Intensive shrimp growout trials in a round pond

Wyban, James A.; Sweeney, James N.

doi:10.1016/0044-8486(89)90076-8

Cited by 52 publications

(35 citation statements)

References 9 publications

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“…L. vannamei, Robertson et al (1993) and Tacon et al (2002) showed a positive effect on shrimp growth when the feeding frequency was increased. Wyban and Sweeney (1989) found similar results for Fenneropenaeus merguiensis. In agreement with our results for the frequencies of two, three and four times per day, Velasco et al (1999) did not observe differences in the growth or survival of L. vannamei fed three, five, eight, eleven or fifteen times per day.…”

Section: Discussionsupporting

confidence: 72%

Feeding frequency and growth performance of juvenile pink shrimp (Farfantepenaeus paulensis)

Pontes¹,

Marques

Andreatta

et al. 2015

Arq. Bras. Med. Vet. Zootec.

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It is generally believed that increasing feeding frequency has immediate benefits, including reduced nutrient leaching and increased shrimp growth. In this context, the aim this work was to evaluate the effect of feeding frequency in growth performance of Farfantepenaeus paulensis. Juveniles of Farfantepenaeus paulensis were grown for 30 days in pen enclosures, at a stocking density of 5 shrimp/m 2 . The shrimp were fed on feeding trays at a rate of 8% of their biomass per day, with treatments of one, two, three and four times per day, with four replicates each. The results showed no differences (5% probability) in biomass gain of F. paulensis when feed was offered two, three or four times per day. However, it was observed that the once a day frequency had a negative influence on weight gain for this species of shrimp. We conclude that the supply of food with 35% crude protein twice a day is sufficient for the growth of F paulensis. Feeding frequency of three or four times can provide increased spending in the cultivation of juveniles of this species.Keywords: feeding frequency, shrimp culture, aquaculture RESUMO Acredita-se que uma frequência maior de alimentação traz benefícios imediatos, incluindo a redução da

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Section: Discussionsupporting

confidence: 72%

Feeding frequency and growth performance of juvenile pink shrimp (Farfantepenaeus paulensis)

Pontes¹,

Marques

Andreatta

et al. 2015

Arq. Bras. Med. Vet. Zootec.

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“…22, 23 Appropriate NaCl concentration for shrimp culture specially L. vannamei has been suggested previously at 10–15 ppt. 23 In this study, both strain showed the highest antibacterial activity at 1% salinity.…”

Section: Resultsmentioning

confidence: 99%

Selection and identification of non-pathogenic bacteria isolated from fermented pickles with antagonistic properties against two shrimp pathogens

et al. 2012

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In this study, potential probiotic strains were isolated from fermented pickles based on antagonistic activity against two shrimp pathogens ( Vibrio harveyi and Vibrio parahaemolyticus ). Two strains L10 and G1 were identified by biochemical tests, followed by16S ribosomal RNA gene sequence analysis as Bacillus subtilis, and characterized by PCR amplification of repetitive bacterial DNA elements (Rep-PCR). Subsequently, B. subtilis L10 and G1 strains were tested for antibacterial activity under different physical conditions, including culture medium, salinity, pH and temperature using the agar well diffusion assay. Among the different culture media, LB broth was the most suitable medium for antibacterial production. Both strains showed the highest level of antibacterial activity against two pathogens at 30 °C and 1.0% NaCl. Under the pH conditions, strain G1 showed the greatest activity against V. harveyi at pH 7.3–8.0 and against V. parahaemolyticus at pH 6.0–8.0, whereas strain L10 showed the greatest activity against two pathogens at pH 7.3. The cell-free supernatants of both strains were treated with four different enzymes in order to characterize the antibacterial substances against V. harveyi . The result showed considerable reduction of antibacterial activity for both strains, indicating the proteinaceous nature of the antibacterial substances. A wide range of tolerance to NaCl, pH and temperature was also recorded for both strains. In addition, both strains showed no virulence effect in juvenile shrimp Litopenaeus vannamei . On the basis of these results and safety of strains to L. vannamei , they may be considered for future challenge experiments in shrimp as a very promising alternative to the use of antibiotics.

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“…No obstante, la sobrevivencia en la PC puede considerarse muy buena por tratarse de un cultivo en alta densidad que es el parámetro más importante para la efectividad del cultivo (Fóes et al 2011). Ambas sobrevivencias fueron superiores a las obtenidas en temperaturas similares (65% a 30°C) en sistemas superintensivos (100/ m 2 ) de biofloc (Hostins et al 2015) y ligeramente inferiores a la obtenida en un sistema considerado como intensivo con densidades de siembra de 45 camarones/m 2 (83%; Wyban & Sweeney, 1989). En otros estudios, no obstante, las sobrevivencias no han sido afectadas por las densidades de siembra (Allan & Maguire, 1992;Sookying et al 2011).…”

Section: Discussionunclassified

Crecimiento compensatorio y producción en las fases de precría, preengorde y engorde comercial del camarón blanco, <i>Litopenaeus vannamei</i>, en Costa Rica

Valverde-Moya

Alfaro-Montoya²

2015

Rev. Mar. Cost.

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Intensive shrimp growout trials in a round pond

Cited by 52 publications

References 9 publications

Feeding frequency and growth performance of juvenile pink shrimp (Farfantepenaeus paulensis)

Feeding frequency and growth performance of juvenile pink shrimp (Farfantepenaeus paulensis)

Selection and identification of non-pathogenic bacteria isolated from fermented pickles with antagonistic properties against two shrimp pathogens

Crecimiento compensatorio y producción en las fases de precría, preengorde y engorde comercial del camarón blanco, <i>Litopenaeus vannamei</i>, en Costa Rica

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