick season infestations of 50–120 adult Amblyomma variegatum Fabricius in untreated animals caused significant reductions in LWG. From the differences in LWG between treated and untreated cattle, the induced loss in LWG was estimated at 46–61 g per engorged female A. variegatum.