News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

decomposition

Aquafeeds

Understanding the oxygen demand of aquafeeds

Manufactured aquafeeds, if improperly managed, can result in undesirable oxygen demand that can reduce dissolved oxygen levels and pollution through effluents, and stress cultured animals. 

Health & Welfare

Descomposición y acumulación de materia orgánica en estanques

Los estanques acuícolas acumulan materia orgánica de fertilizantes orgánicos, restos de micro-organismos producidos dentro del estanque, las heces de los animales criados y el alimento no-consumido. Claude E. Boyd, Ph.D., detalla las principales prácticas de gestión de la materia orgánica, 

Health & Welfare

Decomposition and accumulation of organic matter in ponds

Aquaculture ponds accumulate organic matter from organic fertilizer, remains of microorganisms produced within the pond, feces of the culture animals and uneaten feed. Claude E. Boyd, Ph.D., details the leading organic matter management practices, and says that the accumulation of 

Responsibility

Carbon-nitrogen ratio management

Carbon-nitrogen (C:N) ratio is an important variable related to soil fertility. Intensive ponds have lower C:N ratios, while higher ratios are found in extensive ponds and those constructed in organic soil.