Effects of four stocking densities and three diets on growth and survival of postlarval Macrobrachium rosenbergii and M. acanthurus
Willis, S.A.; Hagood, R.W.; Eliason, G.T. (1976). Effects of four stocking densities and three diets on growth and survival of postlarval Macrobrachium rosenbergii and M. acanthurus, in: Avault, J.W. Proceedings of the seventh annual workshop World Mariculture Society: January 25-29, 1976, San Diego, California. Journal of the World Mariculture Society, 7: pp. 655-665
In: Avault, J.W. (1976). Proceedings of the seventh annual workshop World Mariculture Society: January 25-29, 1976, San Diego, California. Journal of the World Mariculture Society, 7. World Mariculture Society: Baton Rouge. 727 pp., more
In: Journal of the World Mariculture Society. Louisiana State University: Baton Rouge, Louisiana. ISSN 0735-0147, more
|  |
| Available in | Authors |
|
Document type: Conference paper
|
| Keywords |
Containers > Tanks > Culture tanks
Diets
Population functions > Growth
Stocking density
Macrobrachium acanthurus (Wiegmann, 1836) [WoRMS]; Macrobrachium rosenbergii (De Man, 1879) [WoRMS]
Marine/Coastal |
| Authors | | Top |
- Willis, S.A.
- Hagood, R.W.
- Eliason, G.T.
|
|
|
| Abstract |
Effects of stocking density and three diets on growth and survival of 1 week post-metamorphic Macrobrachium rosenbergii and M. acanthurus were studied. Experiments were conducted on shrimp held for 2 months in laboratory tanks under a controlled temperature, light, and feeding regime. Initial stocking densities were 215, 430, 645, and 860 shrimp/m2 tank bottom. Shrimp were fed Purina 20% protein marine ration at 5% body weight daily. Habitat was gravel bottom. survival was highest at 215 shrimp/m2 , but overall growth was best at 430 shrimp/m2 . M. acanthurus survival and growth were very erratic. Two commercially available diets (Purina 25% marine ration, and Purina No. 1 trout chow) and a 'natural' diet composed of chopped fish, shrimp, earthworm, rice, and mung beans were selected for dietary studies. Shrimp were stocked at 107 . 5 shrimp/m2 tank bottom. A three-tiered habitat was added to reduce aggression and food competition. Shrimp were fed at 20% body weight daily for the first six weeks and 12% daily for the final two weeks. Trout chow produced the most rapid growth; maximum average increase in M. rosenbergii was from 0 . 03 g initially to 1 . 20 g after 2 months. |
|
