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.

Author: Golticage Shaktizilkree
Country: Germany
Language: English (Spanish)
Genre: Literature
Published (Last): 25 June 2014
Pages: 196
PDF File Size: 19.88 Mb
ePub File Size: 16.98 Mb
ISBN: 881-3-26163-671-3
Downloads: 73915
Price: Free* [*Free Regsitration Required]
Uploader: Taucage

Values for total ammonia nitrogen did not exceed 0. Evaluation of Clarias isheriensis Sydenham under semi-intensive management in ponds. Species Heterobranchus bidorsalis African catfish. Articles with ‘species’ microformats. Nigeria contributes significantly to catfish supply in Africa. The range of values recorded for dissolved oxygentemperature and pH were 1. Confused by a class within a class or an order within an order? Water quality parameters of the culturing medium of pure breed and hybrid of Heterobranchus bidorsalis.

After linearization, the equation became:. The removal of larger fish would also provide early cash return and eliminate the need of looking for buyers for a large percentage of the Heterobranchus bidorsalis which would have been commercially marketable in the restaurant trade Fig.

The protein requirements of most countries cannot be adequately met by poultry and livestock food. The growth of brown trout Salmo trutta Linn.

Preliminary Study on the intergeneric hybridization of Clarias anguillaris and Heterobranchus bidorsalis.

Three hormones were used in this study; one synthetic and two natural hormones. Economics of Periphyton-based aquaculture production in Bangladesh. The pure breeds and hybrids used in this study had condition factors K greater than 1, except pure breed H. Percentage fertilization, Hatching rate and survival rate 14 days Post-hatch of pure breed and hybrid catfish Clarias gariepinus and Heterobranchus bidorsalis induced with synthetic hormone Ovaprim and pituitary of Heterobranchus bidorsalis.

  AMPLIFICATEUR OPERATIONNEL PDF

The calculation of SGR which accounts for both initial and final sizes is useful in comparing growth of the fish species at different sizes Brown, The percentage data were transformed to arc sin values before analysis Zar, This catfish is a demersal fish and inhabits freshwater. The Animal Diversity Web is an educational resource heterobbranchus largely by and for college students.

Fry were fed ad-libitum with Artemia shell-free for 14 days. The values observed in PER were generally low 0. Among the Culturable food fish in Nigeria, catfish especially Clarias gariepinus and Heterobranchus sp. The pure line H. Water quality parameters were generally within acceptable limits.

Their growth performance and nutrient utilization ability were assessed. Retrieved 14 January Condition factor K to determine the relative robustness i.

Female fish were also selected on the basis of ovarian biopsy Legendre, Heterobdanchus O is the intercept on Y-axis; B 1 is the slope of the line or gradient and X 1 is no of weeks of growth.

Textbook of Fish Culture: Sublethal effects of cadmium on some selected haematological parameters of heteroclarias A Hybrid of Heterobranchus bidorsalis and Clarias gariepinus. The condition factor was calculated by the formula Pauly, Poultry products are more expensive than fish and beef have been implicated in heart disease. Estimates of some properties based on models Phylogenetic diversity index Ref.

Use of Tadpole meal as substitute for fish meal in the diet of Heterobranchus bidorsalis Geofrey st, Hillaire, This is because at this low level of production, aquaculturists have not been able to meet the market demand. Another two bowls contained eggs from female H. Bidorsalia pysico-chemical parameters dissolved oxygen, temperature and pH were measured in this study.

  AMMINI CHECHI PDF

Human uses

To cite this page: In this study, 3 heterobrznchus Heterobranchus bidorsalis3 male Heterobranchus bidorsalis and 3 male Clarias gariepinus were used for the experiment. The effects of water hyacinth Eichhornia crassipes [Mart. Comparative growth and survival of catfish- Clarias specie, Heterobranchus species and their hybrid fry under outdoor nursery management system.

Relationship between mean body weight heterorbanchus mean standard length of Heterobranchus bidorsalis in June. Beyond this time there was decreased efficiency of feed utilization and a decline in growth rate set in Fig. This study is aimed at evaluating the potentials for culturing Heterobranchus bidorsalis to commercial size and using simple regression technique equation to determine the relationship between the body weight of Heterobranchus bidorsalis and the number of weeks of growth with a view of determining the optimum growth and the best time to heterobeanchus under maximum utilization of feed in semi-intensive pond condition.

ADW: Heterobranchus bidorsalis: CLASSIFICATION

How heyerobranchus cite this article: Mean condition factor K for fish sampled was 1. Entered by Binohlan, Crispina B.

Temperature was monitored with a simple mercury-in-glass thermometer graduated in 0. However, the pure breeds and hybrids obtained from induction with the synthetic hormone ovaprim and male pituitary extract performed better than those induced with female pituitary extract.

Heterobranchus bidorsalis – Wikipedia

Final length-weight relationship, correlation coefficient and condition factor of study fish. The synthetic hormone, ovaprim Aqualife Syndel International Inc.

Pascal Opuehi for their assistance in the collection of data and for taking care of the fish.