An on-farm pig feed trial in Thanh Hoa Province of Northern Vietnam was conducted to find ways to... more An on-farm pig feed trial in Thanh Hoa Province of Northern Vietnam was conducted to find ways to improve the current sweet potato-pig system by prescribing balanced daily feed ration, replacing sweet potato roots with dried chips, and adding greater quantities of protein supplement. The feed formulation and treatments were based on the results of a survey of current practices in order to take into consideration the local situation. The on-farm trial was conducted in six households under the supervision of the Vietnamese government extension service. The results of the trial indicate that the balanced daily ration and dried sweet potato chips improved pig growth, and the dried chips promoted both better growth and required lower cost per kilogram of weight gain. Greater quantities of protein supplement, on the other hand, added substantial extra cost, which led to low profitability. These results are being tested by a follow-up validation trial.
Sweetpotato has become the most important crop in Uganda in recent years following the devastatio... more Sweetpotato has become the most important crop in Uganda in recent years following the devastation of cassava harvests by viral epidemics. Throughout the country the primary function of sweetpotato is food security, but that does not diminish its potential for generating income through appropriate post-harvest utilization. This paper examines related aspects of sweetpotato production, processing, utilization, and marketing to set post-harvest research strategies for addressing local food security and income generation. The findings indicate the following strategy setting. First of all, to ensure a steady supply of this important staple, research efforts need to focus on planting material, appropriate technology for processing, and storage of fresh or processed roots. Secondly, improvement of the current sweetpotato-pig system exhibits great potential for generating higher rural incomes through increased pig growth. Thus, detailed recommendations for pig-feed trials, based on local c...
Dai Peters is currently working on research related to sweetpotato postharvest utilization in the... more Dai Peters is currently working on research related to sweetpotato postharvest utilization in the context of rural
This paper reports the preliminary results of an investigation into agrifood-based enterprise clu... more This paper reports the preliminary results of an investigation into agrifood-based enterprise clusters in two communes in Hoai Due District of Ha Tay province, Vietnam. Dong Lieu commune specialises in root crop processing, and Cat Que in piglet production and marketing. This project has been implemented in the context of a Strategic Initiative on Urban and Peri-Urban Agriculture (SIUPA) of the CGIAR, in collaboration with the Rural Agroenterprise Development Project of CIAT and Vietnam national research institutions and local government authorities in Ha Tay. The cassava and canna processing cluster in Dong Lieu is a complex system with many small household enterprises trading fresh roots, starch, and products derived from them to traditional and novel (industrial, high growth) markets. The pig production and marketing commune in Cat Que is less complex, but still concentrated and highly specialised in raising piglets from 6 kg to approximately 27 kg within 45-60 days. Both commune...
Uganda is the largest sweetpotato producer in Africa and in most areas of the country, it plays a... more Uganda is the largest sweetpotato producer in Africa and in most areas of the country, it plays and important role of providing food security in areas where it is cultivated (Bashaasha et al.1995). This role has become more prominent in areas where cassava, the second most important crop next to banana, has been destroyed by the African Mosaic virus. Bashaasha et al. (1995) identified sweetpotato post-harvest constraints such as lack of markets, poor storage facilities, limited use opportunities, among other agronomic constraints to production, as some of the major obstacles to sweetpotato development. These indicate the need to examine sweetpotato post-harvest strategies to overcome the obstacles and address the issue of food security in Uganda.
An analysis of the household economy of a sweetpotato-producing county in Sichuan Province of Chi... more An analysis of the household economy of a sweetpotato-producing county in Sichuan Province of China shows that sweetpotato is currently under-utilized in an inefficient sweetpotato-pig feed system. Meanwhile, poverty drives many young men and women to seek employment opportunities in major coastal cities far from home. This paper reviews the contributions of sweetpotato, pigraising, and migration income in the household economy in order to investigate whether sweetpotato post-harvest activities in modified pig-raising and starch/noodle processing may lead to a substantial increase in household income. Comparing the local pig growth with a recently conducted pig trial in Vietnam, the results show that the modified practice generates greater income. A cost-and-profit analysis of starch/noodle processing, estimated from on-going processing activities in other counties in Sichuan, shows added value for each ton of sweetpotato, especially for noodle processing. The potential income gains...
Modifications in design of future projects following-on from CATIE-MIP/AF 6.2.2. Differentiation ... more Modifications in design of future projects following-on from CATIE-MIP/AF 6.2.2. Differentiation of farmers, strategies and training content .
