The swine production along with human wastes, poultry, fertilizer and urban runoff are suspected to have trigger the development of Pfiesteria to its toxic forms in estuaries where the rivers join the oceans. The toxic form of Pfiesteria feeds on the fishes resulting in dying fishes from bloody sores. A massive hog manure spill has been linked to subsequent major fish kill by Pfiesteria in 1995 in North Carolina. Research will be done to evaluate the situation and also the contribution of the pork industry to the problem. The pork producers are encouraged in the mean time to protect themselves by the promotion and adoption of stringent waste management standards.

The contribution of swine production to the problem of nutrients’ increased load in the water and undesirable micro-organisms activity has to be investigated by systematic research considering whole system approach and watershed evaluation. Otherwise this production already pointed out as causing environmental problems could be easily blamed as being the problem.