FT Vol.56(2)
Permanent URI for this collection
Browse
Recent Submissions
1 - 2 of 2
- ItemNutritional quality evaluation of feeds developed from secondary raw material from fish processing industry(Society of Fisheries Technologists (India), Cochin, 2019)Fresh head waste of sardine, threadfin bream, anchovy and tilapia was converted into fish meal after cooking and pressing. Whole sardine was used as control sample. Quality analysis of the prepared meal revealed that the protein content was lower for sardine waste (43.1%) and higher for tilapia (62.3%). The fish meal prepared was used as the protein source for preparing feed along with other ingredients. Isoprotenous feed prepared was administered in Wistar strain male albino rats for a period of 31 days and Feed Intake (FI) Protein Efficiency Ratio (PER) and Feed Conversion Ratio (FCR) was estimated. Feed intake was more in threadfin bream waste feed and anchovy waste feed (135.1 g/31 days) which was significantly different from other feeds. The acceptance of feed developed from the waste of fish shows more or less similar to control feed indicating that the waste can be utilized for the development of feed for different animals thereby resolving the problem of environmental pollution.
- ItemNano CuO incorporated polythylene glycol hydrogel coating over surface modified polyethylene aquaculture cage nets to combat biofouling(Society of Fisheries Technologists (India), Cochin, 2019)Biofouling on aquaculture cage netting is a major problem and its management costs the quarter of the total budget. The present study aimed to develop an antifouling coating over surface modified polyethylene cage netting. Polyethylene nettings were surface modified with polyaniline and the same surface was coated with nano CuO incorporated polyethylene glycol hydrogel. Strong and uniform coating of polyaniline and hydrogel were formed over the nettings. This was evidenced by FTIR, AFM and SEM studies. The treated cage nets were exposed to the test sites of Cochin estuary for three months and they exhibited a significant reduction in fouling compared to untreated nettings. The nano CuO incorporated hydrogel coating was about 53% more efficient than control. The CuO hydrogel was semi hydrophilic in nature, defect-free and more compact surface. These led to the protein inhibition, thereby biofouling resistance. The coating is a potential candidate for preventing biofouling in the cage nets.