World Food Policy Volume 3, No. 2/Volume 4, No. 1, Fall16/Spring17 | Page 41

New Freshwater Aquaculture Systems in the Red River Delta of Vietnam: Evolution of a Key Role in Food Systems and Rural Development tion, area and number of fruit trees, and the household’s economic status as well as their experience in fish production were determined (see Table 3). (J). While these indicators are desirable because E, F, G, H, I, and J are ade- quate records and over time to indicate the degree of variability in the perfor- mance of the subject farm, they do not in and of themselves provide any basis for comparing a farm's income levels to those of other farms. If whole-farm comparison is introduced at this point, the results are summarized in Table 2. Thus, fish farms would be compared in terms of the measures E, F, G, H, I, J with other farms in the village or area having a similar size, soil, water supply, etc. but not necessarily the same mix of activities. It was reported by the house- holds with animal/fish production (AF systems) and commercially inten- sive fish production (FS) systems that their fish cultures in the past origi- nated with the traditional homestead VAC model which, to a certain extent, has disappeared. However, the modern VAC and other systems still exist due to the number of farmers who believe strongly that the current VAC mod- el has been restructured by increasing and balancing its economic scale level of components, namely fish pond size, orchards, and animal husbandry. VAC households are, thus, not characterized as aquaculture ventures. On the other hand, most farmers belonging to AF or FS household groups answered that they were able to develop their fish pro- duction thanks to the accumulation of knowledge and experience in aquacul- ture, as well as capital investments from establishing the traditionally small VAC model. III. Research Results and Discussion A Key Role of Aquaculture in the Food Production System T o understand the context of aquaculture development, group discussions were used to iden- tify the basic features and characteris- tics of the existing freshwater aquacul- ture production systems in the survey areas. The findings showed that fish farms usually have three components: (1) the homestead and perennial trees (fruit orchards created by pond dikes), (2) the pond, and (3) the rice field. The livestock, fruit orchards, and the pond are usually located together. The home- stead area consists of livestock, fruit orchards, vegetables, and other trees which are located close to the residence, with an average area of around 433 m 2 . In addition, the link between the com- ponents, the scale of livestock produc- The benefits of aquaculture in food systems within the context of ru- ral development relates to health and nutrition, employment, income, the reduction of vulnerability, and farm sustainability. In the municipal survey, the freshwater aquaculture systems provide high-quality animal protein and essential nutrients, especially for nutritionally vulnerable groups such as pregnant and lactating women, infants, and pre-school children. In particular, 41