Constraining Factors in Hungarian Carp Farming: An Econometric Perspective

Gyalog, Gergő; Oláh, Judit; Békefi, Emese; Lukácsik, Mónika Bojtárné; Popp, József

doi:10.3390/su9112111

Cited by 15 publications

(4 citation statements)

References 24 publications

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“…It is known that in modern market conditions to obtain an economic result, the factor of fish quality is more important than its quantity (Martseniuk, 2017); -commercial fish from intensively exploited fish ponds are unlikely to fall under the category of organic products because of their cultivation. They use intensive feeding with artificial feed, lime is added to ponds, mineral fertilizers containing some toxic elements that accumulate in fish, use many medicinal drugs for disease prevention (Gyalog et al, 2017).…”

Section: Intensive Technologymentioning

confidence: 99%

Technologies of carp growing and their features

et al. 2021

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Carp is one of the few fish farms for which a wide range of technologies has been developed: from extensive, with minimal human intervention in the formation of fish productivity of the reservoir, to intensive, with the most controlled production conditions. Carp has many biological features, enhanced by centuries of breeding work, making this fish extremely “technological”, able to more or less fully realize the genetically determined bioproductive properties of different breeding technologies. Technologies for growing commercial carp according to the level of intensification of the production process can be divided into extensive (grazing), semi-intensive, intensive, and continuous, as a distinct type of intensive technology for growing carp in ponds and pools. Extensive technology assumes that the fish will feed exclusively on natural food, zooplankton, and bottom fauna. In this case, the cost of growing carp will be the lowest; the fish will be called “ecological”, but the growth of individuals will be insignificant. Semi-intensive technology assumes that carp feed on natural feeds, and their energy needs are met by providing carbohydrate additives to feed. Intensive technology believes that carp feeding with compound feeds with high protein content is used, which allows achieving productivity of 3–20 tons/ha. This system requires the highest costs, although it gives the highest performance. The pond must provide additional aeration and water flow to prevent contamination of the reservoir and the development of fish diseases. The main disadvantage of popular carp growing technologies is their staging. All operations are carried out strictly one after another in specialized ponds. Moreover, each stage ends with the descent of the tanks, and the fish are transplanted several times from one to another (from spawning to juvenile, from them to nursery). During this, the carp is injured, which negatively affects its productivity and inevitably leads to waste. To remedy this, fish farming is now using continuous rearing technology. The choice of technology for growing carp is a responsible task on which the profitability of fisheries depends.

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Section: Intensive Technologymentioning

confidence: 99%

Technologies of carp growing and their features

et al. 2021

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“…If this is a line segment, we will move along it to another peak of the polyhedron. There the value of the purpose function is higher and we can continue repeating the previous procedure until we find the optimum solution or until we find out that the task is not bound [23]. The biggest disadvantage of the simplex method is that its time demands that are exponentially dependent on the number of inputs or on the size of an input.…”

Section: Linear Programmingmentioning

confidence: 99%

The Application of Mathematical Modeling to Predict the Financial Health of Bussinesses

Klieštik¹

2018

Proceedings of the Third International Conference on Economic and Business Management (FEBM 2018)

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The prediction of the future state of the enterprises has an irreplaceable role in corporate management; this is often the difference between the existence of a business and its future termination. Therefore, it is appropriate for businesses to know sufficiently far ahead of time about possible business failures. For more than eighty years of research several dozen methods to predict the financial health of businesses have been developed. The first part of this paper focuses on their comprehensive classification. Apart from statistical methods aim of the paper is to define, describe and analyze the use of mathematical methods to predict financial health; to explore their advantages and disadvantages.

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“…Khan et al (2016) stated that the common carp was introduced into many countries around the world, in addition to Asia, Europe, Australia and North America. It was revealed that common carp farming had a key role in the Blue Revolution at a global level (Gyalog et al, 2017). Common carp in 2018 occupied the fourth place of the total world production which consisted 7.7%, after grass carp Ctenopharyngodon idella that consisted 10.5% of world production, silver carp Hypophthalmichthys molitrix (8.8%) and Nile tilapia Oreochromis niloticus which consisted 8.3% (FAO, 2020).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Growth of Common Carp, Cyprinus carpio Cultivated in and outside Cages in Earthen Ponds in Basrah, Iraq

Al-Dubakel¹

2022

Biol. Appl. Environ. Res.

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The current experiment was conducted in one earthen pond (2500 m2) at Agricultural Research Station of the Aquaculture Unit, College of Agriculture at the University of Basrah, Al-Hartha District from 17 February to 10 June 2021. This experiment aims to investigate growth differences between common carp cultivated in small cages (2 x 3 x 2 meter) located inside earthen pond and those were released in the same pond. Effects of fish stocking density inside small cages were also investigated. Four stocking densities were used [100 fishes in cages 1 and 2 (T1); 150 fishes in cages 3 and 4 (T2); 200 fishes in cages 5 and 6 (T3); 250 fishes in cages 7 and 8 (T4); while 1600 fishes were stocked in the earthen pond (T5)]. Fishes were fed daily 3% of fish weight on commercial sinking pellets manufactured by Agricultural Consultant Office of the College of Agriculture. Total length and weight of fishes were measured at the beginning and at the end of the experiment, while subsamples of fishes were weighed periodically and daily feed changed after each weighing. Daily feed was divided into three meals, the first one was given early at the morning, the second one at mid-day and the third one at afternoon. Results of current experiment revealed best growth criteria in T1 where average final weight was 750.5 g, average weight increment was 454.6 g, average daily growth rate was 4.33 g/day and average feed conversion rate was 2.77. Some of these criteria showed significant differences (P≤0.05) between T1 and other treatments, while feeding conversion rate (3.33) was achieved by fishes reared outside cages in the pond. As a conclusion, it can be pointed out that growth criteria of fishes reared inside cages were better than fishes reared outside cages and fish stocking densities were not affecting growth criteria of fishes reared inside cages.

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Constraining Factors in Hungarian Carp Farming: An Econometric Perspective

Cited by 15 publications

References 24 publications

Technologies of carp growing and their features

Technologies of carp growing and their features

The Application of Mathematical Modeling to Predict the Financial Health of Bussinesses

Comparison of Growth of Common Carp, Cyprinus carpio Cultivated in and outside Cages in Earthen Ponds in Basrah, Iraq

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