Impact of Different Salinity Levels on Growing Performance, Food Conversion and Meat Quality of Red Tilapia (Oreochromis sp.) Reared in Seawater Tanks

Malik, Abdul; Abbas, Ghulam; Ghaffar, Abdul; Ferrando, Sara; Gallus, Lorenzo

doi:10.17582/journal.pjz/2018.50.2.409.415

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Minerals are equally crucial nutrient components that are required either in large quantities (macrominerals) or traces (microminerals), for regular function, development and upkeep of body tissues (Byrd‐Bredbenner, Moe, Berning, & Kelley, 2016). Data, as revealed by this study, are quite different from what Malik, Abbas, Ghaffar, Ferrando, and Gallus (2018) recorded when Red Tilapia was subjected to different salinity levels (15–40)—as ash content in meat samples did not increase with the increase in salinity, and there was no significant difference between treatments. Obviously, these are entirely different classes of aquatic organisms, thus, a highly probable difference in their physiology in relation to salt regulation.…”

Section: Discussioncontrasting

confidence: 99%

Sub‐low salinity impact on survival, growth and meat quality of the Pacific abalone ( Haliotis discus hannai ) and hybrids

et al. 2020

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In recent years, suboptimal environmental conditions have been frequently reported to negatively impact on aquaculture organisms. Salinity is an important environmental factor, and its fluctuation will affect survival, growth and, potentially, the meat quality of the organisms with narrow salt tolerance cultured in coastal and inner bay. The aim of the study was to ascertain and report the influence of sub‐low salinity (28 and 30) on the production traits and nutrient composition of the Pacific abalone Haliotis discus hannai (DD), and two of its hybrids (DF and SD). In view of this, 360 abalones were subjected to four salinity levels (28, 30, 32 and 34) for ninety days. The data showed that the weight gain and the specific growth rates in wet weight between the groups followed the trend of DF > SD > DD. DF recorded the highest meat yield, which was significantly higher than SD and DD (p < .05). The sub‐low salinities tested did not influence moisture content, crude protein, total lipid and total carbohydrate (p > .05). Whilst lipid levels were fairly higher in SD and DF than in DD, at sub‐low salinities, the opposite was true for carbohydrate content. Total minerals (ash), however, were influenced by salinity (p < .05). Individuals reared at 28 significantly differed from those of the other three treatments, but there was no significant difference between the groups (p > .05). Further analysis showed sodium and potassium as the predominant minerals—with a higher concentration of sodium at higher salinities, though no significant difference was found between individuals treated at 30, 32 and 34. Zinc was the only mineral not affected by salinity (p > .05), and the accumulation of discrete minerals by the species significantly differed from one mineral to the other and proved to be species‐specific. Notwithstanding, SD demonstrated superior content of most essential minerals over DF and DD. The results in this paper infer that the Pacific abalone and its hybrids could maintain good meat quality and survival under a range of 28–34 of salinity, promoting the growth of cultured abalone under the sub‐low salinity of 28.

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Section: Discussioncontrasting

confidence: 99%

Sub‐low salinity impact on survival, growth and meat quality of the Pacific abalone ( Haliotis discus hannai ) and hybrids

et al. 2020

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“…Dissolve oxygen (DO) of the tanks water was noticed by the help of portable test kit (Merck KGaA, 64271, Germany). The water pH was calculated by pH meter (EzDO 6011, Taiwan) and ammonia of the water was monitored with portable test kits (Merck KGaA, 64271, Germany) and salinity was observed by hand-held refractometer (Atago, S/Mill-E, 0.100‰, made in Japan) on daily basis (Daudpota et al, 2016;Malik et al, 2018).…”

Section: Measurement and Analysismentioning

confidence: 99%

Assessment of Optimum Salinity Level for Maximum Growth and Survival of Nile Tilapia, Oreochromis niloticus (Linnaeus 1758)