A cluster of small- and medium-sized starch processors in peri-urban Hanoi, Vietnam generate inco... more A cluster of small- and medium-sized starch processors in peri-urban Hanoi, Vietnam generate income and improve the household economy by adding value to cassava and canna roots. Such seasonal and clustered processing activities tend to generate more waste than can be utilized or managed. A situation analysis showed that cassava and canna starch processing activities in three villages generated almost
Previous studies have determined the potential location for sweetpotato flour processing and also... more Previous studies have determined the potential location for sweetpotato flour processing and also examined the processing procedure necessary to produce marketable and profitably flour. This paper reports the second technical trial in which conversion rate and flour quality (i.e., whiteness and coarseness) were further investigated by selecting for sweetpotato roots with high dry matter content and modifying processing procedure (i.e.,
CIAT's Rural Agroenterprise Development Project has taken a territorial approach to equitable... more CIAT's Rural Agroenterprise Development Project has taken a territorial approach to equitable, market-oriented, agriculturally based development in the rural tropics, with the objectives of poverty reduction (through income generation) and environmental sustainability. A four-stage methodology has evolved based on experiences in South America, Africa and, more recently, S.E. Asia. These stages are: 1. Formation of working groups at the level
In an attempt to avoid food shortages and to reduce price vola tility within the agricultural mar... more In an attempt to avoid food shortages and to reduce price vola tility within the agricultural marketplace, Governments in many countries have taken it upon themselves to regulate the market, setting up support
In an attempt to avoid food shortages and to reduce price vola tility within the agricultural mar... more In an attempt to avoid food shortages and to reduce price vola tility within the agricultural marketplace, Governments in many countries have taken it upon themselves to regulate the market, setting up support
The increasing demand for meat in Hanoi, Vietnam, requires pig-raising to become more efficient. ... more The increasing demand for meat in Hanoi, Vietnam, requires pig-raising to become more efficient. Sweetpotato vines are an important feed for pigs, but labor requirements for preparation are heavy, and storage is difficult. Already Vietnamese farmers, mostly women, spend up to two hours every day chopping sweetpotato vines to feed their one or two pigs, and as the numbers of
Some authors have noted that farmer participatory research (FPR), the collaboration of scientists... more Some authors have noted that farmer participatory research (FPR), the collaboration of scientists and farmers in agricultural research and development, has failed to produce many agronomic research results. Jeffery W. Bentley has identified seven basic problems that limit scientists' ability to collaborate with farmers: poor access, different observational and experimental styles, different economies and environmental mosaics, time constraints, and social distance. This article, based on the authors' experience with FPR in China, Indonesia, Madagascar, and Vietnam, describes attempts to overcome these barriers through a variety of on-farm interventions. More importantly, the authors explain how these apparent obstacles to FPR can actually be exploited as opportunities to enhance the research process, and thus the results, for the benefit of both farmers and scientists.
An on-farm pig feed trial in Thanh Hoa Province of Northern Vietnam was conducted to find ways to... more An on-farm pig feed trial in Thanh Hoa Province of Northern Vietnam was conducted to find ways to improve the current sweet potato-pig system by prescribing balanced daily feed ration, replacing sweet potato roots with dried chips, and adding greater quantities of protein supplement. The feed formulation and treatments were based on the results of a survey of current practices in order to take into consideration the local situation. The on-farm trial was conducted in six households under the supervision of the Vietnamese government extension service. The results of the trial indicate that the balanced daily ration and dried sweet potato chips improved pig growth, and the dried chips promoted both better growth and required lower cost per kilogram of weight gain. Greater quantities of protein supplement, on the other hand, added substantial extra cost, which led to low profitability. These results are being tested by a follow-up validation trial.
Sweetpotato has become the most important crop in Uganda in recent years following the devastatio... more Sweetpotato has become the most important crop in Uganda in recent years following the devastation of cassava harvests by viral epidemics. Throughout the country the primary function of sweetpotato is food security, but that does not diminish its potential for generating income through appropriate post-harvest utilization. This paper examines related aspects of sweetpotato production, processing, utilization, and marketing to set post-harvest research strategies for addressing local food security and income generation. The findings indicate the following strategy setting. First of all, to ensure a steady supply of this important staple, research efforts need to focus on planting material, appropriate technology for processing, and storage of fresh or processed roots. Secondly, improvement of the current sweetpotato-pig system exhibits great potential for generating higher rural incomes through increased pig growth. Thus, detailed recommendations for pig-feed trials, based on local c...
Dai Peters is currently working on research related to sweetpotato postharvest utilization in the... more Dai Peters is currently working on research related to sweetpotato postharvest utilization in the context of rural
This paper reports the preliminary results of an investigation into agrifood-based enterprise clu... more This paper reports the preliminary results of an investigation into agrifood-based enterprise clusters in two communes in Hoai Due District of Ha Tay province, Vietnam. Dong Lieu commune specialises in root crop processing, and Cat Que in piglet production and marketing. This project has been implemented in the context of a Strategic Initiative on Urban and Peri-Urban Agriculture (SIUPA) of the CGIAR, in collaboration with the Rural Agroenterprise Development Project of CIAT and Vietnam national research institutions and local government authorities in Ha Tay. The cassava and canna processing cluster in Dong Lieu is a complex system with many small household enterprises trading fresh roots, starch, and products derived from them to traditional and novel (industrial, high growth) markets. The pig production and marketing commune in Cat Que is less complex, but still concentrated and highly specialised in raising piglets from 6 kg to approximately 27 kg within 45-60 days. Both commune...
