Feeding and fish husbandry

Davis, D. Allen; Hardy, Ronald W.

doi:10.1016/b978-0-12-819587-1.00015-x

Cited by 6 publications

(5 citation statements)

References 70 publications

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“…Раціональне використання поживних речовин комбікормів дозволяє отримати якісну товарну продукцію у короткі терміни. Гематологічні та біохімічні показники крові мають важливе значення для оцінки якості годівлі (Rudenko & Vishchur, 2015, 2017Rudenko et al, 2019;Davis & Hardy, 2022).…”

Section: вступunclassified

Hematological indicators of the blood of males and females of the Ukrainian scaled carp breed

et al. 2023

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The research results on hematological indicators of males and females of the Ukrainian scaly breed of carp grown in the conditions of a fish farm in the Dnipropetrovsk region are given. In Ukraine, carp cultivation is becoming an increasingly popular method of commercial fish production. At the same time, the hydrochemical and temperature regimes of the reservoir have important practical significance for the average growth and development of fish since the intensity of respiration, metabolic processes, fish nutrition, motor activity, and resistance to various diseases depend on the chemical composition and temperature of the water. The process of formation of the hydrochemical composition of pond water occurs against the background of climatic changes. Therefore, control of temperature conditions and the physiological state of fish during carp cultivation is an important measure that ensures rational consumption of feed and high growth rates and, in the future, allows to plan of optimal cultivation technology. Therefore, the work aimed to investigate the hematological indicators of blood in males and females of the Ukrainian scaly breed of carp to control their physiological state in the conditions of the hydrochemical and temperature regime of the reservoir of the fish farm. It was established that the main hydrochemical parameters corresponded to the technological standards adopted in fish farming to cultivate carp fish. The hematological parameters of the blood of male and female carp were within the physiological norm. The determined blood composition is natural and characterizes changes in the body of fish according to the season, which reflects adaptation processes in the conditions of seasonal fluctuations in water temperature. Correlative relationships between carp blood's hematological parameters and their keeping temperature conditions were revealed. The pH of the medium (r = 0.28–0.34) has the most significant effect on hematological indicators of carp blood. A positive correlative relationship was established between water temperature and the level of hemoglobin, a color indicator, and the number of erythrocytes and leukocytes in the blood of fish, which was in the range of r = 0.21–0.26. There was a negative relationship between the water temperature indicator and the content of segmented nuclear neutrophils (r = 0.24). The variance analysis of the one-factor complex revealed a significant and most highly probable influence of the conditions of keeping carp on the hemoglobin content, the number of erythrocytes, leukocytes, and the color index of the carp's blood. The share of influence was from 56.14 to 76.90 %. The amplitude of water temperature is essential for favorable conditions for hydrophones and the formation of a natural feed base. In addition, the environment's temperature affects the speed of biological processes in fish. Therefore, the organization of carp feeding, considering scientifically based norms depending on the protein content in compound feed, water temperature, fish weight, and density of its landing, will contribute to ensuring high fish productivity and rational use of feed.

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Section: вступunclassified

Hematological indicators of the blood of males and females of the Ukrainian scaled carp breed

et al. 2023

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“…The challenges are not regarding adequate knowledge of the nutritional requirements of finfish, which has been undergoing development for some time (Masumoto, 2002;Gothreaux, 2008;Tesser et al, 2014;Ebeneezar et al, 2019Ebeneezar et al, , 2020Hu et al, 2019;Li et al, 2021); instead, the issue is balancing the feed cost and the market price of the fish produced. Several strategies can be applied, for example the replacement of high-value ingredients, such as fish meal, with low-cost ingredients or by-products (Aoki et al, 2000;Pham et al, 2021) and by the enhancement of feed utilization, minimizing feed loss either by improving feed stability or palatability and improving feeding efficiency (Davis and Hardy, 2022). Furthermore, environmental issues have been important drivers for the development of feeds using substitutes for fish meal and reducing nutrient leaching, as well as unwanted chemical residues from feed.…”

Section: Way Forwardmentioning

confidence: 99%

Current status of carangid aquaculture and way forward

2023

ANRES

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Importance of the work:Interest in marine fin-fish aquaculture has grown in recent decades in response to the rising demand for seafood. Objectives: To provide information and knowledge regarding aquaculture of carangid fishes and synthesize common features, followed by recommendations for development of aquaculture. Materials & Methods:The main literature sources used in this review were from SCOPUS and Google Scholar. Production data were from the Food and Agriculture Organization of the United Nations. All information and data gathered were analyzed and synthesized. Results: Of the 148 carangid fish species, 13 contribute a substantial proportion of global aquaculture production. The two most valuable species are pompano (Trachinotus ovatus), mainly produced by China and Japanese amberjack or yellowtail (Seriola quinqueradiata), mainly produced by Japan. This review provided an overview of aquacultural practices for each species and revealed that the following characteristics are common to carangid aquaculture: culture was first established using wild fingerlings; the success of hatchery production of fingerlings requires lengthy rearing of broodstock; availability of commercial artificial feed is another key success factor; diseases and parasites can be devastating and very difficult to control; and market constraints can have major adverse impacts. Main finding: The following recommendations were made: 1) development of fry production technology is a priority; 2) stocks should be genetically improved to cope with diseases and parasites; 3) cost-effective and environmental-friendly artificial diets should be developed; 4) cost-effective, land-based recirculating aquaculture systems should replace sea-cage and pen culture; and 5) new species, such as bluefin trevally, should be developed for aquaculture to diversify production.

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“…Feed feeding is one of the most important factors affecting the e ciency and cost of aquaculture. Appropriate feeding amount can not only promote the better growth and development of cultured animals, but also reduce the culture cost and the impact of residual feed on the aquaculture environment (Davis and Ronald 2022). At present, the most widely-applied feeding methods in aquaculture mainly include arti cial feeding and mechanized feeding (Føre et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Application of a web-based multi-factor intelligent precision feeding system for fish

Liu

Zhang

et al. 2023

Preprint

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Precise feeding is an effective guarantee to improve the welfare of aquatic animals, increase culture efficiency and reduce environmental pollution, whereas internet of things (IoT) technology is an important means to promote the development of informatization and intelligence of aquaculture. In order to improve the precision, informatization and intelligence of fish feeding management, this paper proposed a multi-factor feeding system based on IoT technology, which integrates feeding management model, water quality monitoring system, fish feeding activity sensor, automatic feeding machine and software platform. Through the step-by-step regulation of general control + fine adjustment + precision adjustment to adjust the feeding amount, feeding speed and feeding duration of the automatic feeding machine, the system can not only achieve the precise and intelligent control of the feeding operation, but also realize the remote centralized management of cultured ponds or tanks. Through the comparison between the intelligent feeding system and the manual feeding system, the results showed that the use of the system not only improved the growth of fish, but also reduced the feed consumption and discharge of nitrogen and phosphorus wastes. The successful application of the feeding system confirms the effectiveness, convenience, and provides data and technical support for future modern and sustainable development of aquaculture.

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Feeding and fish husbandry

Cited by 6 publications

References 70 publications

Hematological indicators of the blood of males and females of the Ukrainian scaled carp breed

Hematological indicators of the blood of males and females of the Ukrainian scaled carp breed

Current status of carangid aquaculture and way forward

Application of a web-based multi-factor intelligent precision feeding system for fish

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