再生畜牧业中的寄生虫控制

A. Forbes, K. Ellis
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引用次数: 0

摘要

再生畜牧业的倡导者声称,采用基于高强度、短时间、长休息的轮牧实践后,有许多好处,其中包括减少寄生虫和使用驱虫药。支持这种说法的科学数据有限,而且很少的证据大多来自北美和南非,因此,如果英国被收养者的观察和经历能得到一些控制良好的实地研究的支持,那将是有益的。在缺乏它们的情况下,考虑已知寄生虫生物学的某些方面,例如寄生线虫的幼虫生态学,可以阐明各种类型的牧场、放牧和动物管理的可能结果。在再生系统中尽量减少使用驱虫药需要进行有效监测,以确保动物的生产性能和健康不会因寄生虫而受到影响;对于幼鱼,生长速度是亚临床寄生性肠胃炎最可靠的标志。还应考虑到可能影响放牧牲畜的其他寄生虫,如肺虫、吸虫、蜱虫和苍蝇,以便确定再生管理对寄生虫动物群的影响及其对羊和牛的集体影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Parasite control in regenerative livestock farming
Advocates of regenerative livestock farming claim a multitude of benefits following adoption of practices based on high intensity, short duration, long rest rotational grazing, amongst which is a reduction in parasitism and the use of anthelmintics. There are limited scientific data to support such claims and much of what little evidence there is emanates from North America and South Africa, so it would be useful if the observations and experiences of UK adoptees could be backed up with some well-controlled field studies. In their absence, considerations of some aspects of known parasite biology, such as the larval ecology of parasitic nematodes, can shed light on likely outcomes of various types of pasture, grazing and animal management. Minimising the use of anthelmintics in regenerative systems requires effective monitoring to ensure that animal performance and health do not suffer as a result of parasitism; for youngstock, growth rate is the most reliable marker for subclinical parasitic gastroenteritis. Consideration should also be given to other parasites that can affect grazing livestock, such as lungworm, fluke, ticks and flies, in order to determine the influence of regenerative management on the parasite fauna and their collective impact on sheep and cattle.
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