Effects of seawater potassium concentration on the dietary potassium requirement of Litopenaeus vannamei

Zhu, Cheng; Dong, Shuanglin; Wang, Fang; Zhang, Hanhua

doi:10.1016/j.aquaculture.2006.03.038

Cited by 18 publications

(13 citation statements)

References 14 publications

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“…Additionally, the supplementation of K + and Mg 2+ in feeds at levels above normal dietary requirements did not appear to benefit L. vannamei reared in low salinity waters where the ionic composition was considered stressful [50]. Several studies have indicated that addition of K + or chelated K + to feeds results in a minor improvement in the weight gain of shrimp in the laboratory [8,48], but these results have not been reproduced at the farm level. Much of the research on shrimp implicates the specific ratio of Na:K in the rearing medium as being one of the most important factors affecting survival and growth, apparently due to the profound effect that the Na:K ratio as well as the osmolality of the culture medium has on the activity of Na + -K + -ATPase, see [7].…”

Section: Introductionmentioning

confidence: 93%

“…However, the benefit of feeding K + to shrimp also appears equivocal as some authors have shown that shrimp Litopenaeus vannamei reared in artificial seawater, where the [K + ] of water and feeds were varied, did not gain any substantial benefit from K + fortified feed [8]. Additionally, the supplementation of K + and Mg 2+ in feeds at levels above normal dietary requirements did not appear to benefit L. vannamei reared in low salinity waters where the ionic composition was considered stressful [50].…”

Section: Introductionmentioning

confidence: 99%

“…In some areas such as the Murray-Darling Basin (MDB), this problem is ameliorated by large interception schemes which pump saline groundwater from subterranean aquifers into evaporation basins [2]. The potential use of interception schemes for mariculture is considerable [1,[4][5][6][7][8], but in many cases this use is limited by sub-optimal ionic composition [2,9]. The ionic composition of groundwater following evaporation can also vary considerably depending on local geology, climate, and surface management [10].…”

Section: Introductionmentioning

confidence: 99%

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Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

Booth¹,

Fielder²

2016

Fishes

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This study was done to determine if fortification of a commercial aquafeed with KCl could improve the survival of juvenile Australian snapper Pagrus auratus reared in K + deficient saline groundwater (KDSGW; <5 mg K + L −1 ). Experiment 1 (Exp. 1) tested whether feeding an aquafeed fortified with zero, 25, or 50 g KCl kg −1 for 6 days affected feed intake and survival of fish transferred immediately from estuarine water to KDSGW of the equivalent salinity (20 g·L −1 ). Experiment 2 (Exp. 2) investigated whether an aquafeed fortified with zero, 10, or 25 g KCl kg −1 affected survival, feed intake, and growth rate (SGR) of snapper reared in KDSGW fortified to have 40% or 100% the [K + ] of equivalent salinity estuarine water (20 g·L −1 ). The results of Exp. 1 demonstrated there was no benefit of fortifying aquafeed with KCl; fish transferred into KDSGW stopped feeding and developed symptoms akin to tetany. Some individuals also died and others became moribund. Exp. 1 was terminated according to animal care and ethics guidelines. The results of Exp. 2 indicated the amount of KCl added to the aquafeed did not affect survival, feed intake, or food conversion ratio (FCR) of snapper, irrespective of water treatment. However, SGR and FCR was better when fish were reared in normal estuarine water and KDSGW fortified to have 100% the [K + ] of equivalent salinity estuarine water. Our results demonstrated that juvenile snapper were unable to utilize the KCl added to the aquafeed and were probably reliant on sequestering K + ions from the water column in order to maintain functions involving hydromineral homeostasis. Fortification of aquafeeds with KCl does not ameliorate the negative effects of KDSWG on the survival of juvenile snapper.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

Booth¹,

Fielder²

2016

Fishes

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“…Potassium is a minor constituent in freshwater in comparison with the other essential ions required by the fish, and dietary supplementation was found to be essential if certain ions were not present at adequate levels in the water (Liang et al, ; Zhu, Dong, Wang, & Zhang, ). Essentiality of potassium for maintaining normal growth and physiological activities of fish has been clearly demonstrated (Chen et al, ; NRC, ).…”

Section: Introductionmentioning

confidence: 99%

Dietary potassium requirement of fingerling Indian major carp,Labeo rohita(Hamilton), based on growth parameters, gill Na⁺-K⁺ATPase activity, tissue mineralization and antioxidant activities

