รายละเอียดผลงาน

The effects of feed quality on growth performance and feed utilization of Nile tilapia (Oreochromis niloticus) were studied experimentally in a 2-month feeding trial. Fish with an initial weight of 20.61 ? 0.15 g and initial length of 10.45 ? 0.03 cm were reared for 8 weeks in dietary treatment groups according to a completely randomized design (4 treatments ? 3 replications). The isonitrogenous, isolipidic and isoenergetic feeds contained 200 g/kg palm kernel meal (PKM), and differed in the form of PKM that was either unprocessed (UPKM), water-soaked (SPKM), microwave-irradiated (MPKM), or water-soaked and microwave-irradiated (SMPKM). Physicochemical property changes in ways that are expected to enhance enzymatic digestion of the feed were determined, including pH, turbidity, microstruct