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Archivos de Zootecnia
versión On-line ISSN 1885-4494versión impresa ISSN 0004-0592
Resumen
BENITES, C.I. y SOUZA-SOARES, L.A.. Co-dried fish waste silage meal and rice bran: a viable alternative. Arch. zootec. [online]. 2010, vol.59, n.227, pp.447-450. ISSN 1885-4494.
Silages of fish wastes from castanha (Umbrina canosai) and pescada (Cynoscion guatacupa) were made with acid addition (acetic or vinegar) and rice bran as drying agent. The silage preparation consisted of the grinding waste, acidification, daily homogenization for five days and monitoring the pH. After 15 days, the silages were centrifuged, dried in stove and ground. A 23 factorial design was employed, in which the studied factors and levels were: fish species, acid agent and the presence of rice bran during the drying process. The lipids content weren't significantly different, however, the addition of rice bran reduced considerably the ash content and shorted the drying time, indicating improvement of the process. It was verified that the concentration of acid and the fish species didn't interfere in the product.
Palabras clave : Umbrina canosai; Cynoscion guatacupa; Byproducts.