COPY NO. ###5. ###941. NOTE ON LIVESTOCK AS AN ESSENTIAL FACTOR IN INCREASED FOOD PRODUCTION Conflicting views are still heard on the relation of livestock to soil fertility, on the need for reducing the cattle population, and even on the advisability of ploughing up good grass land. For example, it is sometimes stated that the value of farmyard manure depends on the feedingstuffs consumed and not on the number of mouths through which this feedingstuff passes, and that therefore the size of the livestock population has no effect on soil fertility.