Three trials demonstrated that grazing lambs were just as effective as herbicides in controlling winter weeds. Learn about the different names used for groups or companies of mammals. In these countries in particular, dishes comprising alternative cuts and offal may be popular or traditional. Two fundamental preventive programs are maintaining good nutrition and reducing stress in the sheep. In this trial, lambs provided insect control as effectively as insecticides. Many of the following terms belong to 15th-century lists of 'proper terms', such as those in the Book of St Albans attributed to Dame Juliana Barnes Also, sheep breeds are often naturally polled either in both sexes or just in the female , while naturally polled goats are rare though many are polled artificially.