Effects of bamboo substrate and supplemental feeding on growth and production of hybrid red tilapia fingerlings (Oreochromis mossambicus×Oreochromis niloticus)

Keshavanath, P.; Barlaya, Gangadhar; Ramesh, T.; Dam, A. A. van; Beveridge, M. C. M.; Verdegem, Marc

doi:10.1016/j.aquaculture.2003.12.017

Cited by 47 publications

(34 citation statements)

References 17 publications

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“…Several authors have reported a reduction in oxygen level in tanks where substrates are installed, because they affect surface aeration. Further, plant substrates increase the biological oxygen demand, contributing to DO reduction in culture tanks (Dharmaraj et al, 2002;Joice et al, 2002;Mridula et al, 2003;Keshavanath et al, 2004). For most tropical fish species, the minimum DO concentration should be higher than 4.0 mg/L (Tavares, 1994); in the present study the average values remained above 5.0 mg/L.…”

Section: Water Qualitymentioning

confidence: 51%

“…Studies conducted in fish ponds comparing the effect of food supply versus periphyton have found that the provision of substrates can reduce the need for artificial food and can be an alternative to commercial food in the culture of herbivorous fish and prawn Keshavanath et al, 2002Keshavanath et al, , 2004Uddin et al, 2008Uddin et al, , 2009García Gonzalez et al, 2011). Milstein et al (2013) reported that under low density tilapia farming as required in organic aquaculture, the use of substrates equivalent to 40-50% of the pond surface allowed a 30-40% reduction in food input, without negatively affecting fish growth.…”

Section: Introductionmentioning

confidence: 99%

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Untitled

Tortolero¹,

Cavero²,

Brito³

et al. 2016

Turk. J. Fish. Aquat. Sci.

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Influences of two types of substrates, natural (macrophyte, Pistia stratiotes) and artificial (plastic screen) were evaluated at 3 differrent densities (10, 20, 30%) on periphyton development, water quality and growth performance of jaraqui (Semaprochilodus insignis). Fish of average initial weight 1.46-1.69 g and length 4.15-4.26 cm stocked at 1/m 2 in 46 m 2 masonry tanks were grown for 120 days. The tanks were fertilized with urea, triple superphosphate and wheat bran. The types and densities of substrates tested did not drastically influence water quality. Natural substrate harboured higher periphyton biomass (1.48±0.09 mg/cm 2 ) as well as species diversity (28 genera) than the artificial substrate (0.84±0.12 mg/cm 2 , 20 genera). Fish in 10% and 20% artificial substrate and 20% natural substrate treatments showed better mean values of body weight (24.64, 23.86, 29.26 g respectively) on termination of the experiment. Fish survival was the lowest in 30% natural substrate (84.1%) and highest in 10% artificial substrate (94.2%). Higher fish biomass was recorded in 20% natural and 10% artificial substrate treatments (25.05 and 21.71 g/m 2 ), which amounts to a four-month yield of 250 and 217 kg/ha in the two treatments.

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Section: Water Qualitymentioning

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Untitled

Tortolero¹,

Cavero²,

Brito³

et al. 2016

Turk. J. Fish. Aquat. Sci.

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show abstract

“…The study showed a significant difference in periphyton biomass between the lowest stocking density (50 fish/tank) and the high stocking densities (100, 200 and 400 fish/tank). The average values for periphyton biomass in the AFDW reported in an earlier experiment with bamboo substrates and supplemental feeding, and fish were stocked at 1 fish/m 2 was 0.12 mg/cm 2 (50% substrate density without feeding) to 0.10 mg/cm 2 (100% substrate density with feeding) (Keshavanath et al, 2004). These values are lower when compared to the average periphyton AFDM during the culture period of the present study, which indicates that a substrate density of 50% of total pond surface area is sufficient for periphyton production in a system.…”

Section: Discussionmentioning

confidence: 92%

Density-Dependent Growth and Production of Nile Tilapia (Oreochromis niloticus) Fingerlings Relative to Phytoplankton and Periphyton Biomass

Jiwyam

2014

Our Nature

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The growth, production and survival of Nile tilapia Oreochromis niloticus, with an average individual weight of 0.2 g were used to determine the density-dependent growth and production relative to phytoplankton and periphyton biomass in periphyton-based aquaculture. The trial was conducted in 10 m 2 concrete tanks for a 56 day period. A 10 cm layer of soil was placed at the bottom of each tank. To act as substrates for periphyton, bamboo poles with an approximate submerged surface area of 50% to that of the total tank surface area were vertically posted in the tank bottom. A weekly fertilizer dose of urea and triple superphosphate at a rate of 28 kg N and 7 kg P/ha/week was added. Four stocking densities in triplicate were used: 5, 10, 20, and 40 fish/m 2 (50, 100, 200, and 400 fish/tank). The results indicated that the carrying capacity of periphyton-based tanks for Nile tilapia was 293 g/m 2 in a 56-day culture period. The relationships between gross yields of tilapia (y) and periphyton dry matter (x), or chlorophyll a (x) were described as y = 353.2483-109.1809x, R 2 = 0.5646, P = 0.005, y = 125.5916 + 0.9698x, R 2 = 0.5841, P = 0.004. Provision of substrates at 50% of total tank surface area was sufficient for periphyton production in nutrient-rich aquaculture ponds where grazing rate and fish density in the system are balanced.

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“…With tilapia (Oreochromis mossambicus×O. niloticus) using similar densities of poles, the production increased 112% at the low substrate density and 116% at the high substrate density (Keshavanath, et al 2004). In addition, the fish production increase due to feeding a quality pellet-feed with species like masher and tilapia was less than when providing substrate for periphyton development (Keshavanath, et al 2002(Keshavanath, et al , 2004.…”

Section: Vertical Substrate Additionmentioning

confidence: 99%

“…With mahseer (Tor khudree) a substrate density of 98, 5-7 diameter, poles 25/m tank increased production 41% compared to pole-free tanks. Doubling the pole density to 196 poles 25/m led to a production increase of 51% (Keshavanath, et al 2004). With tilapia (Oreochromis mossambicus×O.…”

Section: Vertical Substrate Additionmentioning

confidence: 99%