Dietary protein requirement of juvenile shi drum, Umbrina cirrosa (L.)

Akpιnar, Zafer; Sevgi̇li̇, Hüseyi̇n; Özgen, Talip; Demir, Abdullah; Emre, Yılmaz

doi:10.1111/j.1365-2109.2011.02845.x

Cited by 34 publications

(27 citation statements)

References 37 publications

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“…Similarly, ash content, moisture, crude energy, and fillet lipids were not affected by changes in dietary protein levels. This is also consistent with other studies in some fish species (Monentcham, Pouomogne, & Kestemont, 2010;Akpinar, Sevgili, Ozgen, Demir, & Emre, 2012). Dry matter and CP values were similar to those found in pirarucu juvenile fillets of 7-16 kg by Fogaça et al (2011).…”

Section: Resultssupporting

confidence: 81%

Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Júnior¹,

Santos²,

Allaman³

et al. 2017

JAS

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Pirarucu (Arapaima gigas) is a fast-growing, carnivorous species reared commercially in Amazonian countries as Brazil. Lack of a nutritionally balanced and affordable diet is a major constraint in pirarucu aquaculture, and our investigation sought to estimate the dietary protein requirement for this species. Four diets were formulated to contain increasing concentrations of digestible protein (32, 35, 38, and 41%) and fed to triplicate groups of juvenile pirarucu of around 2 kg for 18 weeks. As result, pirarucu showed no differences in feed intake, survival, or fillet yield. However, regression analysis revealed that weight gain (WG) values showed a general increasing trend with increasing dietary digestible protein (DP) level up to 36.7%. In addition, feed conversion rates were also improved with increase in dietary DP up to 36.4%. Fish fed diets containing 32 and 41% had poor feed conversion rates. Thel protein retention rate (PRR) and protein efficiency index (PER) decreased as levels of DP increased. The optimal dietary protein content for juvenile pirarucu between 1.98 and 4 kg of BW is about 36% of digestible protein on diet.

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Section: Resultssupporting

confidence: 81%

Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Júnior¹,

Santos²,

Allaman³

et al. 2017

JAS

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“…Mean values (± SEM) of the nutritional parameters from the 16L:8D group of the present study. Our results are compared with the results found in shi drum by Segato et al (2006Segato et al ( , 2007 (mean values ± SD) and Zafer et al (2012) 16L:8D group (dorsal and ventral fillet) Dorsal fillet (Segato et al, 2007) Whole-body (Segato el al., 2006) Whole -body (Zafer et al, 2012 Imsland et al (2013) studied the long-term effect of photoperiod manipulation for 46 months and found that the shortterm exposure to 24L stimulated growth, whereas the long-term rearing at 24L reduced growth. Thus, at harvest, the greatest mean weights were reached in the group previously kept to short-term exposure at 24L and then transferred to 16L:8D until harvest.…”

Section: Discussionmentioning

confidence: 89%

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Ayala¹,

Arizcún²,

Garcı́a-Alcázar³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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Three groups of shi drum Umbrina cirrosa L. were reared with different photoperiod regimes: 24L, 12L:12D and 16L:8D (natural photoperiod) during the larval period and then all of them were transferred to a natural photoperiod. At 11.8 and 20 months of age, the body growth and the muscle parameters reached the highest values in the 24L and 12L:12D groups. The 16L:8D group showed the lowest growth. When comparing 24L with 12L:12D, the highest number of white fibres was found in the 24L group, whereas the greatest fibres size was reached in the 12L:12D group.Commercial size (28-30 cm; 290-340 g) was reached at 20 months of age in the 24L and 12L:12D groups, but at 23 months in the 16L:8D group. When comparing the three groups at the commercial stage, the larval photoperiod effect was still observed, such that the highest fibres number was again found in the 24L group, whereas the greatest fibres size was reached in the 12L:12D group. The highest values of textural hardness were observed in the 16L:8D and 24L groups. A nutritional analysis was carried out in the 16L:8D group, which showed the following percentage values: 2.66, 21.2, 74.4, and 1.46 of fat, protein, moisture and ash, respectively.

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“…Excess protein in the diet increases the production cost and can lead to pollution of pond environment. Therefore, it is necessary to optimise the protein levels in the fish diets considering economics and environmental perspective (Siddiqui and Khan, 2009;Akpinar et al, 2012).…”

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confidence: 99%

Effect of varying protein levels on growth and digestive enzyme activities of pengba Osteobrama belangeri (Valenciennes, 1844)

Dube

Reddy

et al. 2017

Indian J. Fish.

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Pengba, Osteobrama belangeri (Valenciennes, 1844) is considered as one of the candidate species for diversification of aquaculture. However, only scanty information is available on its nutrient requirements. Hence, the present study was conducted on growth and digestive enzyme activities of pengba fry in response to different dietary protein levels. Six semi-purified isocaloric diets were formulated with different levels of protein at 5% increments (25, 30, 35, 40, 45 and 50%) and fed to different groups of pengba fry for a period of 60 days. Survival of fish was significantly influenced by different protein levels (p<0.05). The highest weight gain% and specific growth rate (4.17% day -1 ) was obtained at 45% protein level which thereafter declined. The best feed conversion ratio (1.46) was observed at 45% protein level and the highest protein efficiency ratio (2.14) was obtained at 25% protein level with significant difference (p<0.05). The crude protein content of fish was significantly affected by dietary protein levels (p<0.05) and highest was recorded at 45% protein diet. Moisture, ether extract and ash content did not show significant (p>0.05) variation among dietary treatments. The activity of proteolytic enzymes (proteases, typsin and chymotrypsin) and acid phosphatase were signicantly (p<0.05) enhanced by dietary protein levels up to 45%, which were found to decline thereafter. Amylase activity was significantly decreased as protein levels increased in the diet. Lipase and alkaline phosphatase activities were not influenced by dietary protein levels. In the present study, penbga fry fed with 45% protein diet, showed the best growth performance and highest digestive enzyme activities. The activity of digestive enzymes in the gut clearly demonstrated that the proteolytic enzymes are activated in response to dietary protein utilisation and also revealed that pengba fry may require high protein (45%) diet for better growth and survival. Second order polynomial regression analysis revealed that the maximum protein requirement of pengba fry was 45.1% (r 2 = 0.90). The findings of the study is expected to have significant implications for feed development for pengba aquaculture.

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Dietary protein requirement of juvenile shi drum, Umbrina cirrosa (L.)

Cited by 34 publications

References 37 publications

Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

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Effect of varying protein levels on growth and digestive enzyme activities of pengba Osteobrama belangeri (Valenciennes, 1844)

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