In-situ dry matter degradability of maize stubble with tree fruit meal diets

In tropical and subtropical áreas, one of the predominant activities is livestock production, especially extensive livestock farming, wich bases its diet in grasses and forage. However, these are scarce in the dry season, so the producer is forced to use other souces of food such agricultural waste, including corn stubble, wich is abundant, but low in quality and poorly digestible, so the objetive of this study was to evaluate the in situ degradability of the dry matter of corn stabble Zea mays (Zm),with diets of fruit meal of tree species: Acacia pennatula (Ap) Caesalpinia coriaria (Cc), Senna atomaria (Sa), Guazuma ulmifolia (Gu) y Zyziphus mexicana (Zm). A proximaly chemical analysis and fiber fractions were carried out: neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose, cellulose and lignin. For the kinetic test a Holstein cow of 600 kg was used, with incubation times of 0, 4, 8, 12, 24, 36, 48 and 72 hours, where each of the flours from the fruits of the tree species were included. A completely randomized desing was used, with a divided plot arrangement, the comparison of means was using the Tukey test (P<0.05). The results indicate a dry matter content of 90.07% and crude protein of 5.35%. Dry matter digestibility had positive and negative effects with the diets of tree species. It is concluded that the incorporation of flour from fruits of tree species improved up to 17 percentage units and that the best diets were flours from fruits of tree species (Ap) and (Sa).