Light Control for Fish Tanks

Heinen, John M.

doi:10.1577/1548-8640(1998)060<0323:lcfft>2.0.co;2

Cited by 12 publications

(3 citation statements)

References 25 publications

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“…Water temperature was maintained at 24 ± 1°C by automatic electric heater. Illumination in the laboratory was provided by eight halogen (daylight) bulbs and maintained by electric timer at 14L : 10D as recommended by Heinen (1998). Prior to the study, ten fish were submitted to a benzocaine overdose, ground and immediately frozen in a container immersed into liquid nitrogen, and stored in a freezer (-80 o C) for later analysis of initial carcass composition.…”

Section: Methodsmentioning

confidence: 99%

Fish silage in black bass (Micropterus Salmoides) feed as an alternative to fish meal

Arruda

Borghesi

Portz

et al. 2009

Braz. arch. biol. technol.

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The objective of this study was to use the residues of fermented sardine to elaborate the acid fish silage and its use in feed for aquaculture. Biological assay was performed by feeding largemouth bass (Micropterus salmoides) fingerlings (initial weight 22g), with extruded diets (41% crude protein; 3,600 kcal/kg digestible energy) containing 0.0, 7.5, 10.0, 12.5, or 15.0% of fish silage in partial substitution to the fish meal. The feed conversion ratio and weight gain for the treatments were: 1.26 and 15.76g; 1.11 and 17.07g; 1.19 and 17.81g; 1.18 and 19.83g; 1.47 and 14.64g, respectively. No significant differences (P<0.05) were detected among the treatments. Results indicated that it was possible to use up to 15% of acid fish silage as partial substitute for fish meal in the formulation of carnivorous fish feed.

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Section: Methodsmentioning

confidence: 99%

Fish silage in black bass (Micropterus Salmoides) feed as an alternative to fish meal

Arruda

Borghesi

Portz

et al. 2009

Braz. arch. biol. technol.

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“…Water temperature was maintained at 24 ± 1°C by automatic electric heater. Illumination inside the laboratory was provided by eight halogen (daylight) bulbs and maintained by electric timer at 14L : 10D as recommended by Heinen (1998). Immediately before feeding time, the following water quality parameters were monitored: pH (pHmeter Hanna model HI 1280); dissolved oxygen (Mettler DO Meter model MO 128); ammonia and nitrite (water analysis kit HACH model FF‐2 Aquaculture).…”

Section: Methodsmentioning

confidence: 99%

Growth and body composition of juvenile largemouth bassMicropterus salmoidesin response to dietary protein and energy levels

Portz

Cyrino

Martino

2001

Aquaculture Nutrition

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To determine the dietary protein and energy requirements of juvenile largemouth bass, 1350 feed-conditioned ®shes (average weight 14.46 0.81 g) were stocked in ninety 60-L cages, set up in 1000-L tanks at three cages/tank, and fed for 64 days with a dry, extruded feed containing six levels of crude protein (CP) (340±540 g kg ±1 , with increases of 40 g kg ±1 ) and ®ve levels of energy (150.7±171.7 kJ g ±1 feed, with increases of 5.2 kJ). The trial was set up in a 6´5 factorial, completely randomized design (n 3). Weight gain (WG), daily feed consumption (DFC), feed conversion rate (FCR), protein eciency ratio (PER), speci®c growth rate (SGR), protein and energy retention were recorded and evaluated. There was no interaction between feed energy and protein levels with all parameters evaluated. Data analysis by the broken line method showed that the minimum dietary requirement for maximum daily weight gain of 8.0 g kg ±1 is 435.9 g kg ±1 CP; the best feed conversion ratio (1.04:1) was attained with a minimum of 448.2 g kg ±1 CP; a minimum of 162.1 kJ g ±1 ; DFC was reduced as dietary protein and energy levels increased; dietary levels of 460±500 g kg ±1 CP led to best PER (1.665); best values for protein (33.14 g 100 g ±1 ) and energy (26.87 g 100 g ±1 ) retention were observed for ®sh feeding on the 420 g kg ±1 CP ration. Limits of energy to protein ratio to feed largemouth bass are 25.01 and 26.89 mg protein kJ ±1 , enabling feed conversion ratios of 0.96±1.10. KEY WORDS 1 640.6 g kg )1 crude protein;11.59 g 100 g )1 total lipids. 2 Units kg )1 of diet: Mn 40 mg; Fe100 mg; Zn 100 mg; Cu10 mg; Co 1 mg; I 1.5 mg; Se 0.45 mg; vitamin A 36 000 UI; pyridoxine 9 mg; vitamin D 3 4500 UI; vitamin E 150 UI; vitamin B 12 90 mcg; thiamin 6 mg; ribo£avin 18 mg; vitamin K 3 4.5 mg; folate 9 mg; biotin 0.6 mg; pantothenic acid 30 mg; niacin 90 mg; vitamin C 346 mg. 3

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“…Respirometry chambers and tubing were cleaned using a sponge before starting each assay to reduce microbial interference in MO 2 , and microbial oxygen consumption of the system was measured at the end of each assay and subtracted from registered measurements of fish consumption to circumvent measurement biases. Trials were set up indoor, in an isolated room, holding tanks (500 L) supplied by closed loop water circulation system, 12-h light : 12-h dark photoperiod, "light of day" halogen lamps (Heinen 1998). Trials were carried out under Protocols CEUA-ESALQ-USP # 2014-01 and 2014-13.…”

Section: Experimental Procedures Data Analysis and Modellingmentioning

confidence: 99%

Water temperature, body mass and fasting heat production of pacu (Piaractus mesopotamicus)

Aguilar

Cruz

Mourão

et al. 2017

An. Acad. Bras. Ciênc.

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Knowledge on fasting heat production (HE f ) of fish is key to develop bioenergetics models thus improving feeding management of farmed species. The core of knowledge on HE f of farmed, neotropical fish is scarce. This study assessed the effect of body mass and water temperature on standard metabolism and fasting heat production of pacu, Piaractus mesopotamicus, an omnivore, Neotropical fresh water characin important for farming and fisheries industries all through South American continent. An automated, intermittent flow respirometry system was used to measure standard metabolic rate (SMR) of pacu (17 -1,050 g) at five water temperatures: 19, 23, 26, 29 and 33 °C. Mass specific SMR increased with increasing water temperature but decreased as function of body mass. The allometric exponent for scaling HE f was 0.788, and lied in the range recorded for all studied warm-water fish. The recorded van't Hoff factor (Q 10 ) for pacu (2.06) shows the species low response to temperature increases. The model HE f = 0.04643×W 0.7882 ×T 1.837 allows to predict HE f (kJ d -1 ) from body mass (W, kg) and water temperature (T, °C), and can be used in bioenergetical models for the species.

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Light Control for Fish Tanks

Cited by 12 publications

References 25 publications

Fish silage in black bass (Micropterus Salmoides) feed as an alternative to fish meal

Fish silage in black bass (Micropterus Salmoides) feed as an alternative to fish meal

Growth and body composition of juvenile largemouth bassMicropterus salmoidesin response to dietary protein and energy levels

Water temperature, body mass and fasting heat production of pacu (Piaractus mesopotamicus)

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