Show Scientists Conclude Calf Parasite Study A study of the parasite infestation of calves on pasture has led C. D. Grinnels and J. L. Moore of North Carolina to three main calves under ten months of age should not be turned on calf pastures should be rotated to reduce the parasite and calf pastures should be grazed part of the time by mules or by mature Parasite populations build up very rapidly on calf the Investigators The increase was most rapid on heavily grazed these showing almost double the parasite population as the lightly grazed Calves under ten months are extremely susceptible to parasite Rotating pastures and grazing them with mature animals cuts down the Mature cattle have an age |