Relative Production Performance and Cost of Food Fish Production from Fingerlings of Channel-Blue F1 Hybrids, Ictalurus punctatus-Ictalurus furcatus, and NWAC-103 Channel Catfish, I. punctatus

Kumar, Ganesh; Engle, Carole R.

doi:10.1111/j.1749-7345.2010.00394.x

Cited by 24 publications

(24 citation statements)

References 19 publications

(48 reference statements)

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“…Growth, net yield, and survival of hybrid catfish fed daily to satiation were within the ranges reported in recent studies Dunham et al 2008;Jiang et al 2008;Green and Rawles 2010;Kumar and Engle 2010). Feed conversion ratio (1.97) of fish fed daily to satiation in the present study is higher than the FCR range of 1.49-1.85 reported in the aforementioned studies.…”

Section: Resultssupporting

confidence: 73%

Effects of Feeding Rate and Frequency on Production Characteristics of Pond‐Raised Hybrid Catfish

Robinson

Oberle

et al. 2012

N American J Aquac

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The present study examined the effects of various daily feeding rates and feeding every other day on the growth, net yield, feed conversion ratio, and size distribution of hybrid catfish (female channel catfish Ictalurus punctatus × male blue catfish I. furcatus) in production ponds. Hybrid catfish fingerlings (average size, 45 g) were stocked into 0.04‐ha ponds at a density of 14,826 fish/ha. Initially, all fish were fed to apparent satiation until feed consumption reached predetermined levels. Thereafter, the daily feeding rates for fish in the restricted feeding group were no more than 112, 135, or 168 kg·ha−1·d−1. Fish in the every‐other‐day feeding group were fed to apparent satiation daily until they reached about 0.23 kg and every other day to satiation thereafter. The results from the present study show that feeding every other day significantly reduces the weight gain and net yield of hybrid catfish but improves the feed conversion ratio. Partial budget analysis indicates that feeding hybrid catfish every other day is not economical at recent feed and fish prices. There were no significant differences in net yield, weight gain, and percentage of market‐size fish among fish fed daily at various rates. Fish fed daily at no more than 112 and 135 kg/ha had significantly lower feed conversion ratios than fish fed daily to satiation. Simple regression analysis indicates that the weight gain, net yield, feed conversion ratio, and percentage of market‐size fish increased linearly as the total amount of feed fed increased in fish fed daily. The results also show that the feed restriction used in the present study does not affect the size distribution of hybrid catfish.

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Section: Resultssupporting

confidence: 73%

Effects of Feeding Rate and Frequency on Production Characteristics of Pond‐Raised Hybrid Catfish

Robinson

Oberle

et al. 2012

N American J Aquac

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“…Catfish producers adopted multiple‐batch production practices even though single‐batch production was more profitable due to reduction in risks associated with cash flow (Engle and Pounds ) and marketing (Engle et al ) when fish were grown in multiple‐batch culture. Increased financial risk resulting from a higher fingerling price was attributed as the main deterrent for the initial adoption of hybrid catfish in traditional catfish farming systems (Kumar and Engle , ).…”

Section: Characteristics Of the Technologymentioning

confidence: 99%

Factors Driving Aquaculture Technology Adoption

Kumar

Engle²,

Tucker

2018

J World Aquaculture Soc

Self Cite

185

103

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Technology adoption has played a key role in the global development and increase in agricultural productivity. However, the decision to adopt a new technology on farms is complex. While the factors that drive the adoption of new technologies have been well studied in agriculture, less attention has been paid to drivers of technology adoption in aquaculture. Aquacultural technologies have developed and advanced rapidly in recent decades, but not all technologies have been adopted readily by farmers. This review paper summarizes some of the critical factors that influence aquaculture technology adoption decisions such as: (1) method of information transfer, (2) characteristics of the technology, (3) farm characteristics, (4) economic factors, and (5) sociodemographic and institutional factors. Fish farmers have tended to adopt technologies that are perceived to be more advantageous than others in terms of productivity, cost efficiency, and ease of management. Price of aquaculture products and profit expectations from business ventures were key economic factors influencing adoption decisions. Given the wide array of species, production practices, and global nature of aquaculture, the intensity and the extent of adoption of technologies depend on the nature of the industry in which they are adopted and their economic, social, political, and regulatory environments.

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“…Raising hybrid catfish in intensive environments, however, involves greater financial risk, as it incurs significantly higher total costs, primarily from increased feeding and fingerling costs (Kumar and Engle , ). Additionally, the smaller head and deeper body of hybrid catfish result in many intermediate‐sized fish being “gilled,” or hanging up in live‐car (sock) graders.…”

mentioning

confidence: 99%

Performance of Channel Catfish and Hybrid Catfish in Single‐Batch, Intensively Aerated Ponds

Kumar

Wise

et al. 2019

N American J Aquac

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A pond production trial was conducted to evaluate the economics of raising Channel Catfish Ictalurus punctatus in intensively aerated ponds operated under the single‐batch cropping system. Channel Catfish fingerlings averaging 0.09 lb were stocked at 6,000, 8,000, 10,000, and 12,000 fish/acre with six replicate ponds (1 acre) per treatment. A treatment of hybrid catfish (♀ Channel Catfish × ♂ Blue Catfish I. furcatus) fingerlings stocked into five replicate ponds at 12,000 fish/acre was concurrently evaluated to compare the economic performance of hybrids and that of Channel Catfish. All ponds were provided with a fixed‐paddlewheel aerator (10 hp/acre) and were fed once daily to apparent satiation for 206 d. For Channel Catfish, the gross yield ranged from 6,562 to 9,039 lb/acre, showing nominally linear trends of increasing yield with stocking density. However, the same trend was not seen in the relationship between costs and stocking density: the highest breakeven price (US$1.07/lb) was associated with the lowest density treatment (6,000 fish/acre), and the least cost ($0.96/lb) was associated with the intermediate density of 8,000 fish/acre. Average annual net cash flows from all Channel Catfish treatments were insufficient to make the investment in intensive aeration profitable in the long run (10 years). The hybrid catfish treatment (12,000 fish/acre) outperformed all Channel Catfish treatments in terms of yield (17,542 lb/acre), which offset some of the fixed costs associated with intensively aerated ponds and resulted in a lower cost of production ($0.85/lb) and better long‐term returns (17%). This study indicated that Channel Catfish do not perform well—either biologically or economically—at densities greater than 8,000 fish/acre in single‐batch, intensively aerated ponds. The study reflects current industry trends, where integrated farms (farms with their own processing plants) with yield‐maximizing business objectives prefer raising hybrid catfish in single‐batch systems, while nonintegrated farms prefer raising Channel Catfish in multiple‐batch systems.

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Relative Production Performance and Cost of Food Fish Production from Fingerlings of Channel-Blue F1 Hybrids, Ictalurus punctatus-Ictalurus furcatus, and NWAC-103 Channel Catfish, I. punctatus

Cited by 24 publications

References 19 publications

Effects of Feeding Rate and Frequency on Production Characteristics of Pond‐Raised Hybrid Catfish

Effects of Feeding Rate and Frequency on Production Characteristics of Pond‐Raised Hybrid Catfish

Factors Driving Aquaculture Technology Adoption

Performance of Channel Catfish and Hybrid Catfish in Single‐Batch, Intensively Aerated Ponds

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