In both operations, a typical hen produces about 55 kg/hen/year of manure . A very rough 15 estimate of the amount of poultry manure produced in Canada for 1989 was approximately million tonnes per year (See Appendix II). Comparatively, in the United States in 1980, 158 million tonnes of manure were produced, of which over 7 million tonnes were attributed to broiler and layer production . These numbers do not take into account hatchery wastes, 10 turkey or waterfowl manure. From the Canadian estimate, it can be seen that a large amount of poultry manure is produced in this country. Not.
