The snakehead (Channa striata ) is a common freshwater fish species in Malaysia. Details are given of a simple technique for breeding this species, suitable for small-scale farmers practising backyard aquaculture. Two techniques were used to induce spawning - the first used water level manipulation to simulate rain and the second used injected with human chorionic gonadotropic hormone. The former, more natural, spawning technique was found to provide a viable alternative for the small-scale farmer, being much simpler than hormone injection.
A summary is provided of a course introduced in 1987 at the Chaminuka Training Centre in Zimbabwe for training in rural aquaculture. The recruitment of trainees, aquaculture and rural development, the curriculum and practical training are outlined.
The great bulk of shrimp farming in India, as in most of Asia, as well as that of aquaculture in general in the region, is based on small scale farming activities, and in this regard, is no exception to other primary sector activities. The work on the development of better management practices (BMPs) on the shrimp culture sector commenced with the recognition of the need to place the sector on a firmer footing, while combating the problems of frequent disease occurrences, and to ensure its long term sustainability.
Aquaculture-dependent households in Bireuen District, Aceh, Indonesia, have in recent years endured repeated, diverse shocks; multiple economic shocks, shrimp disease, civil war and the 2004 Asian tsunami. Following the tsunami, extensive international aid efforts were directed at aquaculture pond rehabilitation. Yet, the pitfalls of simply recreating a system that was run down, underperforming and environmentally damaging due to the ongoing effects of multiple previous shocks are clear.
Rearing fish in seasonal floodplains raises productivity but can adversely affect the poor and the biodiversity of important natural fisheries. Equitable community institutions enable poor rural households to cooperate with landowners and adopt innovative technologies to optimize seasonal floodplain productivity by cultivating fish and/or by conserving natural fish.
This essay told the story of a Bangladesh woman in using integrated small-scale aquaculture technology on her small plot of pond in improving her family's livelihoods.
The old system of cultivating several species of tilapia together in the same pond has been changed to monospecies culture. Oreochromis andersonii has been shown to yield good growth and production rates. A broodstock (Kafue strain) of the species was introduced into the Chilanga Fish Farm and separate ponds for the production of fry, fingerlings and market-size fish have been maintained. Integrated fish farming using fish-cum-pig and fish-cum-duck combinations has given very good production results.
Aquaculture in riceland has been practiced in Mekong Delta, Vietnam for a long time and integrated rice-freshwater prawn (Macrobrachium rosenbergii) farming has become more and more popular. The integrated farming systems developed and practiced by farmers in the area to produce more food and more cash crops are presented and discussed.
Fish play a crucial role in the Bangladeshi diet, providing more than 60% of animal source food, representing a crucial source of micro-nutrients, and possessing an extremely strong cultural attachment. Fish (including shrimp and prawn) is the second most valuable agricultural crop, and its production contributes to the livelihoods and employment of millions. The culture and consumption of fish therefore has important implications for national food and nutrition security, poverty and growth.
Some interesting ideas on improving the cost-effectiveness of feeding in semi-intensive finfish aquaculture are presented.