EFFECT OF Mugil cephalus SIZE AND DENSITY AT INITIAL STOCKING ON GROWTH PERFORMANCE AND SIZE AT HARVEST.

Bakeer, M.; Mostafa, M.; Samra, M. I. El

doi:10.21608/jappmu.2010.86239

Cited by 8 publications

(10 citation statements)

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“…Regarding the depressing effects of high SD on fish growth performance and SR, the results of the present study are in agreement with those obtained by Khattab et al (2004a) and Bakeer et al (2007) for tilapia and EL-Haroun (2007) for catfish. Moreover, Abdelhamid et al (2007b) reported that raising SDs (2, 3 and 4g fish / l) significantly (P ≤ 0.05) decrease the growth performance of O. niloticus.…”

Section: Growth Performance Parameterssupporting

confidence: 93%

Alleviating Adverse Effects of Heat Stress by Using Organic Selenium and Chromium for Local Laying Hens.

Abo-Egla

Kalaba

Tolba

et al. 2014

Journal of Animal and Poultry Production

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Stocking density (SD) is one of the key factors influencing the perceived level of stress in fish. The present study was designed to evaluate the effects of dietary graded levels of a new commercial probiotic Pro-Grow ® and SD on adult Nile tilapia Oreochromis niloticus, concerning rearing water quality, growth performance, feed utilization, and fish carcass composition for 15 weeks. Fish with an average initial body weight (55.75 ± 0.6 g) were distributed into six treatments (three replicates per treatment). Fish were stoked at 40 and 80 fish / m 3 and fed Pro-Grow ® probiotic at three levels (0, 10 and 20 g / kg diet) for each SD. The obtained results revealed that the high SD had negative significant (P ≤ 0.05) effects on rearing water quality (dissolved oxyegen and total nitrogen ammonia, but still within the acceptable ranges for rearing O. niloticus), growth performance, feed utilization and fish carcass composition (ash and crude protein) parameters compared to the low SD. However, addition of dietary Pro-Grow ® significantly improved these adversely effects of high SD on fish, especially at high level 20 g / kg diet followed by 10 g / kg diet compared to the control group. Hence, the significantly interaction between high SD and high level of Pro-Grow ® was detected in most of the above parameters. So, it could be concluded that the high level (20 g / kg diet) of Pro-Grow ® probiotic is useful with high SD (80 fish / m 3) for enhancing the production performance of O. niloticus.

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Section: Growth Performance Parameterssupporting

confidence: 93%

Alleviating Adverse Effects of Heat Stress by Using Organic Selenium and Chromium for Local Laying Hens.

Abo-Egla

Kalaba

Tolba

et al. 2014

Journal of Animal and Poultry Production

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“…Similarly different experiment results on the effect of stocking density conducted on different tilapia fish sizes including fry and juveniles (khattab et al, 2004 andAbdelhamid et al, 2007), sub-adults (Bakeer et al, 2007) and large tilapia (Diana et al, 2004). Furthermore, Ellis et al, (2002) reported that stocking density is a key factor in determining the productivity and profitability of the commercial fish farms were obtained.…”

Section: Resultsmentioning

confidence: 96%

INTENSIVE DIFFERENT STOCKING DENSITIES OF NILE TILAPIA, Oreochromis niloticus AND SILVER CARP, Hypophthalmichthys molitrix UNDER MONO-OR POLYCULTURE SYSTEMS IN FLOATING NET CAGES REARING IN MANZALA LAKE, Egypt

