Replacement of corn by Tucumã meal in diets for commercial laying hens
Abstract
The present study aimed to evaluate the replacement of corn by tucumã meal in diets for commercial laying hens on performance, egg quality and economic viability analysis. The experimental period during 84 days, with four cycles of 21 days each. 180 Hisex White laying hens (25 weeks-of-age) were used. The experimental method completely randomized with the treatments constituted by six levels of corn replacement by tucumã meal (0, 20, 40, 60, 80 and 100%) and five replicates of six birds each. Were evaluated the performance, egg quality and economical viability. Data collected were subjected to polynomial regression (P ≤ 0.05) after a significant ANOVA result. Feed intake raised (P < 0.05) from 60% replacement of corn by tucumã meal in the diets. After this level, the feed intake and egg production drastically reduced. These results directly reflect on feed conversion kg.kg-1 and kg.dz-1. All results of egg mass from birds fed tucumã meal were lower than control diet. Egg weight and %shell reduce from 40% replacement corn by tucumã meal. Up to this level, there was an increased in %yolk and %albumen, albumen height, yolk height and yolk color. In 100% of replacement, there was a considerable reduction on egg quality. The replacement of corn by tucumã meal affected all parameters of economic viability. The results indicate that it's possible replaced 60% of corn by tucumã meal in diets for commercial laying hens, without negative effect on performance and egg quality, and presenting good economic viability. 100% of replacement present worse results. The results of other levels did not differ among themselves.References
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