Sophasith Thammaboud. The effects of macleaya cordata extract as feed additive on the growth performance and fillet quality of nile tilapia (Oreochromis niloticus). Master's Degree(Aquaculture). Kasetsart University. Office of the University Library. : Kasetsart University, 2017.
The effects of macleaya cordata extract as feed additive on the growth performance and fillet quality of nile tilapia (Oreochromis niloticus)
Abstract:
The effects of Macleaya cordata extract as feed additive on the growth performance and fillet quality of Nile tilapia (Oreochromis niloticus) was divided into two experiments: Experimental 1: The research was studied on palatability efficacy of feed additive, M. cordata extract in Nile tilapia by assigned into two treatments: 1)traditional diet of 35% protein with M. cordata 50 mg/kg (A) and 2)diet without M. cordata (C). The results showed that fish fed A diet had shorter time (P < 0.05) to attracted feed and finished feed consumption including growth performance but showed no effects (P > 0.05) on feed conversion ratio and survival rate. Therefore, the feed additive M. cordata extract had attracted ability and palatability effects (P < 0.05). Experimental 2: The study was conducted to evaluate the efficacy of feed additive M. cordata extract on growth performance, fillet quality and immune system of Nile tilapia. Four diets were prepared by traditional diet of 30% protein and supplementation with varies level of M. cordata extract (25, 50 and 75 mg/kg). The results showed significantly differences (P < 0.05) on final weight, weight gain and average daily gain in M. cordata extract groups but showed no effects on feed utilizations. For immune system, there was only serum protein had increase (P < 0.05) in M. cordata extract groups. Fillet quality parameters displayed the better (P < 0.05) performances in M. cordata extract groups. However, there were not significantly differences on carcass composition, fillet chemical composition and sensory parameters. Therefore, M. cordata extract can be feed attractant; improve palatability and results in promoting growth performance and fillet quality at the supplemental level at least 25 mg/kg.
Kasetsart University. Office of the University Library