Khalil

Farrag

Shebly

et al. 2015

Journal of Animal and Poultry Production

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This experiment was designed in order to study the effect of intensive rearing of mono-sex Nile tilapia and Silver carp under mono-or polyculture systems at different stocking densities in floating net cages. Fish were male mono-sex Nile tilapia with an average initial body weight (19.30 g) and Silver carp with an average initial body weight (73.6 g). The experimental fish were adapted for one week in floating netcages and then distributed randomly into five experimental cages. The first cage was stocked with Nile tilapia, at a rate of 30 fish / m 3 , while the 2 nd , the 3 rd and 4 th cages were stocked with different densities of Nile tilapia with Silver carp, at a rate of 30 fish / m 3 and the fifth cage was stocked with Silver carp only at a rate of 6 fish / m 3. All fish groups were feed the same artificial pelleted diet (except 5 th group fed natural water food). The diets were contained of 26.58% crude protein and gross energy 410.35 Kcal/100g DM, and offered twice daily (at 8.30 a.m. and 15.00 p.m.). The feeding rate represented 4% of mass body weight during all experimental periods. The main results showed that the best treatment was the monoculture of monosex Nile tilapia (30 fish / m 3), then followed by the polyculture (88% Nile tilapia) and (12% Silver carp) in most of the examined traits as well as in the economic efficiency. The obtained results showed also that the intensive monoculture systems of silver carp had the lowest economic efficiency related to the only natural food in water only. The present obtained results lead to the importance using the balanced pelleted complete diet for feeding tilapia fish especially under intensive cultured (monoculture); as well as, depending of green water for fed Silver carp in intensive monoculture. Also, showed the superiority of stocking densities in polyculture system were 88% and 12% for Nile tilapia and Silver carp, respectively As well as from environmentally point of view, it could be concluded that the controlling on different source of water pollution in Manazala Lake are very important to get high quality and safety fish production.

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“…However, the averages of water temperature were within the range considered for fish growth (Table4).These results were agreement with those obtained by Bakeer et al They reported that ponds water is suitable for all chemical, physical and biological processes. (34)…”

Section: Discussionmentioning

confidence: 99%

Heavy Metals and Chemical Composition of Mullet Fish and Water Quality of Its Farms

Agamy

Gomaa

2012

Journal of High Institute of Public Health

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Background: Fish is a source of high-quality protein, supplying respectively ≈6% and ≈16.4% of the world's and total animal protein requirements. Mullet production is mainly farm-based. Heavy metal accumulation in aquatic organisms is a serious sequel of aquatic system pollution. Objectives: to assess some heavy metal concentration and physiochemical composition of farm fish and water Methods: 60 mullet fish and 18 surface water samples were collected from three fish farms for determination of fish and water Cd, Zn, Cr, Cu and Pb concentrations as well as analysis of fish proximate chemical composition and water physiochemical parameters. Results: Only Pb and Zn exceeded the maximum permissible limit (MPL) in fish samples while Pb and Cd exceeded the MPL in water samples. Pb levels exceeded the MPL of fish (1.5 mg/kg) in 5% of fish samples while its concentration exceeded the MPL of water (0.01mg/l) in 50% and 33.3% of water samples during winter and summer respectively. Zn concentration exceeded the MPL (5 mg/kg) in about 6.5% of fish samples during winter season only. All water samples exceeded the MPL of Cd (0.003 mg/l) during winter only. Chemical analysis of fish revealed that there was no significant difference in protein content of mullet among different farms and between the two seasons. Conclusion: Pb and Zn accumulate in fish edible tissue inconsiderably high concentrations. Pb and Cd pollution should be monitored in fish farming water.

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EFFECT OF Mugil cephalus SIZE AND DENSITY AT INITIAL STOCKING ON GROWTH PERFORMANCE AND SIZE AT HARVEST.

Cited by 8 publications

References 0 publications

Alleviating Adverse Effects of Heat Stress by Using Organic Selenium and Chromium for Local Laying Hens.

Alleviating Adverse Effects of Heat Stress by Using Organic Selenium and Chromium for Local Laying Hens.

INTENSIVE DIFFERENT STOCKING DENSITIES OF NILE TILAPIA, Oreochromis niloticus AND SILVER CARP, Hypophthalmichthys molitrix UNDER MONO-OR POLYCULTURE SYSTEMS IN FLOATING NET CAGES REARING IN MANZALA LAKE, Egypt

Heavy Metals and Chemical Composition of Mullet Fish and Water Quality of Its Farms

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