Ciência e Agrotecnologia
On-line version ISSN 1981-1829
COUTO FILHO, Cristovão Colombo de Carvalho et al. Quality of mango residue silage with different additives. Ciênc. agrotec. [online]. 2007, vol.31, n.5, pp. 1537-1544. ISSN 1981-1829. http://dx.doi.org/10.1590/S1413-70542007000500040.
With the objective to evaluate the quality of mango (Mangifera indica L.) residue silage in mixture with different additives at growing levels of addition, this study was undertaken. The experimental design utilized was the completely randomized, with three replicates. The treatments were arranged in a factorial scheme (4 x 3) + 1 type and the additives being four (ground ears with husks (GEWH), bean straw (BS), corn cob (CC) and coffee hull (CH)) at three levels of addition (10, 20 and 30%) and a control treatment (ensiled unmixed mango residue). The experimental material was ensiled in PVC silos, fitted with a "Bunsen" type valve, with a capacity of about 3 kg each. All the additives utilized raised the DM contents of the silages. As the levels of addition of the additives were increased, there was a reduction in the values of buffering power (PT). The values of pH and ammoniac nitrogen (N-NH3 /%total N) were maintained within the indicative standard of a goof fermentative process. The fermentation standard of silages with additives was satisfactory with no damage in their quality. The additives GEWH, BS or CH may be added to the process of ensiling the mango residue at the levels of addition of 20 or 30%, to improve its fermentative standard for silages of good quality.
Keywords : Agroindustrial residue; Mangifera indica; additives; silage quality.