Growth Performance and Implication of a Thermal-Unit Growth Coefficient of Grass Carp Ctenopharyngodon idella and Silver Carp Hypophthalmichthys Molitrix Larvae Reared in Recirculation System

Al-Hamadany, Qusay Hamid; Al-Dubakel, Adel Y.; Jabir, Amer A.

doi:10.4197/mar.22-2.3

Cited by 3 publications

(3 citation statements)

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“…Many laboratory experiments were conducted in Iraq on grass carp with few field studies such as Al-Seyab (1996), Saleh et al (2008), and Taher (2020a) who studied the effects of fish density on growth and condition factor of grass carp cultivated in earthen ponds. Al-Dubakel et al (2011) studied growth criteria and the implication of grass carp larvae cultivated in a recirculation system. Al-Shkakrchy & Ahemed (2013) investigated the use of duckweed Lemna spp.…”

Section: Introductionmentioning

confidence: 99%

Effects of Water Temperature on Growth Criteria of Fingerlings of Grass Carp, Ctenopharyngodon idella (Valenciennes, 1884)

Taher¹

2022

BAER

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The current experiment was conducted in the Fish Laboratory of Aquaculture Unit, College of Agriculture, University of Basrah from 28th January to 19th April 2021. Growth criteria of grass carp Ctenopharyngodon idella were investigated using four water temperatures (15, 20, 25 and 30 oC). Grass carp fingerlings (4.92 g) were brought from earthen ponds of the Aquaculture Unit in Al-Hartha Station for Agricultural Researches, North Basrah. The results indicated that the highest final weight (7.96 g) was reached by fishes at 15 0C, while the lowest final weight (7.22 g) was at 30 0C. Weight increments for fishes were 3.02, 2.97, 2.76 and 2.22 g for water temperatures of 15, 20, 25 and 30 0C, respectively. Fishes had the highest daily growth rate (0.0425 g/day) at 15 0C and the lowest (0.0312 g/day) at 30 0C. Fishes at 20 0C had the best feed conversion rate of 4.03, while fishes at 30 0C had the worst feed conversion rate of 5.29. It can be concluded that the best growth criteria were obtained from fishes at 15 0C and 20 0C, while the worst was observed at 30 0C.

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Section: Introductionmentioning

confidence: 99%

Effects of Water Temperature on Growth Criteria of Fingerlings of Grass Carp, Ctenopharyngodon idella (Valenciennes, 1884)

Taher¹

2022

BAER

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“…Limited field studies were conducted (Al-Seyab, 1996;Saleh et al, 2008) in Iraq on grass carp, while most studies were focused on laboratory experiments (Al-Dubakel et al, 2011;Jaafar and Ahmed, 2011;Al-Shkakrchy and Ahemed, 2013;Talal, 2013;Al-Maliky, 2017;Taher, 2017;Sayed-Lafi et al, 2018). Al-Dubakel et al (2020) pointed out that partial replacement of fish meal by Azolla filiculoides meal could be used in the diet of grass carp cultivated in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Effects of initial weight on growth criteria of grass carp, Ctenopharyngodon idella cultivated in earthen ponds

Taher

Muhammed

Al-Dubakel

et al. 2021

MJMS

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The current experiment was conducted in the Agricultural Research Station-Aquaculture Unit, College of Agriculture, University of Basrah from 27th June to 10th Nov 2020 in Al-Hartha District about 16 km northern-east of Basrah Governorate (30o65`64.6"N, 47o 74`79.5"E). Six earthen ponds (600 m3) were used to investigate the effect of three different initial weights of grass carp, Ctenopharyngodon idella [220.1-276.8 g (T1); 146.5-169.3 g (T2); 81.5-82.7 g (T3)]. Fishes were fed 3% daily using commercial pellets manufactured by Agricultural Consultant Office. The results of the current study indicated that T1 had better growth criteria (WI= 296.8 g, DGR= 2.53 g/day, SGR= 0.59%/day and FCR 5.23) compared with the other two treatments. There was a negative allometric pattern of growth (b less than 3) in the three treatments before and after the experiment. Statistical analysis of the results proved that there were significant differences (P≤0.05) in the modified condition factor (Kb) between the three treatments at the end of the experiment, while there were no significant differences (P>0.05) in the relative condition factor (Kn) and Fulton’s condition factor (K). It was concluded from the current experiment that the initial average weight of the grass carp must not be less than 250 g to achieved good results for fish culturist.

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“…Most studies in Iraq on grass carp deal with laboratory experiments (Jaafar & Ahmed, 2011;Al-Dubakel et al, 2011;Al-Shkakrchy & Ahemed, 2013;Talal, 2013;Al-Maliky, 2017;Taher, 2017;Sayed-Laf et al2018). Whereas limited field studies were conducted (Al-Seyab, 1996;Saleh et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Feeding Preferences of Grass Carp (Ctenopharyngodon idella ) for Three Aquatic Plants

Abdullah

Taher

Al-Dubakel³

2020

JKAS

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The present study was conducted to determine the feeding preferences of grass carp (Ctenopharyngodon idella) for three aquatic plants i.e. Water fern (Azolla filiculoides), duckweed (Lemna spp.) and water hyssop (Bacopa monnieri), in two different water temperature (22-24 and 27-29 oC ) for the period from 30 Oct.2019 to 12 Dec. 2019. Water hyssop were neglected from the second temperature experiment since no plant consumed in the first trail. The average fish weight in 22 -24 oC was 91.85±12.59 and in 27-29 oC was 89.19±16.18. Mean daily feeding rates (DFR) consumption of grass carp from water fern and duckweed were not significantly different (P>0.05), but both plants were eaten in significantly (P<0.05) greater quantities than water hyssop plant which was not eaten by grass carp. The consumed plants were 48.00 and 39.77% BW/day from water fern and duckweed in temperature 22-24 oC, while in 27-29 oC it was 47.19 and 41.83 %BW/day respectively. It was concluded from the present study that grass carp equally prefer water fern and duckweed but not water hyssop; this may be associated with the nature of taste and leave structure.

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Growth Performance and Implication of a Thermal-Unit Growth Coefficient of Grass Carp Ctenopharyngodon idella and Silver Carp Hypophthalmichthys Molitrix Larvae Reared in Recirculation System

Cited by 3 publications

References 0 publications

Effects of Water Temperature on Growth Criteria of Fingerlings of Grass Carp, Ctenopharyngodon idella (Valenciennes, 1884)

Effects of Water Temperature on Growth Criteria of Fingerlings of Grass Carp, Ctenopharyngodon idella (Valenciennes, 1884)

Effects of initial weight on growth criteria of grass carp, Ctenopharyngodon idella cultivated in earthen ponds

Feeding Preferences of Grass Carp (Ctenopharyngodon idella ) for Three Aquatic Plants

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