First feeding of walking catfish (Clarias macrocephalus) | |
| Author | Husain, A. K. M. Akhter |
| Call Number | AIT Thesis no.AE-88-28 |
| Subject(s) | Fish-culture Catfishes |
| Note | A Thesis submitted in partial fulfilment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Five experiments were conducted to elucidate the first feeding of walking catfish( Clarias macrocephalus). Moinamacrocopa feeding on heterotrophs and autotrophs were analysed separately, their proximate composition was 70% protein ,12% crude fat,5% ash, and its wet biomass contained 90% moisture. Fry feeding rate was determined on five Moina densities (10, 25, 50, 100 and 150 Moina) per fry of different ages ( 5, 10 and 15 days), their gastric evacuation rate was determined at time intervals of 10, 30, 60 and 120 minutes. The feeding rate of 5-, 10- and 15-day old fry was 12.4, 12.2 and 40.7 Moina /fry/feeding , respectively. Feeding r ate and gastric evacuation rate increased with increasing fry age. Rea ring of Clarias fry with different diets (live Moina, frozen Moina, dried Moina , beef liver plus fish flesh and Powder feed indicates that it is impractical to r ear Clarias fry with avail able artificial diets as first feed because of low survival . Fry survival with live Moina feed was 79%, frozen Moina 40%, powder feed 17% and the dried Moina and Beef liver were 0% during a 15 -day rearing period. Survival and growth rates were determined for Clarias fry fed on live Moina for different time periods (5, 8 and 10 days) and then reared the same fry with four experimental diets for 15,12 and 10 days, respectively. Average fry daily feeding rate was live Moina 34% and 30% artificial diets (dry wt.basis) of body weight. Fry fed with live Moina produced maximum survival rate , growth rate and feed conversion ratio among all the diets tested. Clarias fry were reared at 5 different densities (10, 25 , 50, 100 and 250 fry/L) in recirculated wate r system show that fry growth rate and survival were not significant ly different among various stocking density. |
| Year | 1988 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Lin, Chang Kwei; |
| Examination Committee(s) | Wee, Kok Leong ;Little, David C. ; |
| Scholarship Donor(s) | British Council ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1988 |