Estudo de níveis de substituição do milho pelo pseudo-fruto desidratado do cajueiro (Anacardium occidentale, L.) em rações para frangos de corte.

Abstract

Faur experiments were canducted at the poultry facilities of the Department of Animal Science at the Universidade Federal da Ceará, Brasil, during the period of August 18th of 1983 to July 28th of 1979, with the objective of replacing partially and totally the corn by the dehydrated cashew apple (Anacardium occidentale, L.) a by-product of juice industry in rations for broilers. Each experiment lasted 28 days. In each trial 192 one day old male chicks of the brand "Hubbard" were utilized. The experiments followed a completly randomized design with six treatments and four replications with eight birds each. The data were submitted to the analysis of variance and the significative differences among the treatment means were detected by Duncan test. The percentages of replacement of corn by cashew apple tested in alI the four experiments were: 0,0%, 14%, 28,0%, 42,0%, 56,0% and 70,0%. In the first experiment it was tested a plain replacement of corn by dehydrated cashew apple, a juice industry by-product once tasted. In the second trial a source vegetal protein (brewers'yeast) was added to the rations. Crude vegetal oil was added to the rations of the third experiment and the fourth trial rations received both the brewers'yeast and vegetal oil. The results indicated that the plain substitution of corn by cashew, a by-praduct of juice industry, in poultry rations is not possible due to its negatives effects on the gain of weight and feed conversion by the birds. The addition of yeast brewer's dried makes possible that replacement up to the level of 14%. When crude vegetal oil was added to the rations, the cashew, a by-product juice industry, could replace corn up to the level of 42%. Adding yeast brewer's dried and crude vegetal oil the substitution is possible only up to 14%. This results is similar to that obtained when only yeast brewer's dried was used.