Biological titrition of Thai cassava root products of various quality grades with broiler chicks.
1978
Jowaman Khajarern | Terapuntuwat S. | Patanakulchai V.
Four experiments, including 4132 broiler chicks, have been conducted to determine the biologically-tested nutritive value of cassava products of various processing methods and known chemical composition. Maize-based diets were used as the control, and in one case, the commercial diets from a company were used as the second controlled treatment. Cassava chip was a poorer energy source for young chicks than the pellet. The previously-washed and rapidly-dried chip was not a consistently superior energy source for broiler when compared to other products conventionally prepared in Thailand. The former was revealed to contain a higher HCN than the latter. The cyanide presented might be the major cause of the decreased performance of the chicks. This suggested further investigation on the ralation of drying period to the hydrocyanic content. The maize diets gave a comparable chick performance to the cassava diets, but were inferior to the commercial ones. This suggests the presence of some growth inhibiting factors in the cereal and should be clarified. Grading of cassava according to processing method was not practical and was to be adjusted.
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