Evaluation of the modifications in the chemical composition of natural pasture hay during storage
Abstract
The nutritive value of round bales hay from natural pasture from the Campanha area of Rio Grande of Sul stocked under field conditions were evaluated over a three months period. Three samples from different places in the bale were taken every 28 days: one from the outside of the bale; one from the center and one from the middle space between those two. The following constituents were analyzed: dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), lignin, neutral detergent insoluble protein (NDIP) and acid detergent insoluble protein (ADIP). It was observed an increase in the concentration of NDIP and ADIP (P < 0.05), indicating a decrease in the concentration of available protein of the hay. The samples taken from the outer layer showed higher values for ADIP (P < 0.05). The values of NDIP did not show a variation in relation to the positions in the bale (P > 0.05). It was concluded that the outer layer was more negatively influenced by the period of storage.
Downloads
The authors declare that the work has not been previously published, nor sent simultaneously for publication in another journal and that they agree with the submission, content and transfer of the publication rights of the article in question to the scientific journal Pesquisa Agropecuária Gaúcha - PAG. The authors assume full responsibility for the originality of the article, and may incur on them any charges arising from claims by third parties in relation to the authorship of the article. The full reproduction of the journal's articles in other free-to-use electronic media is permitted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
