Effect of dietary lipid level on growth, feed utilization and body composition by juvenile grass carp (Ctenopharyngodon idella)

By Z. Du, Y.-J. Liu, L. Tian, Ji-Teng Wang, Yong Wang, Gui-ying Liang. 2005

349 citations recorded by the source corpus.

A study was undertaken to determine the effect of dietary lipid level on growth, feed efficiency and body chemical composition of juvenile grass carp. Seven isonitrogenous diets (400 g kg(-1) crude protein) containing seven dietary lipid level (0, 20, 40, 60, 80, 100 and 120 g kg(-1) dry matter) were fed to triplicate groups of 40 fish with initial weight 6.52 g, for 70 days. No obvious and assured essential fatty acid deficiency symptom appeared in fish fed the lipid-free diet. Excess dietary lipid level (100 and 120 g kg(-1)) resulted in decreased feed intake. The best growth performance and feed utilization was observed in fish fed 20-40 g kg(-1) dietary lipid. The fish fed a lipid-free diet had the lowest protein efficiency and protein retention. Growth performance and feed utilization increased with the increasing dietary lipid levels up to 40 g kg(-1) dietary lipid. Higher dietary level (above 40 g kg(-1)) made growth performance and feed utilization decrease and no protein sparing effect was observed. Lipid retention decreased as dietary lipid level increased. Mesenteric fat index (MFI) increased, hepatosomatic index (HSI) decreased with dietary lipid level. The increased MFI and simultaneous decrease lipid retention can be explained by differences in growth. The effect of dietary lipid levels on the chemical composition of tissues was significant only for whole body and muscle. The excess lipid content of liver in all groups was regarded as a slight symptom of fatty liver, which was partly identified by microscopic structural study and lower plasma lipid indexes, comparing to the initial plasma data. In conclusion, grass carp is a fish with low energy requirement and excess dietary lipid level should be avoided.

Subfields: Aquatic Science, Immunology, Physiology

View Paper: https://www.semanticscholar.org/paper/565fa13263d33f6fe16e45d5d274205bf8817c9a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Aquatic Science

1. G. Turchini
2. Wing Ng
3. B. Torstensen
4. Wen‐bin Liu
5. C. Mylonas
6. D. Davis
7. D. Tocher
8. N. Romano

In Immunology

1. G. Turchini
2. Wing Ng
3. B. Torstensen
4. D. Davis
5. D. Tocher
6. N. Romano
7. B. Glencross

In Physiology

1. G. Turchini
2. Wing Ng
3. B. Torstensen
4. C. Mylonas
5. D. Davis
6. D. Tocher
7. J. Asturiano
8. Y. Zohar

Citations in the corpus

• Fish oil replacement in finfish nutrition (2009, background): “The relatively low requirement of these herbivorous fish for n-3 fatty acids coupled with the low dietary lipid requirement (Chou & Shiau 1996; Du et al. 2005) are positive indications for the successful replacement of FO with alternative lipid sources in the diets of carp and tilapia.”
• Hepatic triacylglycerol secretion , lipid transport and tissue lipid uptake in blunt snout bream ( Megalobrama amblycephala ) fed high - fat diet (2013, background): “In addition, the plasma TG and cholesterol concentrations could also reflect the conditions of endogenous lipid transport, and increased concentrations may indicate a more active endogenous lipid transport (Du et al., 2005).”
• Effects of dietary lipid levels on growth performance of marbled spinefoot rabbitfish Siganus rivulatus (2011, background): “Similar low dietary lipid requirement was observed for other herbivorous fishes such as grass carp (Ctenopharyngodon idella) (Du et al., 2005) suggesting a low dietary energy requirement for herbivorous fishes.”
• Effect of dietary lipid levels on growth, feed utilization, body composition and serum metabolites of meagre (Argyrosomus regius) juveniles (2010, background): “, 2005), grass carp (Ctenopharyngodon idella) (Du et al., 2005) Atlantic halibut (Hippoglosus hippoglossus) (Martins et al.”