1. Uncertainties ahead with raw materials;AAP;Aqua Cult. Asia Pac.,2008
2. Industry squeezed and high feed costs to remain;AAP;Aqua Cult. Asia Pac.,2009
3. Managing costs and improving feed performance;AAP;Aqua Cult. Asia Pac.,2010
4. Agrina, 2008. .
5. Alltech Global Feed Survey (2014). . Alltech, Kentucky, USA.