Wilson A J, Trueman K F
Aust Vet J. 1978 Mar;54(3):121-4. doi: 10.1111/j.1751-0813.1978.tb05522.x.
Some effects of the plane of nutrition on the development of anaplasmosis in Brahman cross steers were investigated. Batches of 39 and 30 Brahman cross steers, aged approximately 27 months were each divided by stratified randomisation into 4 groups of similar mean PCV and body weight. Two similar experiments, designated A and B were conducted. Groups 1 and 2 were fed a ration of lucerne chaff at the rate of 1 M Cal ME/80 kg live weight/day for 8 weeks aimed to reduce body weight by approximately 5 kg/week. Animals in groups 3 and 4 were fed a ration for the same period aimed to increase body weight by approximately 2 kg/week. Groups 1 and 3 were then inoculated with approximately 10(10) Anaplasma marginale infected erythrocytes and the effects of the subsequent infections during the clinical and recovery phases were examined by measuring humoral antibody response, packed cell volume, parasitaemia and body weight. Groups 2 and 4 were uninfected controls. Anaplasmosis, as measured by three responses, was less severe in the starved animals of group 1. Significant differences in packed cell volume and parasitaemia were detected for short periods between the infected groups 1 and 3. Anaplasmosis caused losses of 6.2% and 5.9% in the mean body weight of group 3 animals in experiments A and B respectively. Most of this loss occurred during the clinical phase of the disease. The disease caused no apparent loss of weight in the infected animals of group 1.
研究了营养水平对婆罗门杂交阉牛无形体病发展的一些影响。将两批约27月龄、数量分别为39头和30头的婆罗门杂交阉牛通过分层随机化分为4组，每组的平均红细胞压积（PCV）和体重相似。进行了两个相似的实验，分别命名为A和B。第1组和第2组以每80千克活重每天1兆卡代谢能（ME）的量饲喂苜蓿干草，持续8周，目的是使体重每周减轻约5千克。第3组和第4组在同一时期饲喂旨在使体重每周增加约2千克的日粮。然后给第1组和第3组接种约10¹⁰个感染了边缘无形体的红细胞，并通过测量体液抗体反应、红细胞压积、寄生虫血症和体重来检查临床和恢复阶段后续感染的影响。第2组和第4组为未感染的对照组。通过三种反应测量，第1组饥饿动物的无形体病病情较轻。在感染的第1组和第3组之间，短时间内检测到红细胞压积和寄生虫血症存在显著差异。在实验A和B中，无形体病分别使第3组动物的平均体重损失了6.2%和5.9%。这种体重损失大部分发生在疾病的临床阶段。该疾病在第1组感染动物中未导致明显的体重减轻。
