Morphofunctional assessment of domesticated and aquacultured beluga females

Akhmedzhanova, Aliya; Ponomarev, S.V.; Fedorovykh, Yulia Viktorovna; Levina, Olga Aleksandrovna; Dutikov, Evgeniy; Vyatchin, Vladislav Vladimirovich

doi:10.1051/e3sconf/202127303001

Cited by 3 publications

(2 citation statements)

References 13 publications

(13 reference statements)

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“…Another advantage of the cage method is the possibility of strict control over the process of growing fish (physico-chemical parameters of the aquatic environment, feed consumption, growth rate and survival). Unlike pond and basin methods, when growing sturgeon in cages, forced water exchange and energy consumption for pumping water are not required [1,2].…”

Section: Introductionmentioning

confidence: 99%

Joint cultivation of sturgeon and tilapia in cages on small rivers (Krasnodar territory)

Abramchuk,

Moskul,

Pashinova

2024

BIO Web Conf.

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One of the ways to increase sturgeon aquaculture is the cage cultivation of commercial fish on small rivers of the Krasnodar Territory. The projected cage farm is intended for the cultivation of sturgeon and tilapia in aquaculture. The production program assumes the annual production of up to 6.25 tons of commercial fish weighing 1.2—2 kg of sterlet and at least 160 kg of tilapia, with an individual weight of 250—280 g, from each involved cage. The paper describes the area of the cages, the composition of the cage farm and the technology of growing sturgeon (sterlet) and tilapia. Fish farming calculations (stocking, fish growth, feed, yield of commercial fish) are given. The possibility of placing a garden farm on the Kalaly River of the Novopokrovsky district of the Krasnodar Territory is justified and calculated.

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Section: Introductionmentioning

confidence: 99%

Joint cultivation of sturgeon and tilapia in cages on small rivers (Krasnodar territory)

Abramchuk,

Moskul,

Pashinova

2024

BIO Web Conf.

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“…Вторая половина XX в. отличается мощнейшим влиянием деятельности человека на водные экосистемы, в том числе и на экосистему Каспийского бассейна. Единственной рекой, где сохранились нерестовые гряды, является р. Урал [1][2][3].…”

Section: Introductionunclassified

Investigation of morphophysiological parameters of beluga replacement stock cultivated in artificial environmental conditions

Akhmedzhanova

Ponomarev

Fedorovykh

et al. 2022

Vestnik of Astrakhan State Technical University. Series: Fishing Industry

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The sturgeon fish populations in the main reservoirs of the country are in a crisis. Efficiency of natural reproduction of these fish species is extremely low and currently the replenishment of populations is mainly achieved due to artificial breeding. Beluga, one of the sturgeon fish species living in the Caspian basin, is classified as endangered, being in particularly difficult circumstances. Over the past hundred years its abundance has undergone fluctuations due to the natural and anthropogenic factors. Due to the sharp reduction in the volume of artificial reproduction by fish hatcheries of the Lower Volga and the threat of species extinction there was carried out the research of the quality of beluga juveniles of different ages cultivated in artificial environment. Morphophysiological parameters of beluga juveniles of different ages cultivated in cages and ponds are investigated. The concentration of hemoglobin in the studied groups ranged from 56.3 to 70.3 mg/l (the data were within the reference values), which indicates an increased level of metabolism. Low values of the erythrocyte sedimentation rate in different growing conditions (from 4.5 – 6.4 mm/h) were noted, which indicates the absence of inflammatory or pathological processes in the body of hydrobionts. Concentration of total whey protein in the studied groups was also within the physiological norm. As a result of the studies, it can be concluded that such parameters as total protein, cholesterol, glucose and β-lipoproteins are not affected by age, but mainly depend on fish nutrition. The obtained analysis of sturgeon morphophysiological indicators (grown in different conditions) complements the missing information for monitoring the physiological state of these valuable representatives of aquaculture, adjusting biological standards of cultivation and the technological processes in the ponds and industrial complexes.

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Assessment of morphophysiological indicators of sturgeon breeders

Akhmedzhanova¹,

Ponomarev²,

Fedorovykh³

et al. 2022

Fish Breeding and Fisheries

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Studies were conducted to assess the morphophysiological indicators of sturgeon breeders in the conditions of the cage complex. It was found that a common feature for first–time mature beluga females raised in artificial conditions are relatively low values of eggs’ fertilization — 65,3±1,3%, with the number of eggs in 1 g — 46,0 pieces, in contrast to domesticated females where the indicators of eggs’ fertilization were higher by 27,1%. The yield of eggs from the body weight of domesticated beluga females was 2 times higher, unlike females raised on the principle of “from eggs to eggs”. It was noted that for beluga females raised in artificial conditions, the hemoglobin concentration values were 15,7% higher, in contrast to the indicators obtained from domesticated females. It was found that for beluga females raised in artificial conditions, the total protein indicators were 1,4 times higher. For domesticated Russian sturgeon females, there is a tendency for higher indicators of working fertility, for which significant differences were obtained (p < 0.05). In Russian sturgeon females raised in industrial conditions, hemoglobin concentration indicators were higher by 14,5%, unlike adapted females, as a result, a similar trend is observed as with beluga females, it was found that for more productive fish, hemoglobin is lower, but within the reference values. The cholesterol level in the blood of domesticated and industrially raised Russian sturgeon females was slightly higher than the physiological norm. According to the statistical processing of the data obtained, the best indicators of total protein and glucose were noted for females raised in artificial conditions, however, these indicators of domesticated females were not critically low and were within the reference values.

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Morphofunctional assessment of domesticated and aquacultured beluga females

Cited by 3 publications

References 13 publications

Joint cultivation of sturgeon and tilapia in cages on small rivers (Krasnodar territory)

Joint cultivation of sturgeon and tilapia in cages on small rivers (Krasnodar territory)

Investigation of morphophysiological parameters of beluga replacement stock cultivated in artificial environmental conditions

Assessment of morphophysiological indicators of sturgeon breeders

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