Growth, Body Composition, and Survival of Channel Catfish,<i>Ictalurus punctatus</i>Fry Fed Hatchery Diets Supplemented with Krill Meal

Weirich, Charles R.; O’Neal, Clifford C.; Belhadjali, Karim

doi:10.1300/j028v17n03_02

Cited by 5 publications

(5 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Traditionally, channel catfish farmers have used krill‐based products as a dietary supplement because of the well‐balanced amino acid and fatty acid profile of such products; they contain high levels of n‐3 polyunsaturated fatty acids (PUFAs) including docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). However, feeding I. punctatus fries with krill‐based supplemented diets, contrary to what was traditionally thought, did not increase the growth or survival rates of fries 108 . Zooplankton may also serve as a sustainable and reliable supplement during I. punctatus hatchery production 114 .…”

Section: Rearing Practices For Early Life Stagesmentioning

confidence: 93%

“…aquatic insects, sunfish, and congeners not removed from previous harvests). In contrast, stocking I. punctatus at the onset of exogenous feeding or 7 dph (22.8–29.1 mg BW) was shown to result in no deleterious effects on fingerling production 105,108 . Regardless of the chosen age for fry stocking into nursery ponds, these should be fertilised to ensure that adequate levels of feed are available.…”

Section: Rearing Practices For Early Life Stagesmentioning

confidence: 99%

“…However, feeding I. punctatus fries with krill-based supplemented diets, contrary to what was traditionally thought, did not increase the growth or survival rates of fries. 108 Zooplankton may also serve as a sustainable and reliable supplement during I. punctatus hatchery production. 114 However, fries fed live or dried zooplankton (copepods, cladocerans, and ostracods) performed worse in terms of somatic growth than fries fed only a compound starter diet (Finfish Starter; Ziegler Brother, USA) or a combination of the commercial diet with zooplankton.…”

Section: Ictalurus Punctatusmentioning

confidence: 99%

See 2 more Smart Citations

Development, nutrition, and rearing practices of relevant catfish species (Siluriformes) at early stages

Gisbert

Luz

Fernández

et al. 2021

Reviews in Aquaculture

View full text Add to dashboard Cite

Catfish (Siluriformes) are important species for aquaculture worldwide, with an annual production in 2018 of ca. 6 million t. This review focuses on reassessing larval development, first feeding, and early rearing practices of the most important farmed catfish species, along with some candidate species for aquaculture diversification: Pangasianodon hypophthalmus (Pangasiidae), Clarias gariepinus (Clariidae), Ictalurus punctatus (Ictaluridae), Pseudoplatystoma spp. (Pimelodidae), Heteropneustes fossilis (Heteropneustidae), Rhamdia quelen (Heptapteridae), Ompok bimaculatus (Siluridae), and Lophiosilurus alexandri (Pseudopimelodidade). These species are initially reared indoors from one day to two weeks and are then transferred to fertilised outdoor ponds where they either feed on natural zooplankton or compound feeds. With the exception of C. gariepinus, I. punctatus, R. quelen and P. hypophthalmus, consistent and reliable fry production is a bottleneck that limits the expansion of farming of other species, such as Pseudoplatystoma spp., H. fossilis, O. bimaculatus, and L. alexandri. Rearing systems (extensive, semi‐extensive, intensive) and feeding protocols vary with species and geographical regions. Cannibalism and size heterogeneity are common, and these features create problems for larval and fry rearing of catfish species. Information about their nutritional requirements is required for the formulation of compound feeds that can guarantee high survival and good growth of catfish fries. However, such knowledge for most species is scarce, although some data are available for I. punctatus. Further genomic resources might allow fine‐tuning rearing success. This review describes some successes in this field, and also highlights gaps in knowledge to guide future research that can promote the development of catfish aquaculture.

show abstract

Section: Rearing Practices For Early Life Stagesmentioning

confidence: 93%

Section: Rearing Practices For Early Life Stagesmentioning

confidence: 99%

Section: Ictalurus Punctatusmentioning

confidence: 99%

See 1 more Smart Citation

Development, nutrition, and rearing practices of relevant catfish species (Siluriformes) at early stages

Gisbert

Luz

Fernández

et al. 2021

Reviews in Aquaculture

View full text Add to dashboard Cite

show abstract

“…These studies variously describe increased growth, feed intake, conversion efficiencies, enhanced coloration, and favorable fatty acid (FA) profiles in treated fish, including salmonids [42]. However, there are instances recorded in the literature [45][46][47][48][49] where the addition of KM to diets, or as a FM replacer at various concentrations, had variable, no beneficial, and even negative effects, and these too include studies with salmonids [50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Influence of Krill Meal on the Performance of Post-Smolt Atlantic Salmon That Are Fed Plant-Based and Animal-Based Fishmeal and Fish Oil-Free Diets