Musharraf

Khan

2018

Aquacult Nutr

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To quantify the dietary potassium requirement of fingerling Labeo rohita (6.2 ± 0.12 cm; 1.98 ± 0.06 g), seven purified experimental diets (350 g/kg crude protein and 16.72 kJ/g gross energy) with graded levels of potassium (0.32, 1.35, 2.41, 3.46, 6.48, 9.47 and 12.39 g/kg diet) were fed to triplicate groups of fishes at 08:00, 12:00 and 16:00 hr to apparent satiation for 8 weeks. Live weight gain (LWG; 671.46%), specific growth rate (3.65%/day), protein efficiency ratio (2.16), protein gain (PG; 2.41 g/fish) and feed conversion ratio (1.32) were found to be best in fish fed diet containing 3.46 g/kg potassium. Gill Na+‐K+ ATPase activity was also highest in fish fed diet with 3.46 g/kg potassium. Potassium content of whole‐body, vertebrae and scales increased significantly with the increase in dietary potassium level up to 6.48 g/kg. Significant changes were also noted in serum malondialdehyde content, superoxide dismutase, catalase, glutathione peroxidase and alkaline phosphatase activity. Based on the maximum live weight and protein gain observed in the present study, the inclusion of 3.55 g/kg potassium is recommended for developing potassium‐balanced commercial feeds for intensive culture of fingerling L. rohita.

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“…The researchers reported that weight gain was significantly higher in fish receiving diets supplemented with 0.2, 0.3 and 0.4% potassium than in fish fed a diet supplemented with 1.0% potassium. Zhu et al [47] examined the effects of dietary potassium concentrations (1.09, 1.53, 2.49 and 3.46%) on juvenile shrimp (Litopenaeus vannamei). After an 8 week period, the researchers reported that the dietary potassium concentrations had no significant effects on survival, molting, shrimp body potassium content, final body weights and feed consumption.…”

Section: Phosphorusmentioning

confidence: 99%

The Nutritive Value of Wastewater Grown Barley and its Utilization in Fish Feed

Snow¹,

Ghaly²

2007

American J. of Agricultural and Biological Sciences

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Abstract:The feasibility of using wastewater grown barley plants as a component of fish feed was evaluated. The barley plants were grown in a hydroponics system on wastewater from a recirculating aquaculture facility. The effects of wastewater application rate on plant growth and pollution potential reduction were investigated. At the end of the experiment, the average crop heights and yields were 31.0 and 36.0 cm and 59 and 83 t ha -1 at wastewater application rates of 690 and 1380 mL compartment -1 day -1 , respectively. The hydroponics system reduced the TS, COD, NH 4 + -N, NO 2 --N, NO 3 --N and PO 4 -3 -P of the aquaculture wastewater by 51. 5-52.9, 72.3-72.3, 81.8-82.3, 97.9-98.2, 78.9-79.7 and 84.7-86.3%, respectively. The aquaculture wastewater grown barley met the energy, fat, Ca, Mg, P, Na, S and Mn dietary requirements of aquatic animals. It exceeded the carbohydrate, crude fiber, Cl, K, Cu, Fe, Se and Zn dietary requirements of fish and shellfish. It did not contain sufficient amounts of protein. The aquaculture wastewater grown barley could potential be used as a component in fish feed, but will require supplementation with a high protein source that contains low concentrations of carbohydrate, crude fiber, Cl, K, Cu, Fe, Se and Zn. Common protein sources that could be used for supplementation included fishmeal, bone meal and blood meal.

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Effects of seawater potassium concentration on the dietary potassium requirement of Litopenaeus vannamei

Cited by 18 publications

References 14 publications

Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

Dietary potassium requirement of fingerling Indian major carp,Labeo rohita(Hamilton), based on growth parameters, gill Na⁺-K⁺ATPase activity, tissue mineralization and antioxidant activities

The Nutritive Value of Wastewater Grown Barley and its Utilization in Fish Feed

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Effects of seawater potassium concentration on the dietary potassium requirement of Litopenaeus vannamei

Cited by 18 publications

References 14 publications

Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

Fortification of an Aquafeed with Potassium Chloride Does Not Improve Survival of Juvenile Australian Snapper Pagrus auratus Reared in Potassium Deficient Saline Groundwater

Dietary potassium requirement of fingerling Indian major carp,Labeo rohita(Hamilton), based on growth parameters, gill Na+-K+ATPase activity, tissue mineralization and antioxidant activities

The Nutritive Value of Wastewater Grown Barley and its Utilization in Fish Feed

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Product

Resources

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Dietary potassium requirement of fingerling Indian major carp,Labeo rohita(Hamilton), based on growth parameters, gill Na⁺-K⁺ATPase activity, tissue mineralization and antioxidant activities