TASK DEFINITION: Translate the given Spanish text to English
PROBLEM: Waste may be shredded first.

SOLUTION: La basura puede ser triturada primero.

PROBLEM: A fish feed comprising conventional feed ingredients and glucosinolates is described.

SOLUTION: SE DESCRIBE UN PIENSO PARA PECES QUE COMPRENDE INGREDIENTES CONVENCIONALES PARA PIENSO Y GLUCOSINOLATOS.

PROBLEM: Disclosed is an optical disk.

SOLUTION:
Se describe un disco optico.