Digestibility of Bamboo-Grown Periphyton by Carps (Catla catla, Labeo rohita, Cirrhinus mrigala, Cyprinus carpio, Ctenopharyngodon idella, and Tor khudree) and Hybrid Red Tilapia (Oreochromis mossambicus × O. niloticus)

2004 ◽  
Vol 15 (3-4) ◽  
pp. 151-162 ◽  
Author(s):  
B. Gangadhara ◽  
P. Keshavanath ◽  
T. J. Ramesha ◽  
M. Priyadarshini
Keyword(s):  
Cyprinus Carpio ◽  
Labeo Rohita ◽  
Oreochromis Mossambicus ◽  
Ctenopharyngodon Idella ◽  
Catla Catla ◽  
Cirrhinus Mrigala ◽  
Red Tilapia

scholarly journals The Relationship of Ova Diameter to Fertilization Rates, Hatching Rates, Survival Percentages and Specific Growth Rates in the Common Carp and Indian Major Carps

2007 ◽  
Vol 19 (3) ◽  
Author(s):  
R.K. SINGH ◽  
P.A. KHANDAGALE ◽  
S.L. CHAVAN ◽  
P.H. SAPKALE
Keyword(s):  
Growth Rate ◽  
Cyprinus Carpio ◽  
Specific Growth ◽  
Labeo Rohita ◽  
Fertilization Rate ◽  
Catla Catla ◽  
Cirrhinus Mrigala ◽  
Indian Major Carps ◽  
Relationship Of ◽  
Major Carps

The effects of different ova diameters on hatching, growth and survival of fry of the common carp (Cyprinus carpio var. communis, Cyprinidae) and Indian major carps viz.Catla catla, Labeo rohita, Cirrhinus mrigala (Cyprinidae) were examined. The four female brooders of different weight and size of each of Cyprinus carpio var. communis, Catla catla; Labeo rohita and Cirrhinus mrigala were collected. The highest mean ova diameter was observed in (Cyc 4) 1.235 ± 0.006 mm, (Cc 4) 5.386 ± 0.098 mm, (Lr 4) 4.94 ± 0.167 mm and (Cm 4) 4.95 ± 0.091 mm; highest fertilization rate (Cyc 4) 92.48%, (Cc 4) 85.42%, (Lr 4) 89.64%, (Cm 4) 86.49%; highest hatching percentage (Cyc 4) 82.32%, (Cc 4) 79.67%, (Lr 4) 81.28%, (Cm 4) 80.17% and highest survival (Cyc 4) 75.57%, (Cc 4) 76.36%, (Lr 4) 80.51%, (Cm 4) 68.35% respectively. The specific growth rate was also found highest in Cyprinus carpio var. communis (Cyc 4) 5.94%, Catla catla (Cc 4) 5.62%, Labeo rohita (Lr 4) 5.81% and Cirrhinus mrigala (Cm 4) 5.86% in fry of brooders having maximum weight. The direct relationship of ova diameter to fertilization rate, hatching, survival percentage and the specific growth rate of Cyprinus carpio var. communis, Catla catla, Labeo rohita and Cirrhinus mrigala were recorded. However, after the fifth week, the growth rate of spawn reduced in all the groups and was least at the end of the eighth week.

scholarly journals Fry production, induced breeding practices and cost-profit analysis of the hatcheries of Rajshahi district in Bangladesh

2014 ◽  
Vol 2 (3) ◽  
pp. 209
Author(s):  
Naima Aktar ◽  
Abdus Salam Bhuiyan ◽  
M Nazrul Islam
Keyword(s):  
Labeo Rohita ◽  
Ctenopharyngodon Idella ◽  
Catla Catla ◽  
Hatching Rate ◽  
Hypophthalmichthys Molitrix ◽  
Total Cost ◽  
Profit Analysis ◽  
Net Profit ◽  
Profit Status ◽  
Breeding Practices

This study was conducted on the 13 hatcheries of Rajshahi district from March to December 2013 to know about the fry production status, induced breeding practices and cost-profit status. Average fry production of Labeo rohita, 93.38±83.32 kg, Catla catla, 62.00±60.84 kg, Cirrhinus cirrhosus, 77.46±58.61 kg, L. calbasu, 14.20±14.60 kg, L. bata, 53.73±50.56 kg, L. gonia, 10.00±0 kg, Heteropneustes fossilis, 5.00±0 kg, Clarias batrachus, 20.00±0 kg, Hypophthalmichthys molitrix, 149.77±138.45 kg, Aristichthys nobilis, 104.54±148.11 kg, Ctenopharyngodon idella, 19.20±15.35 kg, Cyprinus carpio 108.08±77.39 kg and Barbonymus gonionotus, 23.10±14.04 kg were recorded in the surveyed hatcheries. Two types of hormone injections PG (pituitary gland) and HCG (Human chorionic gonadotropin) were used for induced breeding. The rate of 1st dose of injection of PG varied from 1 to 2 mg/kg and HCG from 100-150 IU/kg and the rate of 2nd dose of injection of PG varied between 5 and 8 mg/kg. The incubation period and hatching rate in different fish species varied from 10 to 72 hours and 55% to 80%, respectively. The average total cost, gross return and net profit of the hatcheries were 0.667±0.798, 1.152±1.636 and 0.485±0.846 million BDT respectively.

scholarly journals Simple Gas Chromatographic Method for the Quantification of Total Cholesterol in Fish Meats

2010 ◽  
Vol 93 (4) ◽  
pp. 1249-1254
Author(s):  
Nusrat N Memon ◽  
Syed Tufail H Sherazi ◽  
Farah N Talpur ◽  
Muhammad I Bhanger
Keyword(s):  
Significant Variation ◽  
Labeo Rohita ◽  
Standard Addition ◽  
Cholesterol Content ◽  
Ctenopharyngodon Idella ◽  
Catla Catla ◽  
Indus River ◽  
Folch Method ◽  
Wallago Attu ◽  
Gas Chromatographic Method

Abstract Six fish speciesCirrhinus mrigala (Morakhi), Labeo rohita (Danbhro), Catla catla (Thalli), Wallago attu (Jarko), Ctenopharyngodon idella (Grass), and Cyprimus carpio (Gulfam)commonly found in the Pakistani Indus river, were selected for fat and cholesterol evaluation. Fat content was quantified by the Folch method and cholesterol content was determined by a simple GC method. The application of the proposed method to quantify cholesterol content revealed variations among the six breeds evaluated. The breeds studied contained 0.801.95 fat, indicating that all investigated fishes were lean; significant variation was found in cholesterol content, and ranged between 72 and 392 mg/100 g. Standard addition analyses showed that the method was accurate, as the recovery of cholesterol varied from 95 to 103, with a coefficient of variance not more than 5.6. The results showed that, after the development of suitable calibration, within 11 min, the cholesterol could be accurately determined by GC.

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