Mills K, McClenaughan P, Morton A, Alley D, Lievaart J, Windsor P A, Egerton J R
Faculty of Veterinary Science, University of Sydney, Camden, New South Wales, Australia.
Aust Vet J. 2012 Jan-Feb;90(1-2):14-9. doi: 10.1111/j.1751-0813.2011.00872.x.
To identify and compare programs for eradicating virulent footrot (VFR) chosen by owners of quarantined sheep flocks in southern New South Wales.
Data from 196 sheep flocks in the Wagga Wagga and Young Rural Lands Protection Boards were used to determine the program chosen, the influence of flock size on the program chosen and the effects of the program chosen and the use of contractors on the time in quarantine.
The most popular programs in flocks using a single program were: total destocking (61/173; 35.3%) and inspection and culling of affected animals (71/173; 41.0%). Treatment of known infected animals was chosen in 41 flocks and of those, 10 (5.8%) used antibiotics for treatment and 31 (17.9%) used foot-bathing. Combined programs were used in 23 flocks and in 10 flocks a change of program occurred before eradication was achieved. The choice of program was, to some extent, affected by flock size, with owners of small flocks (<500 sheep) more likely to destock. The chosen program strongly influenced the time in quarantine, the shortest time being for destocking (mean 284 days), followed by culling of infected sheep (395 days), treatment with antibiotics (433 days) and finally foot-bathing (502 days). Time in quarantine was significantly shorter when contractors were used.
All the options chosen led to the eradication of VFR. However, in this sample both the choice of program and the use of contractors influenced the time taken to achieve eradication and therefore the time in quarantine. Based on time in quarantine, foot-bathing was the least desirable option for the eradication of VFR because of the significantly greater time involved, perpetuation of risk to neighbours and increased cost of inspections. These findings were derived from flocks that were quarantined, but they are relevant to all flock owners considering eradication of VFR.
识别并比较新南威尔士州南部隔离羊群的所有者所选择的根除恶性腐蹄病（VFR）的方案。
利用来自瓦加瓦加和扬农村土地保护委员会的196个羊群的数据，来确定所选择的方案、羊群规模对所选择方案的影响，以及所选择的方案和使用承包商对隔离时间的影响。
在使用单一方案的羊群中，最受欢迎的方案是：全部清栏（61/173；35.3%）以及对患病动物进行检查和扑杀（71/173；41.0%）。41个羊群选择了对已知感染动物进行治疗，其中，10个（5.8%）使用抗生素治疗，31个（17.9%）使用药浴。23个羊群使用了联合方案，10个羊群在根除之前更换了方案。方案的选择在一定程度上受到羊群规模的影响，小羊群（<500只羊）的所有者更有可能清栏。所选择的方案对隔离时间有很大影响，最短的是清栏（平均284天），其次是扑杀感染羊（395天）、抗生素治疗（433天），最后是药浴（502天）。使用承包商时，隔离时间明显更短。
所选择的所有方案都导致了VFR的根除。然而，在这个样本中，方案的选择和承包商的使用都影响了实现根除所需的时间，从而影响了隔离时间。基于隔离时间，药浴是根除VFR最不理想的选择，因为涉及的时间明显更长、对邻居的风险持续存在且检查成本增加。这些发现来自被隔离的羊群，但它们与所有考虑根除VFR的羊群所有者相关。
