Effects of Varying Dietary Docosahexaenoic, Eicosapentaenoic, Linoleic, and α-Linolenic Acid Levels on Fatty Acid Composition of Phospholipids and Neutral Lipids in the Liver of Atlantic Salmon, <i>Salmo salar</i>

Jalali, S. M. A.; Parrish, Christopher C.; Caballero‐Solares, Albert; Rise, Matthew L.; Taylor, Richard G.

doi:10.1021/acs.jafc.0c05182

Cited by 2 publications

(2 citation statements)

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Specific growth rate (SGR) = (\ln final body weight - \ln initial body weight) \times 100 / days

Daily weight gain (DWG) = (final body weight - initial body weight) / days

Feed conversion ratio (FCR) = (daily feed intake / daily weight gain)

Hepatosmatic index (HSI) = (liver weight / body weight) \times 100

Viscerosomatic index (VSI) = (viscera weight / body weight) \times 100

Protein efficiency ratio (PER) = (final body weight - initial body weight) / protein intake

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Section: Methodsmentioning

confidence: 99%

“…During the feeding period, fish growth performance parameters, such as fish weight and the amount of feed eaten, were recorded every 2 weeks. Weight gain (WG), FCR, specific growth rate (SGR), PER, visrosomatic index (VSI), and HSI were calculated as follows (Jalali et al, 2021). The ADE of the experimental diets was examined according to the method described by Aas et al (2011) in the second part of the feeding period.…”

Section: Growth Performance Of Fish and Apparent Degradability (Ade) ...mentioning

confidence: 99%

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Effects of dietary corn and protein levels on physical properties of extruded feed pellets and growth performance of rainbow trout, Oncorhynchus mykiss

Alkoei,

Jalali,

Jalali

et al. 2023

J World Aquaculture Soc

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The dietary protein levels and source of starch are factors in the economical production of feeds, which may change the physical quality of extruded pellets and the growth performance of fish. Eight feeds contained two protein levels and four levels of wheat flour substitutions by corn, as a 2 × 4 factorial experimental design, were produced by a twin‐screw extruder machine and fed to 800 rainbow trout. The results showed corn grain reduced expansion ratio, water stability at 120 and 260 min, starch gelatinization (SG), and apparent degradability, while bulk density (BD) and oil leakage of feed pellets increased. The high protein diets displayed the most BD, lower oil leakage, SG, and elastic modulus. The high protein feeds improved the final body weight, weight gain, specific growth rate, and feed conversion ratio (FCR) of fish. The corn grain reduced the FCR and promoted the trout's protein efficiency ratio. Lipid proportions of fish livers corresponded to hepatosomatic index and serum concentrations of aspartate aminotransferase and alanine aminotransferase. In general, corn, as the starch source in the high and low‐protein extruded feeds, can be replaced at levels of 33%–66% of wheat flour without adverse effects on the physical characteristics of feed pellets and the growth performance of rainbow trout.

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