In Argentina, rendering forms a relatively small part of the animal waste disposal system. The consequence is that very little sheep waste is rendered outside the two large slaughterhouses in Buenos Aires that slaughter sheep and cattle. To complete the picture, it is necessary to put rendering in the context of other methods of waste disposal in Argentina. The tallow is used as described above. Virtually all farms have a disposal pit in a fenced area.
Small abattoirs dispose of blood by burial but there is an export market for dried blood powder.
A substantial number of cows are slaughtered each year at an age when clinical cases of BSE would occur if the infection were present in Argentina. The great majority of abattoirs in Argentina specialize in the slaughter of either sheep or cattle , and only two of them slaughter substantial numbers of both species. This effectively reduces the mixing of ovine and bovine wastes and minimizes the risks of cross-species infection from any feeds derived from them. For simple economic reasons, rendering forms only a part of the animal waste disposal system. Large amounts of ovine and bovine wastes are disposed of by incineration, or after sterilization at high temperatures and pressures.