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Puntius Gonionotus Fingerlings (Puntiu + gonionotu_fingerling)

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Earth and Environmental Science	100%

Selected Abstracts

A dietary energy level of 14.6 MJ kg,1 and protein-to-energy ratio of 20.2 g MJ,1 results in best growth performance and nutrient accretion in silver barb Puntius gonionotus fingerlings

AQUACULTURE NUTRITION, Issue 6 2009
K.N. MOHANTA
Abstract Five iso-nitrogenous (300 g protein kg,1 diet) and iso-lipidic (80 g kg,1 diet) semi-purified experimental diets with variable energy levels of 10.5 (D-1), 12.5 (D-2), 14.6 (D-3), 16.7 (D-4) and 18.8 (D-5) MJ kg,1 diets were fed to Puntius gonionotus fingerlings (average weight 1.79 ± 0.02 g) in triplicate groups (15 healthy fishes per replicate) for a period of 90 days to assess the optimum dietary energy level and protein-to-energy ratio (P/E). Fifteen flow-through cement tanks of 100 L capacity with a flow rate of 0.5 L min,1 were used for rearing the fish. Maximum specific growth rate, protein efficiency ratio, protein productive value, RNA : DNA ratio, whole body protein content, digestive enzyme activity and minimum feed conversion ratio was found in fish-fed diet D-3 with 14.6 MJ kg,1 energy level. There were no improvements in all these parameters with the further rise in dietary energy level. Hence, it may be concluded that the optimum dietary gross energy level for maximum growth and nutrient utilization of silver barb is 14.6 MJ kg,1 diet with a resultant P/E ratio of 20.2 g protein MJ,1 diet, when the dietary protein and lipid are maintained at optimum requirement levels of 300 and 80 g kg,1 diet, respectively, for this species. [source]

Carbohydrate level in the diet of silver barb, Puntius gonionotus (Bleeker) fingerlings: effect on growth, nutrient utilization and whole body composition

AQUACULTURE RESEARCH, Issue 8 2009
Kedar Nath Mohanta
Abstract Five iso-nitrogenous (300 g crude protein kg,1 diet) semi-purified diets with graded levels of carbohydrate at 220 (D-1), 260 (D-2), 300 (D-3), 340 (D-4) and 380 (D-5) g kg,1 diet were fed ad libitum to Puntius gonionotus fingerlings (average weight 0.59±0.01 g) in triplicate groups (20 fish replicate,1) for a period of 90 days to determine the effect of the dietary carbohydrate level on the growth, nutrient utilization, digestibility, gut enzyme activity and whole-body composition of fish. Fifteen flow-through cement tanks of 100 L capacity with a flow rate of 0.5 L min,1 were used for rearing the fish. The maximum weight gain, specific growth rate, protein efficiency ratio, RNA:DNA ratio, whole-body protein content, protease activity, protein and energy digestibility and minimum feed conversion ratio (FCR) were found in the D-2 group fed with 260 g carbohydrate kg,1 diet. The highest protein and energy retention was also recorded in the same group. However, from the second-order polynomial regression analysis, the maximum growth and nutrient utilization of P. gonionotus fingerlings was 291.3,298.3 g carbohydrate kg,1 diet at a dietary protein level of 300 g kg,1 with a protein/energy (P/E) ratio of 20.58 ,20.75 g protein MJ,1. [source]

Effect of different oil cake sources on growth, nutrient retention and digestibility, muscle nucleic acid content, gut enzyme activities and whole-body composition in silver barb, Puntius gonionotus fingerlings

AQUACULTURE RESEARCH, Issue 16 2007
Kedar Nath Mohanta
Abstract Six iso-nitrogenous (30% crude protein) and iso-energetic (15 kJ g,1) diets were prepared using different oil cake sources, viz. groundnut, soybean, sunflower, sesame, mustard and mixed oil cakes as major ingredients, and protein sources along with a minimum of 5% fish meal in each diet and were fed to silver barb Puntius gonionotus fingerlings (16.20±0.11 g) ad libitum four times a day close to an apparent satiation level for a period of 60 days to determine the effect of diets on growth, nutrient utilization, apparent digestibility coefficient (ADC) of the nutrients in the diets, gut enzyme activity, muscle nucleic acid content and whole-body chemical composition of fish. Significantly higher (P<0.05) weight gain, specific growth rate, protein efficiency ratio, nutrient retention, ADC of nutrients in the diets, DNA:RNA ratio, protease and amylase activity with lower (P<0.05) feed:gain values were recorded in fish-fed groundnut and soybean oil cake-based diets than other diets tested. Among the dietary treatment groups, significantly higher (P<0.05) whole-body protein, lipid and energy were also found in groundnut oil cake- and soybean oil cake-based diets. The study suggests that the groundnut and soybean oil cake-based diets, which led to significantly higher (P<0.05) growth and nutrient utilization than the other oil cake-based diets in P. gonionotus fingerlings, may be used for pond culture of this species. [source]