The influence of energy level on the feed intake, growth, food conversion and body composition of Sparus aurata

Marais, J.F.K.; Kissil, George Wm.

doi:10.1016/0044-8486(79)90124-8

Cited by 65 publications

(35 citation statements)

References 28 publications

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“…Interestingly, this effect was not so clear for the 80% satiation group, where the lower energy intake might have exerted a reduction in lipid or glycogen deposition in the liver, causing a lower HSI. The increase in dietary lipid level from 16 to 32% did not promote any increase in lipid deposition, which is consistent with the study of other authors (Marais and Kissil 1979;Velázquez et al 2006). Even the different feeding regime did not lead to any differences in proximate composition, which is not in agreement with what was found by Company et al (1999) on the same species.…”

Section: Discussionsupporting

confidence: 86%

Growth and feed utilization of gilthead sea bream (Sparus aurata, L.) fed to satiation and restrictively at increasing dietary energy levels

et al. 2010

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Three isoproteic (47% protein) diets were formulated to contain graded levels of crude fat (diet D16:16%, diet D24: 24% and diet D32: 32%). Each diet was fed to satiation in three and to 80% satiation in two replicate groups of gilthead sea bream (Sparus aurata), having an initial body weight of 72-74 g. The trial lasted 81 days. Groups fed to satiation showed higher final body weight (FBW; 238.8-252.3 g vs. 218.0-229.3 g) and daily growth index (DGI; 2.49-2.65%/day vs. 2.27-2.34%/day) than those fed to 80% satiation. Feed intake was significantly different both for feeding level and for diet composition. Fish fed to satiation had higher feed conversion rate (FCR) compared to the 80% satiation groups (1.33-1.44 vs. 1.13-1.17; P B 0.001). Within satiation groups, FCR was significantly lower in fish fed D16 compared to fish fed D32 (1.33 vs. 1.44, P B 0.05), whereas no statistical differences were found within the 80% satiation groups. The increase in dietary lipid level did not improve growth performance, feed efficiency and protein utilization but decreased gross lipid efficiency. Conversely, a reduction in ration from satiation to 80% satiation decreased DGI, thus improving FCR. Feed costs were influenced by dietary energy level and feeding ratio, the lowest energy diet at 80% satiation being the most profitable combination among the variables.

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Section: Discussionsupporting

confidence: 86%

Growth and feed utilization of gilthead sea bream (Sparus aurata, L.) fed to satiation and restrictively at increasing dietary energy levels

et al. 2010

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“…The observed reduction in feed intake could be explained by differences in available dietary energy if they existed. Fish are thought to eat to satisfy an energy requirement ( Marais & Kissil 1979; Jobling & Wandsvik 1983; Kaushik & Luquet 1984); therefore, diets providing more energy would be consumed less. However, as the experimental diets were isoenergetic based on digestible energy content, they should have been eaten in almost equal amounts, unless there was another problem, such as diet palatability.…”

Section: Discussionmentioning

confidence: 99%

Dietary substitution of soy and rapeseed protein concentrates for fish meal, and their effects on growth and nutrient utilization in gilthead seabreamSparus aurataL.

Kissil

Lupatsch

Higgs

et al. 2000

Aquaculture Research

179

128

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Soy and rapeseed protein concentrates (SPC and RPC) were evaluated as fish meal substitutes in gilthead seabream Sparus aurata L. diets. The protein concentrates were used to replace 30%, 60% and 100% fish meal, and effects on feed intake, weight gain and feed gain ratio were determined in a 56‐day growth trial. Some groups were then grown beyond 56 days, until all reached an average weight of 50 g. A comparison of body composition at 50 g showed no significant differences in protein and ash content among all fish, while lipid and energy contents were different. The 100% RPC and 60% and 100% SPC replacement diets had lower body lipid and energy contents compared with those of the control diet. Feed intake and weight gains were inversely related to inclusion levels of plant proteins. Feed intake dropped to 52–72% of that of the control treatment and weight gain to 46–61%. Energy retention followed this same trend, decreasing from ERV values of 53 to 44 with an increase in dietary plant protein content. With the exception of 100% SPC substitution (PPV = 35), protein retention among treatments was similar (PPV = 37–39). These results suggest that both SPC and RPC may be promising protein sources for inclusion in seabream diets. The relative palatability of these plant proteins could be a limiting factor in their use.

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“…Feed contents in the stomach and intestine were collected at regular intervals (0, 1, 3, 8, 13, 24, and 48 h) after feeding. Gastric contents of the rockfish fed the HC, HL, and HP diets at the different feeding frequencies increased after feeding then gradually decreased and reached prefeeding levels within 24 h. This result indicates that the time of appetite return after satiation feeding in juvenile rockfish may be about 24 h. Fish size and feed should be considered because gastric evacuation rate seemed to be closely related to fish size and feed (Singh-Renton and Bromley 1996;Andersen 1998), feed quality (Rosch 1987), dietary energy level (Marais and Kissil 1979), temperature (Singh-Renton and Bromley 1996), stocking density (Gershanovich and Taufik 1992), and feeding frequency (Riche et al 2004). …”

Section: Discussionmentioning

confidence: 77%

Effects of dietary macronutrient level and feeding frequency on growth and body composition of juvenile rockfish (Sebastes schlegeli)

Seo

Lee

2008

Aquacult Int

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An 8-week feeding experiment was conducted to investigate the effects of different dietary macronutrient level and feeding frequency on the growth, feed utilization, and body composition of juvenile rockfish. Triplicate groups of fish (body weight of 4.1 g) were fed the experimental diets containing either high levels of carbohydrate (HC, 35%), lipid (HL, 13%), or protein (HP, 55%) at different feeding frequencies (twice daily, once daily, and once every 2 days). Weight gain was affected by feeding frequency but not by dietary composition. Weight gain of fish fed the diets once every 2 days was significantly (P \ 0.05) lower than that of other groups. Daily feed intake and energy intake were affected by both dietary composition and feeding frequency. Daily feed intake of fish fed the HC diet was significantly (P \ 0.05) higher than that of fish fed the HL and HP diets at the same feeding frequency. Feed efficiency and protein efficiency ratio were affected by both dietary composition and feeding frequency and decreased with increasing feeding frequency in the same dietary composition. Feed efficiency and protein efficiency ratio of fish fed the HC diet were significantly (P \ 0.05) lower than those of fish fed the HL diet at the same feeding frequency. Whole-body lipid content of fish fed the HL diet was significantly (P \ 0.05) higher than that of fish fed the HC and HP diets at the same feeding frequency. These results indicate that an increase of dietary lipid level compared with dietary carbohydrate level may have the advantage of a protein-sparing effect at same feeding frequency, and a once-daily feeding regime is more effective than twice daily or one feeding every 2 days to improve growth performance of juvenile rockfish grown from 4 to 21 g.

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The influence of energy level on the feed intake, growth, food conversion and body composition of Sparus aurata

Cited by 65 publications

References 28 publications

Growth and feed utilization of gilthead sea bream (Sparus aurata, L.) fed to satiation and restrictively at increasing dietary energy levels

Growth and feed utilization of gilthead sea bream (Sparus aurata, L.) fed to satiation and restrictively at increasing dietary energy levels

Dietary substitution of soy and rapeseed protein concentrates for fish meal, and their effects on growth and nutrient utilization in gilthead seabreamSparus aurataL.

Effects of dietary macronutrient level and feeding frequency on growth and body composition of juvenile rockfish (Sebastes schlegeli)

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