Feeding frequency affects feed intake and growth in juvenile pirarucu (Arapaima gigas)

Rodrigues, Aline; Lima, Adriana Ferreira; Andrade, Caniggia Lacerda; Medeiros, Rafaella Machado dos Santos de

doi:10.1590/1809-4392201802442

Cited by 8 publications

(6 citation statements)

References 39 publications

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“…Fish were acclimated to the experimental conditions for one week on the basal diet with no taurine supplementation. The experimental diets were provided three times per day until apparent satiety (09:00, 13:00 and 17:00h) for 28 days (Rodrigues et al 2019). The experimental time considered the high growth rates of the species according to the NRC (2011) recommendation and to the results obtained from previous experiments done in our laboratory.…”

Section: Fish Handlingmentioning

confidence: 99%

Effect of dietary taurine supplementation on the growth and blood physiological parameters of juvenile pirarucu

et al. 2020

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For some fish species, dietary taurine supplementation has been proven necessary in feeds with considerable utilization of vegetable proteins to substitute fishmeal. Pirarucu, Arapaima gigas feeds mainly on taurine-rich animal items in nature, therefore this study aimed to evaluate the effect of dietary taurine supplementation (0, 0.5, 1, 1.5 and 3%) on the growth and blood physiological parameters of juvenile pirarucu. A commercial feed was utilized as the basal diet for the experimental diets. Three hundred fish (20.8 ± 2.3 g) were randomly distributed in 15 tanks and fed for 28 days. At the end of the trial, dietary taurine supplementation did not affect fish growth, feed consumption and feed efficiency. The original amounts of taurine (0.18%) and methionine (1.13%) in the commercial feed (0% taurine diet) apparently sufficed to promote adequate pirarucu growth, with no variation noted in the main blood physiological parameters. Further studies to assess whether taurine is conditionally essential for the pirarucu fed methionine-deficient diets are needed to elucidate the functionality of this nutrient for the studied species.

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Section: Fish Handlingmentioning

confidence: 99%

Effect of dietary taurine supplementation on the growth and blood physiological parameters of juvenile pirarucu

et al. 2020

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“…In the present study, the mean values of weight gain from 257.82±3.14 g to 345.05±1.27 g. Among the different treatments, the highest mean monthly weight gain and the mean weight gain was recorded with the treatment two and four time feeding schedule [27]. The recorded the weight gain of Pirarucu was higher when the fish fed 3 or 4 times per day and lower in 1 times per day [28].…”

Section: Discussionmentioning

confidence: 42%

Effects of Feeding Frequency on Growth Performance and Production of Labeo rohita (Hamilton, 1822) Reared in Cage

Sarker

Jasmine

Okela

2021

AJFAR

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Optimum feeding schedule is one of the main things for the proper growth of fish and other animals. A study was conducted to optimize the effects of different feeding frequencies on growth performance and production of Rui (Labeo rohita) under pond cage culture system in Rajshahi, Bangladesh. Labeo rohita with an average weight of 302.23±4.07g (mean ± SD) were randomly stocked in 9 cages at 30 fish/cage in all the treatment. Fish were fed (4% of body weight) a commercial floating feed with three different feeding schedules: feeding of fish thrice daily in T1treatment; twice in T2 treatment and once in T3 treatment. Water quality parameters were measured during the study period. The physico-chemical parameters of pond water were within suitable ranges for fish culture in cages. The obtained values of the water quality parameters were temperature 28.26 to 28.46°C, pH 6.91 to 6.94, DO 5.04 to 5.33 mg/l, CO2 2.95 to 3.02 mg/L. The mean final weight gain was significantly highest in T1 (345.05 g) a followed by T2 (324.66 g) and T3 (257.82 g). The Specific growth rate (SGR) value were significantly higher in T1 treatment (0.91% bwd-1; Body weight per day) than T2 (0.87% bwd-1) and T3 treatment (0.73% bwd-1). The feed conversion ratio (FCR) value was significantly lower in T1 fish group (2.72) than other two T2 (2.84) and T3 (3.44) treatments. The fish productions were 18.13, 17.55 and 15.67 kg/cage/cycle in T1, T2 and T3 respectively. The highest net profit was found (Bangladeshi Taka, BDT 1445.38) in T1 compared to T2 (BDT 1329.24) and T3 treatment (BDT 937.99). The cost benefit ratio (CBR) was significantly higher in T1 (0.57) than T2 (0.53) and T3 (0.37). The feeding schedule three times in a day was most suitable than other two schedules.

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“…The knowledge of the proportion of the raw material that will be transformed into final products for sale, as well as the quantity that will be part of the processing residue, allows the logistical planning of the production and the necessary calculations for the assessment of the company's productive efficiency (Ferreira et al, 2020). Thus, the establishment of ideal categories of weight at slaughter and the yields of fish meat, under their different forms of presentation, are of great importance for fish processing units and fish farmers (Cunha et al, 2014;Rodrigues et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…The main interest of the fish producer is related to the weight of the fish to be delivered to the fish industry. However, for industry, the most important is the production and yield of fillet, product preparation, types of commercial cuts, in short, the processes that go from slaughter to industrialization and presentation of the product to the consumer (Santos et al, 2018;Rodrigues et al, 2019). In this way, pirarucu is marketed by the weight of the whole fish with an average regional sales value of US$ 1.53 kg -1 , and the processing industries prioritize animals weighing at least 8 kg.…”

Section: Discussionmentioning

confidence: 99%

Morphometric evaluations and yields of commecial cuts of pirarucu (Arapaima gigas) in different weight classes

Cavali

Nóbrega²,

Filho³

et al. 2023

Agraria

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The aimed of this study was to analyze the yield, correlations, and profitability of different commercial cuts of pirarucu (Arapaima gigas) in seven weight classes. Data on 380 fish were obtained, with weight ranging 4.7 to 48.2 kg. The Kruskal-Wallis's test (α = 0.05) was used to compare the average income. And Spearman's correlation (α = 0.05) was used to verify the correlation between morphometric measurements and yields. To obtain profit in each weight class due to the cut produced, an economic analysis was performed considering the cost of buying the fish. The weight classes 1 (< 8 kg) and 6 (23.1 to 32 kg) had the highest yields and weight classes 1 (< 8.0 kg) and 2 (8.1 to 11.0 kg) the lowest residues production. The yield of fillet mignon and tail fillet is higher in weight classes 4 (14.1 to 18 kg), 5 (18.1 to 23.0 kg) and 6 (23.1 to 32.0 kg), while the yield of loin and residues did not differ between weight classes. The production of the commecial cuts presented a higher economic return than the production of pirarucu deboned in all weight classes, but it is not recommended to take the pirarucu production above 32 kg. The measure of average circumference has a moderately positive correlation with the deboned yield, and can be used to determine the yields of this commercial cut.

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Feeding frequency affects feed intake and growth in juvenile pirarucu (Arapaima gigas)

Cited by 8 publications

References 39 publications

Effect of dietary taurine supplementation on the growth and blood physiological parameters of juvenile pirarucu

Effect of dietary taurine supplementation on the growth and blood physiological parameters of juvenile pirarucu

Effects of Feeding Frequency on Growth Performance and Production of Labeo rohita (Hamilton, 1822) Reared in Cage

Morphometric evaluations and yields of commecial cuts of pirarucu (Arapaima gigas) in different weight classes

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