Growth and production of fingerlings of Dutch Clarias gariepinus in indoor tanks in arid zone, Nigeria
Study on the growth and percentage survival of seasonal induced breeding was carried out at the Federal College of Freshwater Fisheries Technology Baga. About 40,414 fingerlings were produced with percentage survival of 81.1 % at water temperature of 28degrees C between April and May, 2009. The average weight of fingerlings produced was 1.54 g with average standard and total length of 3.0 cm and 3.5 cm respectively. However, environmental factors that could hinder mass production of Dutch Clarias fry/fingerlings stocked at low and high stocking densities were monitored for eight weeks at 3.6 m2 indoor concrete tanks with water aeration using flow-through system. The percentage survival of 83.5% and 92.5% were obtained after the period of 8 weeks. The fry/fingerlings were fed with Artemia mixed with powdered feed of 35 % crude protein. The study shows that for Dutch Clarias fry/fingerlings production and management, smaller concrete tanks with flow-through mechanism are required and 3.6 m2 should not be stocked with more than 3,500 fingerlings per tank in the first 8 weeks before transferring them to production ponds. It was observed that apart from efficient water aeration, constant feeding and sampling of fingerlings will increase growth rate, increase resistance to disease and uniformity in size of the Dutch Clarias. The mean water temperature measured in this study ranged from 27.5degrees C in April and 28.5degrees C in May while pH ranged between 7.5 and 7.3 in April and May, respectively.
| Main Authors: | , , |
|---|---|
| Format: | conference_item biblioteca |
| Language: | English |
| Published: |
Fisheries Society of Nigeria
2009
|
| Subjects: | Aquaculture, Clarias gariepinus, Nigeria, Baga, freshwater environment, Fish culture, Freshwater aquaculture, Pond culture, Survival, |
| Online Access: | http://hdl.handle.net/1834/38045 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|