Effects of some alternative dietary lipid sources on fatty acid profiles and proximate composition of common carp, Cyprinus carpio (Linn.).
KrishiKosh
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Title |
Effects of some alternative dietary lipid sources on fatty acid profiles and proximate composition of common carp, Cyprinus carpio (Linn.).
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Creator |
Sonu
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Contributor |
Babbar, B.K.
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Subject |
oils, acidity, fatty acids, plant oils, processed animal products, lipids, biological development, biological phenomena, unsaturated fatty acids, fats
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Description |
The study has been conducted to identify alternative dietary lipid source(s) for complete/partial replacement of fish meal/fish oil from the feed of common carp, Cyprinus carpio (Linn.) without compromising with the growth performance, and nutritional quality (fatty acid profiles and proximate composition) of the fish. The alternative dietary lipid sources taken were vegetable oils viz. soybean oil (SBO), canola oil (CO) and sunflower oil (SFO) and animal fats viz. poultry fat (PF) and goat fat (GF). Treatment diets were prepared by replacing 0%, 25%, 50%, 75% and 100% fish oil with each alternative lipid source and were fed to the experimental fish for 60 days under laboratory conditions. Results revealed that substitution of fish oil with alternative dietary lipid sources in the common carp diet has no negative effects on the growth performance and muscle proximate composition. The fatty acid composition of the diet was reflected in muscle total lipid of fish. There was a significant difference in the concentration of SFAs, MUFAs and PUFAs in the muscle of C. carpio fed different experimental diets. The levels of n-3 HUFAs decreased with increasing vegetable oil/animal fat percentages in all the diets (p≤0.05). Similarly, the ratios of n-3 to n-6 fatty acid decreased with increasing vegetable oil/animal fat percentages in all the diets. As compare to vegetable oils, animal fats were found unbalanced especially in terms of fatty acid profiles due to low level of n-3 PUFAs. However 25-50% replacement of fish oil with vegetable oil/animal fat retained ratio of n-3/n-6, PUFA/SFA and PUFA/MUFA within recommended range. Considering the above point, 50% canola oil diet and 50% poultry fat diet were chosen for next experiment to study the finishing effect of 100% fish oil on the fatty acid composition of fish muscle. The results of this experiment suggest that inducing a dietary shift from canola oil based and poultry fat based feeds to fish oil based feeds supplied as finishing diet about 20 days before harvesting strongly increases long-chain PUFA concentrations in common carp as compared to those fed only canola oil and poultry fat based feeds throughout the rearing period.
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Date |
2016-04-20T15:08:59Z
2016-04-20T15:08:59Z 2015 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/65508
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Language |
en
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Format |
application/pdf
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Publisher |
PAU
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