Malik¹,

Abbas²,

Ghaffar³

et al. 2018

PJZ

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Assessment of optimum salinity level (10‰, 15‰, 20‰, 25‰ and 30‰) for growth performance, food conversion, body composition and survival rate of Nile tilapia, Oreochromis niloticus (mean body weight 4.5±0.5 g) were investigated. Fingerlings were randomly distributed into the glass tanks (60 x 30 x 45 cm each). Ten fish per tank were stocked with two replications. Fish were fed with commercial floating pellet (35% protein) with 3% of total biomass day-1 for 50 days. Results showed that the growth increment reared on 10‰-20‰ salinity were significantly highest in term of weight gain, WG % of initial weight, daily weight gain, specific growth rate, condition factor and survival rate than those reared on 25‰ and 30‰. Feed conversion ratio was found similar in all levels which is not significantly different (P> 0.05). Whole body composition i.e. protein (53.16%-53.26%), moisture (71.16%-71.26%), lipids (2.49%-2.52%), ash (4.16%-4.18%) contents of fish whole body were not significantly (P>0.05) different at varying salinity levels. Mean values of water quality were found acceptable for tilapia i.e. temperature 28.42±0.08°C, dissolved oxygen 7.48±0.06 mg/L, pH 7.64±0.04 and ammonia 0.022±0.004 mg/L. Relationship between log body weight and log total length of the the fish shows that Nile tilapia fingerlings reared from 10‰-20‰ was significantly (P <0.05) higher than 25% and 30% salinity levels. Present study suggests that Nile tilapia can be reared up to 20% salinity to get good growth and higher survival rate.

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“…Because C. managuense is a benthic carnivorous fish with relatively high growth rates, it is a good choice for aquaculture (Gu & Du, 2008). Tilapia, the other widely cultured freshwater cichlid species, has been documented to be able to tolerate high salinity changes and was cultured in brackish water successfully (El‐Leithy et al., 2019; Malik, Abbas, Ghaffar, Ferrando, & Gallus, 2018). Therefore, investigating osmoregulatory ability, salinity tolerance and the optimal ambient salinity of C. managuense may be imperative for a scientific rearing protocol.…”

Section: Introductionmentioning

confidence: 99%

Physiological responses to salinity stress in the Managua Cichlid,Cichlasoma managuense

Chen

Zhong

et al. 2020

Aquac Res

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The present study was designed to examine the physiological responses of juvenile managua cichlid, Cichlasoma managuense under short-term salinity stress, that is transferring C. managuense from freshwater to brackish water of salinity 0 (control group), 3‰, 6‰, 9‰, 12‰ or 15‰ for 48, 96, 144 and 192 hr respectively. The results showed that gill Na + /K +-ATPase (NKA) activity revealed a decreased (48 hr), increased (96 hr) and then slightly decreased (144 hr, 192 hr) response with increasing salinity and the lowest NKA level was consistently detected at 9‰ salinity treatment; gill Ca 2+ /Mg 2+-ATPase (CMA) activities in all salinity treatments were significantly higher than that of the control group (p < .05) before 144 hr; the RNA/ DNA ratio was significantly reduced when exposed to high salinities (≥9‰), suggesting growth inhibition; serum cortisol level gradually decreased at low salinities (up to 6‰) but dramatically increased at high salinities of 12‰ and 15‰; and both serum glucose/lactic acid levels and heat shock protein 90 (HSP90) level in liver/muscle were decreased at the salinity between 9‰ and 6‰ but increased at the salinity between 12‰ and 15‰, which was a U-shape response curve. Taken together, our data suggest that C. managuense can adapt well at salinity up to 0‰-9‰ and high salinity may cause detrimental effects.

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Impact of Different Salinity Levels on Growing Performance, Food Conversion and Meat Quality of Red Tilapia (Oreochromis sp.) Reared in Seawater Tanks

Abstract: Authors' Contribution GA conceived the idea, designed the study and wrote the manuscript. AM did the experimental work. AG prepared the blood slides. SF analysed the data and LG edited the manuscript.

Cited by 5 publications

References 18 publications

Sub‐low salinity impact on survival, growth and meat quality of the Pacific abalone ( Haliotis discus hannai ) and hybrids

Sub‐low salinity impact on survival, growth and meat quality of the Pacific abalone ( Haliotis discus hannai ) and hybrids

Assessment of Optimum Salinity Level for Maximum Growth and Survival of Nile Tilapia, Oreochromis niloticus (Linnaeus 1758)

Physiological responses to salinity stress in the Managua Cichlid,Cichlasoma managuense

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