Daily ration of juvenile <i>Coregonus lavaretus</i> (L.) fed on living zooplankton

Troschel, Hans-Julius; Rösch, Roland

doi:10.1111/j.1095-8649.1991.tb03095.x

Cited by 14 publications

(10 citation statements)

References 19 publications

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“…Similar dome‐shaped trajectories have been reported in other fish species, and variation in gut residence time was frequently invoked as the main factor behind this pattern (e.g. several marine fish species, Houde & Schekter ; vendace and several European cyprinids, Marmulla & Rösch ; Troschel & Rösch ; spotted seatrout, Wuenschel & Werner ; sharptooth catfish, García‐Ortega et al . ).…”

Section: Discussionsupporting

confidence: 69%

Ontogenetic variation of food intake and gut evacuation rate in larvae of the doncellaPseudoplatystoma punctifer, as measured using a non-destructive method

et al. 2011

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Food intake (FI) and gut evacuation (Rg) were measured in larvae of Pseudoplatystoma punctifer (4.5–18.4 mm SL) fed Artemia nauplii, taking advantage of the translucence of their abdominal region to achieve this in a non‐destructive way, using digital photographs and mathematical reconstruction of gut volume content (ellipsoidal and cylindrical models for stomach and intestine respectively). The inaccuracy of the method, with reference to counts of nauplii following fish dissection, was low (2.9 ± 1.5%) and independent of fish size (P = 0.6153). Pigmentation hampered measurement in fish >18–19 mm SL. Anaesthesia was needed in fish >9.5 mm SL, thereby preventing the measurement of Rg in individual fish. The FI increased rapidly during the ontogeny, passing from <7% M at 0.6 mg, to 14% M at 1 mg and 21% M at 15–40 mg, and then decreased slightly in larger fish. At 28.5°C, Rg (% M h−1) was modelled as Rg = −8.22 + 12.11 log FI + 6.30 log M – 12.67 (log M)2 (R2 = 0.904, d.f. = 27, with FI in% M and M in mg). Extrapolations of Rg over 24 h gave estimates of daily food rations that fit well with those measured in cannibalistic P. punctifer.

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Section: Discussionsupporting

confidence: 69%

Ontogenetic variation of food intake and gut evacuation rate in larvae of the doncellaPseudoplatystoma punctifer, as measured using a non-destructive method

et al. 2011

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“…The daily ration of fish larvae in Lake Constance is at its maximum during May and June (Troschel and Rö sch, 1991), suggesting that fish reproduction is adapted to exploit the mass occurrence of daphnids during this period. A shift in the timing of daphnid development by approximately 2 months may result in a temporal mismatch between the maximum demand of fish larvae and the maximum of daphnid biomass with negative effects on year-class strength of fish.…”

Section: Discussionmentioning

confidence: 98%

The response ofDaphniato changes in trophic status and weather patterns: a case study from Lake Constance

Straile

Geller²

1998

ICES Journal of Marine Science

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“…Opuszynski and Shireman (1991) recommended lower rations, in the range 2.0-5.7%, for big head carp, Aristichthyes nobilis. The maximum daily ration for cyprinids is higher than for coregonads (Troschel and Rosch 1991). Elliott (1975) recommended daily rations of 11.3% of bw per day for brown trout, Salmo trutta.…”

Section: Discussionmentioning

confidence: 99%

Effect of ration size on growth, body composition, and energy and protein maintenance requirement of fingerling Indian major carp, Labeo rohita (Hamilton)

Ahmed

2007

Fish Physiol Biochem

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An eight-week feeding trial has been conducted to determine the optimum ration for Indian major carp, Labeo rohita, fingerling (4.10 ± 0.30 cm, 0.55 ± 0.16 g) by feeding a purified diet (40% CP; 3.61 kcal g -1 GE) at six levels, 2, 4, 6, 8, 10, and 12% of body weight per day, at 0800 and 1600 h, in triplicate, to 20 fish per trough fitted with a water flow-through system. Highest weight gain, best feed conversion ratio (FCR), best specific growth rate (SGR%), and highest protein efficiency ratio (PER) were evident for rations of 6-8% body weight. Second-degree polynomial regression analysis for FCR, PER, protein, and energy retention data indicated the break-points occurred at 6.55, 6.75, 6.80, and 6.95% bw per day, respectively. Significant (P < 0.05) differences between body composition were observed for fish fed different rations. Maximum body protein content was recorded for 6% and 8% rations. A linear increase in body fat content was evident with increasing ration.Body moisture and ash content remained nonsignificantly (P > 0.05) low for higher rations, however. On the basis of these results it is recommended that feeding in the range 6.5-7.0% bw per day corresponding to 2.6-2.8 g protein and 23.49-25.31 kcal energy per 100 g of the diet per day is optimum for growth and efficient feed utilization of Labeo rohita. Results for 2-4% rations (0.8-1.6 g protein and 7.23-14.46 kcal energy) suggest these amounts approximate to the maintenance requirement of this fish.

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Daily ration of juvenile Coregonus lavaretus (L.) fed on living zooplankton

Cited by 14 publications

References 19 publications

Ontogenetic variation of food intake and gut evacuation rate in larvae of the doncellaPseudoplatystoma punctifer, as measured using a non-destructive method

Ontogenetic variation of food intake and gut evacuation rate in larvae of the doncellaPseudoplatystoma punctifer, as measured using a non-destructive method

The response ofDaphniato changes in trophic status and weather patterns: a case study from Lake Constance

Effect of ration size on growth, body composition, and energy and protein maintenance requirement of fingerling Indian major carp, Labeo rohita (Hamilton)

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