The dietary protein requirement of a bagrid catfish, Mystus nemurus (Cuvier & Valenciennes), determined using semipurified diets of varying protein level
By Wing Ng, S. Soon, R. Hashim. 2001
101 citations recorded by the source corpus.
Triplicate groups of Mystus nemurus (Cuvier & Valenciennes) were fed isoenergetic semipurified diets containing seven dietary protein levels from 200 to 500 g kg–1 diet for 10 weeks. Dietary protein was supplied by graded amounts of a protein mixture (tuna muscle meal:casein:gelatine) at a fixed ratio of 50:37.5:12.5. Mystus nemurus fingerlings of initial weight 7.6 ± 0.2 g were fed close to apparent satiation at 2.5% of their body weight per day in two equal feedings. Growth performance and feed utilization efficiency increased linearly with dietary protein level from 202 to 410 g kg–1 diet and declined with protein levels of 471 g kg–1 diet or above. Protein efficiency ratio and apparent net protein utilization started to decline when the fish were fed with dietary protein levels exceeding 471 g kg–1 diet. Fish fed with lower protein diets (202–295 g kg–1 diet) had significantly (P < 0.05) higher carcass lipid content compared with fish fed with higher protein diets. Carcass lipid contents were inversely related to moisture content. Dietary protein did not significantly affect fish carcass protein and ash content. Using two-slope broken-line analysis, the dietary protein requirement for M. nemurus based on percentage weight gain was estimated to be 440 g kg–1 diet with a protein to energy ratio of 20 mg protein kJ–1 gross energy. This level of protein in the diet is recommended for maximum growth of M. nemurus fingerlings weighing between 7 and 18 g under the experimental conditions used in this study.
Subfields: Aquatic Science, Physiology
View Paper: https://www.semanticscholar.org/paper/6104500a9e28f4a25d2330c95eb6da31a8307574
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In Aquatic Science
Citations in the corpus
- Growth Performance, Nutrient Utilization of Nile Tilapia Oreochromis niloticus Fed Housefly Maggot Meal (Magmeal) Diets (2008, background): “Hence body composition is mainly influenced by the dietary lipid supply and availability as it has been demonstrated in other fish species such as sunshine bass (Nematipour, 1992), bagrid catfish (NG et al., 2001) or Eurasian perch (Xu et al., 2001; Mathis et al., 2003).”
- Effects of the dietary protein and lipid levels on growth and body composition of bagrid catfish, Pseudobagrus fulvidraco (2005, background): “%) estimated for Malaysian freshwater catfish Mystus nemurus (Khan et al., 1993; Ng et al., 2001).”