Experimental Studies on Growth

“…Standard formulae were used to determine growth parameters as gain in body weight and length (Okoye et al, 2001), % gain in body weight, specific growth rate (Brown, 1957), condition factor (Bagenal and Tesch, 1978), feed conversion ratio (Adikwu, 2003), protein efficiency ratio (Utne, 1979) and survival rate (Alatise and Otubusin, 2006).…”

Section: Stocking and Feeding Of Fishmentioning

confidence: 99%

Growth and Feed utilization of Catfish Hybrid (Heterobranchus longifilis x Clarias gariepinus ) Fingerlings fed practical diets

Keremah¹,

Deekae²,

Akalokwu³

2013

GJAS

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The effects of four practical diets (3 commercial and one locally prepared) on growth, feed utilization and survival of catfish hybrid (Heterobranchus longifilis x Clarias gariepinus ) fingerlings were compared in plastic aquaria in triplicates for 56days. Diets differed in crude protein (CP) and digestible energy as follows: Commercial Diet 1 (39.73% CP, 3911.8Kcal/kg), Diet 2 (34.50% CP, 3926.8Kcal/kg), Diet 3 (45.37%, 3883.6Kcal/kg) and local Diet 4 (40.34% CP, 3861.8Kcal/kg). Observations made indicated higher performance in weight and percent weight gain (2.299g, 411%), specific growth rate (0.78% day -1 ), condition factor (0.96), feed conversion ratio (2.67) and protein efficiency ratio (10.73) for fingerlings fed Diet 3 than other diets. Commercial Diet 2 appeared to perform least among the test diets. Fish survival was high and varied between 76.7% (Diet 4) and 96.7% (Diet 1). These results demonstrated that catfish hybrid fingerlings can be successfully reared in aquaria with good feed conversion, growth and high survival on commercially or locally prepared diets with 45.37% CP and adequate energy.

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“…Average daily gain (ADG) and (%) Survival were followed according to De silva (1989). SGR and FCR were calculated according to Brown (1957), Castell and Tiews (1980), Hepher (2009) Gross energy was calculated according to Hasan et al, 1989;Tacon, 1990 2 Protein to energy ratio in mg protein per kJ of gross energy ) of fishes were then calculated and compared among the treatment.…”

Section: Estimation Of Growth Survival Production and Feed Utilizationmentioning

confidence: 99%

Stocking density of threatened cat fish Heteropneustes fossilis (Bloch, 1792) in seasonal ponds of Rajshahi, Bangladesh

Samad

Bhuiyan

2017

Bangladesh J. Sci. Ind. Res.

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An attempt was made to evaluate the effect of stocking density on the growth of Heteropneustes fossilis for a period of six months reared in earthen ponds at Rajshahi University Campus. H. fossilis fingerling were stocked at the rate of 320, 280, 240/dec in treatment T1, T2 and T3, respectively, The treatments had significant effects on the weight gain, length gain, ADG, SGR parameters among the treatments. Highest weight gain (45.90g) was observed in T3 and lowest (36.97g) in T1. Significant (P<0.05) highest yield was obtained in case of T2 and T3 and it was 2686.80 kg/ha and 2343 kg/ha, respectively. Higher net benefits (5,18519.91TK/ha) were obtained from treatment T2, than from treatments T1 and T3, water temperature, transparency, pH and dissolved oxygen did not differ significantly (P>0.05) among the treatments depicting the suitable range for fish culture. The plankton levels in all the treatments were found to be at optimum state. Final length, final weight and survival of fingerlings followed the same trends of weight gain. Cost benefit ratio was also highest (1:0.93) in T2, followed by T3 and T1. Overall, highest growth, fish yield survival (95.67%) rate and net benefits of fingerlings were obtained at a density of 280/dec (69, 160 individuals/ha) in treatment T2 were recorded.Bangladesh J. Sci. Ind. Res. 52(4), 253-262, 2017

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Experimental Studies on Growth

Cited by 273 publications

References 34 publications

Culture technique of endangered Notopterus chitala (Hamilton, 1822) with Oreochromis niloticus for domestication in pond habitat

Culture technique of endangered Notopterus chitala (Hamilton, 1822) with Oreochromis niloticus for domestication in pond habitat

Growth and Feed utilization of Catfish Hybrid (Heterobranchus longifilis x Clarias gariepinus ) Fingerlings fed practical diets

Stocking density of threatened cat fish Heteropneustes fossilis (Bloch, 1792) in seasonal ponds of Rajshahi, Bangladesh

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