Uganda is the largest sweetpotato producer in Africa and in most areas of the country, it plays a... more Uganda is the largest sweetpotato producer in Africa and in most areas of the country, it plays and important role of providing food security in areas where it is cultivated (Bashaasha et al.1995). This role has become more prominent in areas where cassava, the second most important crop next to banana, has been destroyed by the African Mosaic virus. Bashaasha et al. (1995) identified sweetpotato post-harvest constraints such as lack of markets, poor storage facilities, limited use opportunities, among other agronomic constraints to production, as some of the major obstacles to sweetpotato development. These indicate the need to examine sweetpotato post-harvest strategies to overcome the obstacles and address the issue of food security in Uganda.
An analysis of the household economy of a sweetpotato-producing county in Sichuan Province of Chi... more An analysis of the household economy of a sweetpotato-producing county in Sichuan Province of China shows that sweetpotato is currently under-utilized in an inefficient sweetpotato-pig feed system. Meanwhile, poverty drives many young men and women to seek employment opportunities in major coastal cities far from home. This paper reviews the contributions of sweetpotato, pigraising, and migration income in the household economy in order to investigate whether sweetpotato post-harvest activities in modified pig-raising and starch/noodle processing may lead to a substantial increase in household income. Comparing the local pig growth with a recently conducted pig trial in Vietnam, the results show that the modified practice generates greater income. A cost-and-profit analysis of starch/noodle processing, estimated from on-going processing activities in other counties in Sichuan, shows added value for each ton of sweetpotato, especially for noodle processing. The potential income gains...
Modifications in design of future projects following-on from CATIE-MIP/AF 6.2.2. Differentiation ... more Modifications in design of future projects following-on from CATIE-MIP/AF 6.2.2. Differentiation of farmers, strategies and training content .
A cluster of small- and medium-sized starch processors in peri-urban Hanoi, Vietnam generate inco... more A cluster of small- and medium-sized starch processors in peri-urban Hanoi, Vietnam generate income and improve the household economy by adding value to cassava and canna roots. Such seasonal and clustered processing activities tend to generate more waste than can be utilized or managed. A situation analysis showed that cassava and canna starch processing activities in three villages generated almost
Previous studies have determined the potential location for sweetpotato flour processing and also... more Previous studies have determined the potential location for sweetpotato flour processing and also examined the processing procedure necessary to produce marketable and profitably flour. This paper reports the second technical trial in which conversion rate and flour quality (i.e., whiteness and coarseness) were further investigated by selecting for sweetpotato roots with high dry matter content and modifying processing procedure (i.e.,
CIAT's Rural Agroenterprise Development Project has taken a territorial approach to equitable... more CIAT's Rural Agroenterprise Development Project has taken a territorial approach to equitable, market-oriented, agriculturally based development in the rural tropics, with the objectives of poverty reduction (through income generation) and environmental sustainability. A four-stage methodology has evolved based on experiences in South America, Africa and, more recently, S.E. Asia. These stages are: 1. Formation of working groups at the level
In an attempt to avoid food shortages and to reduce price vola tility within the agricultural mar... more In an attempt to avoid food shortages and to reduce price vola tility within the agricultural marketplace, Governments in many countries have taken it upon themselves to regulate the market, setting up support
In an attempt to avoid food shortages and to reduce price vola tility within the agricultural mar... more In an attempt to avoid food shortages and to reduce price vola tility within the agricultural marketplace, Governments in many countries have taken it upon themselves to regulate the market, setting up support
The increasing demand for meat in Hanoi, Vietnam, requires pig-raising to become more efficient. ... more The increasing demand for meat in Hanoi, Vietnam, requires pig-raising to become more efficient. Sweetpotato vines are an important feed for pigs, but labor requirements for preparation are heavy, and storage is difficult. Already Vietnamese farmers, mostly women, spend up to two hours every day chopping sweetpotato vines to feed their one or two pigs, and as the numbers of
Some authors have noted that farmer participatory research (FPR), the collaboration of scientists... more Some authors have noted that farmer participatory research (FPR), the collaboration of scientists and farmers in agricultural research and development, has failed to produce many agronomic research results. Jeffery W. Bentley has identified seven basic problems that limit scientists' ability to collaborate with farmers: poor access, different observational and experimental styles, different economies and environmental mosaics, time constraints, and social distance. This article, based on the authors' experience with FPR in China, Indonesia, Madagascar, and Vietnam, describes attempts to overcome these barriers through a variety of on-farm interventions. More importantly, the authors explain how these apparent obstacles to FPR can actually be exploited as opportunities to enhance the research process, and thus the results, for the benefit of both farmers and scientists.
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