Optimal Replacement of Fish Meal Protein by Stick Water in Diet of Sex-Reversed Nile Tilapia (Oreochromis niloticus)
Open Access
- 2 August 2019
- Vol. 9 (8), 521
- https://doi.org/10.3390/ani9080521
Abstract
The effects of replacing fish meal (FM) protein with stick water (SW) were investigated during the market stage of sex-reversed Nile tilapia, Oreochromis niloticus (18.49 ± 0.31 g initial body weight). The FM protein was replaced with SW for 10% (10SW), 20% (20SW), 30% (30SW) and 50% (50SW) of the FM. The completely randomized design was conducted in outdoor 15 floating baskets (1.5 × 1.5 × 2 m), comprising three replications with 50 fish each, over an 8 month trial. At the end of the experiment, no differences in survival, growth performance or feed utilization were observed across the dietary treatments (p > 0.05). A significant change in lipase-specific activity was caused by the replacement, without changes to trypsin, chymotrypsin or amylase activities. The fish in all dietary groups exhibited normal liver histopathology, but the fish fed a diet containing SW showed higher numbers of cells accumulating lipids as compared to fish fed the baseline 0SW dietary treatment. Hematological parameters were similar across the five dietary groups. Only fish fed the 20SW diet had superior carcass quality compared to the baseline 0SW group, in terms of crude protein and lipids, but lower or higher replacement levels had negative effects on carcass quality. Findings from the current study support the replacement of FM protein with SW at a level of 20% in the diet of sex-reversed Nile tilapia reared to the market stage. Higher replacement levels might be possible with the supplementation of fatty acids.Keywords
Funding Information
- National Research Council of Thailand (2556NRCT53485)
This publication has 24 references indexed in Scilit:
- Effects of fish meal quality and fish meal substitution by animal protein blend on growth performance, flesh quality and liver histology of Japanese seabass (Lateolabrax japonicus)Aquaculture, 2013
- Effects of Replacement of Fish Meal by Soy Protein Isolate on the Growth, Digestive Enzyme Activity and Serum Biochemical Parameters for Juvenile Amur Sturgeon (Acipenser schrenckii)Asian-Australasian Journal of Animal Sciences, 2012
- Effects of different levels of soybean meal inclusion in replacement for fish meal on growth, digestive enzymes and transaminase activities in practical diets for juvenile tilapia, Oreochromis niloticus×O. aureusAnimal Feed Science and Technology, 2011
- Replacement of fish meal by meat and bone meal in diets for large yellow croaker, Pseudosciaena croceaAquaculture, 2006
- Different expressions of trypsin and chymotrypsin in relation to growth in Atlantic salmon (Salmo salar L.)Fish Physiology and Biochemistry, 2006
- Daily and seasonal variations in haematological and blood biochemical parameters in the tench, Tinca tinca Linnaeus, 1758Aquaculture Research, 2005
- Water conservation in canned tuna (pet food) plant in ThailandJournal of Cleaner Production, 2005
- Temperature and pH characteristics of amylase and proteinase of adult freshwater pearl mussel, Hyriopsis (Hyriopsis) bialatus Simpson 1900Aquaculture, 2004
- Impact of nutrition and season on pond culture performance of mono-sex and mixed-sex Nile tilapia (Oreochromis niloticus)Aquaculture, 2004
- Production of a high percentage of male offspring with a natural androgen, 11β-hydroxyandrostenedione (11βOHA4), in Florida red tilapiaAquaculture, 2003