Cummins L J, Tweedle N E
Aust Vet J. 1977 Dec;53(12):591-2. doi: 10.1111/j.1751-0813.1977.tb15833.x.
Groups of Hereford weaners carrying naturally acquired infestations of L. vituli were allocated to a factorial experiment to examine the effect of lice treatment, sex and nutrition on growth rate during winter and early spring. Plane of nutrition was the only factor influencing growth rate over this period. In untreated groups of cattle, the plane of nutrition influenced the lice score but lice score did not influence growth rate.
携带自然感染微小牛蜱的赫里福德断奶犊牛被分成几组，进行析因试验，以研究灭虱处理、性别和营养对冬季和早春生长速度的影响。在此期间，营养水平是影响生长速度的唯一因素。在未处理的牛群中，营养水平影响蜱虫评分，但蜱虫评分不影响生长速度。
