The effect of dietary protein and total energy content on digestive enzyme activities, growth and survival of <i>Litopenaeus setiferus</i>
 (Linnaeus 1767) postlarvae

Guzmán, Carolina; Gaxiola, Gabriela; Rosa, Cláudia Severo da; Torre-Blanco, Alfonso

doi:10.1046/j.1365-2095.2001.00161.x

Cited by 41 publications

(31 citation statements)

References 28 publications

(38 reference statements)

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“…) and postlarvae white shrimp ( Litopenaeus setiferus ) (Guzman et al . ) were also affected by dietary protein level. The trypsin activity value was higher in on‐growing gibel carp, proving that digestion ability of gibel carp developed with fish grows.…”

Section: Discussionmentioning

confidence: 97%

Comparative studies on dietary protein requirements of juvenile and on-growing gibel carp (Carassius auratus gibelio) based on fishmeal-free diets

Han

Zhu

et al. 2015

Aquacult Nutr

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Section: Discussionmentioning

confidence: 97%

Comparative studies on dietary protein requirements of juvenile and on-growing gibel carp (Carassius auratus gibelio) based on fishmeal-free diets

Han

Zhu

et al. 2015

Aquacult Nutr

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“…The higher dietary protein level did not further improve the PER and protein gain. This pattern suggests that excess protein is diverted for catabolism, thereby reducing the protein retention efficiency (Guzman et al 2001). The lower PER or protein gain in fish fed the diet with 29 and 34% protein might be related to the adverse effects of high dextrin levels on digestive physiology (Webster and Lim 2002).…”

Section: Discussionmentioning

confidence: 99%

Dietary Protein Requirement of Juvenile Dianchi Golden‐line Barbell, Sinocyclocheilus grahami

Deng

Zhang

Han

et al. 2014

J World Aquaculture Soc

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A 10-wk feeding trial was conducted to estimate the dietary protein requirements of juvenile Dianchi golden-line barbell, Sinocyclocheilus grahami (initial average weight 7.55 g). Five isocaloric diets were formulated to contain graded levels of protein (29, 34, 39, 44, and 49%). Each diet was fed to triplicate groups of fish in a recirculating rearing system maintained at 18-22 C. Feed intake of fish fed the diet with 39% protein was significantly higher than those fed the diet with 29, 34, and 49% protein (P < 0.05). Weight gain, specific growth rate (SGR), and protein gain significantly increased with increasing dietary protein levels up to 39% (P < 0.05), whereas no significant differences were observed among fish fed the diet with 39, 44, and 49% protein (P > 0.05). In contrast, feed conversion ratio was significantly decreased with increasing dietary protein levels up to 39%. Maximum protein retention and protein efficiency ratio were observed in fish fed the diet with 39% protein. The regression analysis based on SGR and protein gain showed that the dietary protein requirements of juvenile S. grahami were 38.57% or 41.09% (equivalent to ca. 32.94% or 35.42% estimated digestible protein) of diet with a calculated digestible energy of 3.6 kcal/g.

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“…Increased energy retention in lower dietary protein diets (SPC-42 and SPC-32) may be related to the efficiency of nutrient utilization. Excess dietary protein is diverted for catabolism creating an imbalance in the nutrient profile of the diets, reducing protein retention (Guzman et al, 2001). Furthermore, it has been demonstrated in young pigs that dietary protein is used less efficiently than carbohydrate or lipid for energy retention (Van Milgen et al, 2001).…”

Section: Growthmentioning

confidence: 99%

Feed intake, molt frequency, tissue growth, feed efficiency and energy budget during a molt cycle of mud crab juveniles, Scylla serrata (Forskål, 1775), fed on different practical diets with graded levels of soy protein concentrate as main source of protein

Nguyen¹,

Chim²,

Lemaire³

et al. 2014

Aquaculture

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Feed intake, molt frequency, tissue growth, feed efficiency and energy budget during a molt cycle of mud crab juveniles, Scylla serrata (Forskål, 1775), fed on different practical diets with graded levels of soy protein concentrate as main source of protein There has been growing interest in the development of mud crab aquaculture in New Caledonia. However, for this to become established at a commercial level, a cost-effective formulated feed based on internationallyavailable ingredients needs to be developed. We have evaluated the optimal dietary protein content for juvenile crabs, Scylla serrata (Forskål, 1775), using a series of diets with a protein content ranging from 27 to 49% and soy protein concentrate (SPC) as the main protein source. For this purpose, 54 individually housed crabs were allocated to five dietary treatments (n = 10 or 11). The crabs were fed ad libitum, for 81 days with the allocated diets. The apparent digestibilities of dry mater, crude protein and energy were high (96.2-97.3%), irrespective of the diet. The voluntary feed intake (VFI) of crabs widely varied from 46 to 220 g kg −1 of fresh initial body weight per week (iBW week −1 ) whatever the diet. However, SPC intake and protein intake increased significantly with dietary protein content up to the diet with 40% crude protein, but did not increase further with diets containing 44% and 49% crude protein. The cumulative molts were strongly affected by the VFI levels or energy intake and also, to a lesser extent, by the levels of SPC or protein in diets. Two phases in tissue gain were observed after ecdysis: an initial deposition phase lasting around 30 days followed by a plateau which lasted until the next molt. The daily tissue growth was 16.5% of dry body weight (dry BW) one day after ecdysis and dramatically decreased to 3.6% of dry BW over the first 10 days, then decreased more slowly to the minimum value of 1.3% of dry BW over the next 70 days. During the course of experiment, the best growth (tissue growth and molt frequency) and the best feed efficiency (FCR, PER, retention of proteins and lipids) were obtained with crabs fed on the diet with 40% crude protein. This result was confirmed by a bioenergetic study which showed significantly higher allocation of the energy intake for growth (RE) of crabs fed on diet 40% crude protein. Finally, under our experimental conditions, 1 kg of juvenile crabs required 6.5 ± 1.1 g of protein per day. This level was obtained with the diet SPC-42 that contained 40% of protein of which almost three quarters were derived from SPC. Two hypotheses are proposed to explain the negative effect of high level of SPC or protein on growth and feed efficiency for crabs fed on in diets containing 52% and 60% SPC.

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The effect of dietary protein and total energy content on digestive enzyme activities, growth and survival of Litopenaeus setiferus (Linnaeus 1767) postlarvae

Cited by 41 publications

References 28 publications

Comparative studies on dietary protein requirements of juvenile and on-growing gibel carp (Carassius auratus gibelio) based on fishmeal-free diets

Comparative studies on dietary protein requirements of juvenile and on-growing gibel carp (Carassius auratus gibelio) based on fishmeal-free diets

Dietary Protein Requirement of Juvenile Dianchi Golden‐line Barbell, Sinocyclocheilus grahami

Feed intake, molt frequency, tissue growth, feed efficiency and energy budget during a molt cycle of mud crab juveniles, Scylla serrata (Forskål, 1775), fed on different practical diets with graded levels of soy protein concentrate as main source of protein

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