Nutritive value of elephant grass hay ammoniated by urea

Authors

  • Leonardo Fiusa de Morais Universidade Federal Rural do Rio de Janeiro
  • João Carlos de Carvalho Almeida Universidade Federal Rural do Rio de janeiro
  • Delci de Deus Nepomuceno Universidade Federal Rural do Rio de janeiro
  • Rafaela Scalise Xavier Freitas Universidade Federal Rural do Rio de janeiro
  • Bárbara Maria Gomes de Melo Universidade Federal Rural do Rio de janeiro
  • Joice Fátima Moreira Silva Universidade Federal Rural do Rio de janeiro

DOI:

https://doi.org/10.14393/BJ-v36n5a2020-41135

Keywords:

Fibra., Forragens de baixa qualidade., Pennisetum purpureum., Produção de gás in vitro., Tratamento químico.

Abstract

The aim of this study was to evaluate the effect of ammoniation by urea on the nutritional value of elephant grass hay harvested after flowering. A completely randomized design, in double factorial designs with an additional treatment: 4 urea doses (2, 4, 6 and 8%) x 2 treatment periods (30 and 45 days) + 1 (Control) with four replicates each, was employed. Dry matter, ash, ether extract, neutral detergent fiber, acid detergent fiber, cellulose, lignin, neutral detergent fiber corrected for the ash and the protein, total nitrogen, acid detergent insoluble nitrogen, neutral detergent insoluble nitrogen, non-protein nitrogen, in vitro gas production and carbohydrates fractionation were analyzed. The treatments influenced the contents of DM, EE, NDF, ADF, lignin, cellulose, NDFap, fraction A + B1, fraction B2, fraction C, TN, NPN, ADIN, NDIN, L and Vf2. There was a positive linear effect of urea dose for NDF, ADIN, NDIN and L, positive linear effect on fraction A + B1, NT and NPN, and positive quadratic effect for Vf2, with absolute maximum point of 4.5%. Elephant grass hay harvested after flowering has its nutritional value improved, with a minimum dose of 4.5% urea on a dry matter basis.

Downloads

Download data is not yet available.

Downloads

Published

2020-08-13

How to Cite

DE MORAIS, L.F., ALMEIDA, J.C. de C., NEPOMUCENO, D. de D., FREITAS, R.S.X., DE MELO, B.M.G. and SILVA, J.F.M., 2020. Nutritive value of elephant grass hay ammoniated by urea. Bioscience Journal [online], vol. 36, no. 5, pp. 1498–1506. [Accessed29 November 2022]. DOI 10.14393/BJ-v36n5a2020-41135. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/41135.

Issue

Section

Agricultural Sciences