Barrows,

Campbell,

Gaylord

et al. 2023

Fishes

View full text Add to dashboard Cite

The purpose of this study was to determine the influence of krill meal (KM) inclusion at various levels (0%, 2.5%, 5%) in plant-based and animal-based feeds, that were fishmeal (FM) and fish oil (FO) free, on Atlantic salmon growth. A FM/FO feed containing 0% KM was the control. Using a 2 × 3 factorial approach, diets were randomly assigned to one of 28 0.5 m3 flow-through tanks (n = 4 tanks per diet) initially stocked with 60 fish (148.4 ± 12.9 g; 23.6 ± 0.8 cm; condition factor (K) = 1.16 ± 0.08) each. Salmon were fed for 90 days using automatic feeders ad libitum. On day 45, stocking densities were reduced to 45 fish per tank by the random removal of 15 individuals to remove any potential of density affecting growth through the trial end. Water temperature, oxygen saturation, pH, and salinity throughout the trial were 11.8 °C, 103.5%, 7.38, and 32.0 g L−1, respectively. Fish fed plant-based feed without KM were lighter (p < 0.05) than all other groups at day 45 and 90, but those fed a plant-based feed with KM had comparable growth and feed intake compared to that of fish fed the control diet. Irrespective of the presence of KM, animal-based feeds achieved comparable weight growth (p > 0.05) to the control and 5% KM plant-based groups, with KM increasing feed intake (p < 0.05). Between day 45 and 90, feed conversion ratios increased in all groups except the control and 0% KM plant-based group, while specific growth rates (SGRs) decreased for all except the 0% KM plant-based diet. Between-group differences (p < 0.05) were also noted for the thermal growth coefficient. No differences were recorded in visceral or intestinal weight, and whole-body lipid levels were identical, proportional for all groups. Although differences (p < 0.05) were apparent in the concentrations of individual fillet fatty acids between groups, a 75 g serving size of any treatment would be sufficient to exceed daily intake recommendations for EPA + DHA. This trial determined that benefit, in terms of feed intake and growth performance, was gained when KM was added to plant-based feeds. However, no such advantage was observed when KM was used with animal-based feeds.

show abstract

“…were shown to increase their weight by 61-98% more than if they were only fed a catfish-starter diet (Weirich et al 2000). Krill meal is also used as a dietary supplement in some hatcheries (Weirich et al 2005). While artemia is commercially available, increased demand and variable yearly harvest due to changes in environmental conditions has dramatically increased the cost of artemia cysts.…”

mentioning

confidence: 99%

Evaluation of Zooplankton in Hatchery Diets for Channel Catfish Fry

2009

View full text Add to dashboard Cite

The efficacy of zooplankton as a supplemental hatchery diet for fry of channel catfish Ictalurus punctatus was evaluated. When a commercial diet is used as a reference, fry fed exclusively on zooplankton-either live or driedperformed poorly in their growth rate. However, when live or dried zooplankton were fed to fry in conjunction with the commercial diet, fry weight increased 40-50% over the weight of fry fed the commercial diet alone in a 19-d feeding trial.Data from this study indicate that zooplankton may serve as a sustainable and reliable supplement during hatchery production. These data also reaffirm the importance of zooplankton as a feed source in the growth of channel catfish fry. Zooplankton are important in catfish fry culture, and when zooplankton are present with commercial diets, improved growth results. Based on results of this study, supplemental feeding of zooplankton to hatchery fry and managing fry ponds for increased zooplankton densities should increase fry growth during the nursery phase of culture.

show abstract

Growth, Body Composition, and Survival of Channel Catfish,Ictalurus punctatusFry Fed Hatchery Diets Supplemented with Krill Meal

Cited by 5 publications

References 51 publications

Development, nutrition, and rearing practices of relevant catfish species (Siluriformes) at early stages

Development, nutrition, and rearing practices of relevant catfish species (Siluriformes) at early stages

Influence of Krill Meal on the Performance of Post-Smolt Atlantic Salmon That Are Fed Plant-Based and Animal-Based Fishmeal and Fish Oil-Free Diets

Evaluation of Zooplankton in Hatchery Diets for Channel Catfish Fry

Contact Info

Product

Resources

About