Sutham Srisuppatpong owns a 8,000 ?sow farrow to finish farm, the Nong Bua farming company, which is located to the south of Bangkok, Thailand. Not only has this company its nucleus and multiplier for breeding stock, it also produces fish and recently joined forces with an American company to build a biogas plant.

When speaking of manure management, most attention is given to nitrogen and phosphorus. However, copper (Cu) and zinc (Zn) can also cause problems for the environment.

There is an increasing awareness in Vietnam of the pollution risks posed by pig production. The advisory activities were recently supported by a specialist training course on waste management at the Binh Thang centre near Ho Chi Minh City.

Feeding pigs energy rich feed may help to reduce the manure output of these animals. According to Dutch feed company Coppens Diervoeding a reduction of 5% in manure volume is realistic.