Cassava root and leaf flour in poultry feed
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CTA. 1998. Cassava root and leaf flour in poultry feed. Spore 74. CTA, Wageningen, The Netherlands.
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In the Brazilian state of Amazonas, the poultry-farming industry is experiencing a number of difficulties due to high production costs brought about by the expense and scarcity of the raw materials used to make feed for domestic fowl. The main...
In the Brazilian state of Amazonas, the poultry-farming industry is experiencing a number of difficulties due to high production costs brought about by the expense and scarcity of the raw materials used to make feed for domestic fowl. The main ingredient in the feed is maize which, along with soya flour and meat and fish meal, has to be brought in from other parts of the country leading to a consequent rise in production costs. The total or partial replacement of the main ingredients in conventional feed by locally-produced raw materials (in particular cassava, which is a high yield traditional crop) could bring about a substantial reduction in the production costs of feed thereby making local poultry farming economically viable. With this in mind, the CPAA (Forestry Research Centre of Western Amazonia) carried out a research project aimed at: ? Partially replacing maize in poultry feed by whole flour made from the roots (FRIM) and branches (FRM) of the cassava plant; ? Reducing the costs of poultry feed in order to make local poultry-farming economically viable and to enable poultry farmers to produce part of the feed themselves. The upper portion of the cassava foliage (branches and leaves) is used in the manufacture of FRM. This is ground and left out to dry in the sun for two days in layers approximately 6 cm thick; this is turned over twice a day to facilitate dehydration. Cassava roots are used to make FRIM. These are washed and cut in pieces approximately 5 cm long and 1.5 cm wide then left to dry in the sun for four days in layers of 7 kg per m2; they are turned over twice daily for optimum dehydration. Information available on the manufacture and cost of feed for 1 kg of live chicken indicated that the partial replacement of maize in feed was both economically and biologically viable at all stages of the test (1 to 54 days). Up to 45% of whole flour made from cassava roots and 10% made from cassava leaves can be used. With a view to practicality and biology, according to the CPAA, the region's poultry-farmers could replace maize with up to 30% of whole flour made from cassava roots and up to 5% of flour made from cassava leaves in poultry feed. This applies both to the early (1 to 35 days) and final (36 to 54 days) stages of life. Ministério da Agricultura e Reforma Agrária Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA Centro de Pesquisa Agroflorestal da Amazônia Ocidental - CPAA Rodovia AM-010, km 30, CP 319, 69001 Manaus, AM BRAZIL
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