Dietary protein and lipid concentrations affect the growth, nutritional indices, and whole-body composition of long-whisker catfish, Mystus gulio, fry

2021 ◽  
Author(s):  
Rooprekha Khatua ◽  
Kedar Nath Mohanta ◽  
Nitish Kumar Chandan ◽  
Rojalin Pattanayak ◽  
Choudhury Suryakant Mishra ◽  
...  
Keyword(s):  
Body Composition ◽  
Dietary Protein ◽  
Whole Body ◽  
Nutritional Indices

Effects of dietary protein and lipid levels on growth, feed utilization and body composition in juvenile goldfish, Carassius auratu

2017 ◽  
Author(s):  
S. S. Belsare ◽  
Hukam Singh Dhaker ◽  
A. S. Pawase ◽  
V. R> Joshi ◽  
S. A. Mohite ◽  
...  
Keyword(s):  
Body Composition ◽  
Weight Gain ◽  
Dietary Protein ◽  
Protein Level ◽  
Lipid Level ◽  
Feed Utilization ◽  
Dietary Lipid ◽  
Whole Body ◽  
Lipid Levels ◽  
Body Protein

An 8-week feeding trial was conducted to determine the optimum dietary protein and lipid levels for growth, feed utilization and body composition of goldfish, Carassius auratus juveniles (1.66 ± 0.018 g). Six diets containing two protein levels (300 and 400 g/kg) and three lipid levels (40, 80 and 120 g/kg) were formulated. Fifteen fish were randomly allotted to 18 aquaria (0.6 × 0.3 × 0.45 m) and fed to apparent satiation. The results showed that weight gain and specific growth rate (SGR) increased in response to higher dietary proteins with highest weight gain and SGR recorded in diet containing 400 g/kg protein with 80 g/kg lipid. Both feed intake (FI) and protein efficiency ratio (PER) were dependent on dietary protein and lipid level (P less than 0.05). Lipid retention (LR) was negatively correlated while hepatosomatic index (HSI) and viscerosomatic index (VSI) was positively correlated with dietary lipid levels. Whole body protein content decreased (P less than 0.05) while, lipid content increased with increasing dietary lipid at each protein level. Second-order polynomial regression also revealed diet containing 400 g/kg protein level and 80 g/kg lipid level optimal for the growth and feed utilization of juvenile goldfish, C. auratus.

Effect of Graded Protein Levels on the Growth, Survival and Body Composition of Juvenile Osteobrama belangeri using Semi Purified Diet

2020 ◽  
Author(s):  
Sagar C. Mandal ◽  
Nahakpam Surjobala ◽  
Arun B. Patel ◽  
Janmejay Parhi ◽  
Pramod K. Pandey
Keyword(s):  
Body Composition ◽  
Dietary Protein ◽  
Protein Level ◽  
Cost Effective ◽  
Feed Utilization ◽  
Carcass Composition ◽  
Whole Body ◽  
Nutritional Requirement ◽  
Limited Information ◽  
Dietary Protein Level

Background: Osteobrama belangeri is popularly known as pengba and was widely distributed in lakes and rivers. Protein is the most important nutrient for better growth of fish and other metabolic activities as well as covering higher cost than other nutrients. Limited information is available on the nutritional requirement of O. belangeri. The present study was conducted for determining growth, survival and body composition of O. belangeri using diets of graded protein level. Methods: The present experiment was conducted during 2016 for 40 days using 18 numbers of circular fiberglass reinforced plastic (FRP) tanks in six treatments in triplicate. The experiment was carried out in the wet laboratory of College of Fisheries, CAU (I), Lembucherra, Tripura. Growth performance, survival, feed utilization performance and fish carcass composition were analyzed after completion of the experiment. Result: The investigation suggests that the optimum dietary protein level of 25% gives the best performance in terms of growth, survival, feed utilization and whole-body carcass composition of O. belangeri. From the broken-line analysis on specific growth rate and mean weight gain, the best dietary protein level for O. belangeri is 24.39 to 24.88%. The present work will be useful for formulation of a cost effective diet for pengba for aquaculture.

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