Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus

Khan, M. Z. I.; Ang, K. J.; Ambak, Mohd Azmi; Saad, Che Roos

doi:10.1016/0044-8486(93)90448-8

Cited by 81 publications

(76 citation statements)

References 13 publications

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“…Steffens (1981) also reported that raising the dietary protein level improves the growth rate and food conversion but reduces PER and protein productive values (PPV) in Cyprinus carpio. The dietary protein contents showed an obvious positive relation with carcass protein with a corresponding negative relation with fish body moisture contents which was reported earlier (Jauncey, 1982;Khan et al, 1993).…”

Section: Discussionsupporting

confidence: 55%

“…This typical growth response to changing dietary protein level in isocaloric diets has been observed in many other species irrespective if rearing strategies (Jauncey, 1982;Khan et al, 1993;Vergara et al, 1996;Hossain et al, 2005). This decrease in weight gain at protein levels above the optimum may be due to a reduction in available energy for growth because of inadequate non-protein energy necessary to deaminate and excrete excess absolute amino acids as described by Cho et al (1985) and Vergara et al (1996).…”

Section: Discussionmentioning

confidence: 99%

“…Khan et al (1993) reported that the whole body protein of M. nemeurus increased significantly with increasing dietary protein levels up to 42% and then decreased when fish were fed with higher protein levels. Works on other fish species have found a similar increase in body protein content with increasing dietary protein (Cowey et al, 1972;Jauncey, 1982).…”

Section: Discussionmentioning

confidence: 99%

“…cavasius (Hosssain et al, 2005), Mahseer, Tor putitura (Hossain et al, 2002), Malaysian freshwater catfish, Mystus nemurus (Khan et al, 1993), tilapia, Tilapia mossambicus (Jauncey, 1982), milk fish, Chanos chanos (Lim et al, 1979) and rainbow trout, Salmo gairdneri (Satia, 1974).…”

Section: Discussionmentioning

confidence: 99%

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Seenivasan¹,

Bhavan²,

Radhakrishnan³

et al. 2012

Turk. J. Fish. Aquat. Sci.

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The optimum dietary protein requirement of a Thai strain of climbing perch (Anabas testudineus, Bloch, 1792) fry was investigated by feeding six semi-purified diets containing varying levels of dietary protein within a range of 25-50% over an 8 week feeding period. Fish meal was used as protein source. The experiment was conducted in a recirculatory system consisting 18 glass aquaria of each 65 litre capacity. Each treatment had three replicates. Each of the aquaria was stocked with 12 fingerlings of A. testudineus with a mean initial weight of 1.04±0.02 g. Fish were fed to apparent satiation three times daily. Statistical analysis of growth data showed that percent weight gain, feed conversion ratio (FCR), protein efficiency ratio (PER) and body composition were significantly (P<0.05) affected by dietary protein levels. The weight gain and specific growth rate (SGR) of fish in all dietary groups increased proportionally with the increase in dietary protein concentration to level of 40% and thereafter decreased with further increase in dietary protein levels. Fish fed diet 4 containing 40% protein level showed significantly (P<0.05) the highest weight gain. The FCR values ranged between 1.95 and 5.73 and the best FCR value was obtained with diet 4. The PER decreased with increasing dietary protein levels. The PER values ranged between 0.64 and 1.27 and the apparent net protein utilization (ANPU%) values ranged between 9.76 and 19.80%. In general, there was a progressive decrease in carcass protein and an increase in carcass lipid. On the basis of observed weight gain, SGR and FCR, a diet containing 40% protein with a protein to energy (PE) ratio of 92.63 (mg protein/Kcal gross energy) is recommended for maximum growth of A. testudineus under experimental condition used in this study.

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Seenivasan¹,

Bhavan²,

Radhakrishnan³

et al. 2012

Turk. J. Fish. Aquat. Sci.

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“…Likewise, Lee et al (2002) demonstrated that moisture of fish dorsal muscle was inversely correlated to the dietary protein levels in japanese flounder. In addition, proximate composition of fish showed a similar trend with Khan et al (1993).…”

Section: Resultssupporting

confidence: 53%

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Kim¹,

Kim²,

Han³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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We determined the optimum dietary protein level required for a family selected (F-5 generation) strain of olive flounder Paralichthysolivaceus. Six isocaloric diets (average 20.7 kJ/g diet gross energy) were formulated to contain crude protein levels (CP) as 30 (CP30), 40 (CP40), 45 (CP45), 50 (CP50), 55 (CP55) and 60% (CP60). Triplicate groups of fish averaging 58.4 ± 0.28g (mean ± SD) were randomly distributed into the tanks as groups of 25 fish and fed one of the 6 diets at apparent satiation twice a day. At the end of 8-weeks feeding trial, weight gain (WG) and specific growth rate of fish fed 50 to 60% CP diets were significantly higher than those of fish fed 30 to 45% CP diets. Feed efficiency and protein efficiency ratio were inversely related to the dietary protein level. Broken-line model analysis indicated that the optimum dietary protein level was 50.1% for maximum WG in selected strain of olive flounder. The second-order polynomial regression analysis revealed that the maximum WG occurred at 59.2%. Based on the study, the optimum dietary protein level for maximum growth of family selected olive flounder could be greater than 50.1%, but less than 59.2% CP with 20.7 kJ/g gross energy.

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Effect of Dietary Energy to Protein Ratio on Growth, Biological Indices, Proximate Composition, and Amino Acid Profiles in the Muscle of Varicorhinus macrolepis

Wang

Wang²,

Wang

et al. 2018

N American J Aquac

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A 150-d feeding experiment was conducted to assess the effect of the dietary energy to protein ratio (E/P ratio) on growth, biological indices, proximate composition, and amino acid profiles in the muscle of Varicorhinus macrolepis. Six experimental diets were formulated with different E/P ratios (30.51, 33.90, 37.82, 42.34, 47.70, and 54.09 kJ/g). In the experiment, 360 fish with a mean weight of 8.75 g (SD, 0.59) were randomly divided into six groups (three replicates per group, 20 fish per replicate) and fed three times daily with the experimental diet. Results showed that when the dietary E/P ratio was 37.82 kJ/g, Varicorhinus macrolepis tended to gain the highest specific growth rate. With a change in the increment of dietary E/P ratio, the condition factor, intestosomatic index, hepatosomatic index, and viscerosomatic index all changed in the quadric polynomial regression model. Muscle crude lipid content showed a tendency of leveling-off first and then increased with increasing dietary E/P ratio. Varicorhinus macrolepis gained the highest concentration of total amino acids and essential amino acids when the dietary E/P ratio was 37.82 kJ/g. Except for methionine + cysteine, phenylalanine + tyrosine, and the amino acid score of lysine, the amino acid scores and chemical scores of the other essential amino acids were highest when the dietary E/P ratio was 37.82 kJ/g. These results suggest that Varicorhinus macrolepis obtained optimal growth and muscle amino acid composition when the dietary E/P ratio was 37.82 kJ/g.

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Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus

Cited by 81 publications

References 13 publications

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Effect of Dietary Energy to Protein Ratio on Growth, Biological Indices, Proximate Composition, and Amino Acid Profiles in the Muscle of Varicorhinus macrolepis

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