HETEROBRANCHUS BIDORSALIS PDF

This study was carried out to measure the optimum growth of Heterobranchus bidorsalis and the best time to crop under maximum utilization of. Biology. Hardly anything is known about the biology of this species (Ref. ). Maximum reported size for West Africa: mm TL (Ref. ). Trusted. Information about the classification of Heterobranchus bidorsalis. Includes facts, pictures and articles.

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Retrieved from ” https: Connect with us Help us improve the site by taking our survey. Reproductive performance of african clariid catfish Clarias gariepinus broodstocks on varying maternal stress. During the period of study after the initial stocking of fish per 0. The protein requirements of most countries cannot be adequately met by poultry and heteribranchus food.

Heterobranchus – Wikipedia

Survival rate, specific growth rate and condition factor of fish species were also determined. The reason for this high FCR is not known. Entered by Binohlan, Crispina B. The pure line H. Optimum growth performances of fingerlings of artificially propagated Heterobranchus bidorsalis were investigated. Effect of mixed feeding schedules with varying dietary crude protein levels on the growth and feed utilization of Clarias gariepinus Burchell, fingerlings. The eggs that oozed out were collected in dry bowls.

April 18, ; Published: Absence of ovulation due to inaccurate dosage of hypophysis can be eliminated. In all, there were six bowls of eggs from three female H. Hardly anything is known about the biology of this species Ref.

In studies on the effects of pollution on this fish it was shown to be tolerant to acute levels of agrolyser a type of fertilizerhowever a high concentration of anthracene in the liver can kill the catfish. Additional Information Encyclopedia of Life. Evaluation of Clarias isheriensis Sydenham under semi-intensive management in ponds. The percentage data were transformed to arc sin values before analysis Zar, Effects of II-esoxcorticosterone-acetate and carp pituitary suspension on follicle maturation in the ovaries of African catfish Clarias lazera C and V.

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The various hormones used for the ovulation synchronization in the spawners resulted in different responses of the latter to some parameters.

They were held in three 6 m 3 concrete tanks. The effects of water hyacinth Eichhornia crassipes [Mart.

Relationship between mean body weight and mean standard length of Heterobranchus bidoralis in July. Three hormones were used in this study; one synthetic and two natural hormones.

Optimum Growth Determination of Heterobranchus bidorsalis in Earthen Ponds

Survival at harvest after 26 weeks was Feeds and water quality: Fry were fed 0. You can sponsor this page.

In order to ensure the continued growth of the industry, there is the need to increase fish seed. The need for the production of increased number of quality fingerlings of catfish for the growth of catfish culture in Nigeria and other African countries cannot be overemphasized.

This can be achieved by artificial propagation by induced breeding Richter and Van Der Hurk, ; Naeem et al. ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Breeding and Cultivation of Fish.

Nutrient utilization parameters of pure breed and hybrid of catfish Clarias gariepinus and Heterobranchus bidorsalis induced with synthetic hormone Ovaprim and pituitary glands of male and female Heterobranchus bidorsalis. Male and female pituitary hormones were extracted according to the method described by Viveen et al. Reproductive performance of African Catfish, Heterobranchus bidorsalis under different feeding regimes.

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After a month, forty-five 4-weeks old fry from each genetic cross were stocked in 3 replicates in the tanks.

Initial growth coefficient, B: The highest values for FI 3. Further studies on the growth, morphormetric and meristic characteristics of Clarias anguillaris: The parameters are water temperature measured with mercury-in-glass thermometer. Heterobranchus bidorsalisthe African catfish or eel-like fattyfin catfishis an airbreathing catfish found in Africa. Determination of water quality parameters: Feeding was done twice daily; morning 9: Preliminary studies on initiation of uniform size breeding line in Heterobranchus – Clarias gynogens.

The synthetic hormone, ovaprim Aqualife Syndel International Inc. Milts from male H. Comparative survival and growth rate of Clarias gariepinus and heteroclarias hathclings fed live and frozen daphnia.

Hatchery raised gravid broodstocks were selected from Lagos State University hatchery.

Human uses

Parameters of length-weight relationship of pure heterobranchux and hybrid of catfish Clarias gariepinus and Heterobranchus bidorsalis induced with synthetic hormone Ovaprim and pituitary glands of male and female Heterobranchus bidorsalis. However, the numerous potentials of the aquaculture industry are threatened by inadequate fish seed needed for production. That is, two bowls contained eggs from female H.

Relationship between mean body weight and number of weeks of growth in Heterobranchus bidorsalis. Heterobrandhus, the FCR in most fishes e. The eggs from each female H.