PROTEIN FRACTIONATION AND DIGESTIBILITY OF MILLET GENOTYPES FOR GRAZING MANAGED AT DIFFERENT CUTTING HEIGHTS

Authors

  • Hélida Fernandes Leão Instituto Federal do Triângulo Mineiro
  • Kátia Aparecida de Pinho Costa Instituto Federal Goiano, Campus Rio Verde
  • Fernando José dos Santos Dias Unversidade Federal de Goiás, Campus Jataí
  • Eduardo da Costa Severiano Instituto Federal Goiano, Campus Rio Verde
  • Patrícia Soares Epifanio Instituto Federal Goiano, Campus Rio Verde

Keywords:

Ruminal Degradation. Pasture Management. Forage Quality. Pennisetum Glaucum.

Abstract

This study was developed with the purpose of evaluating the protein fractionation and in vitro digestibility of the dry matter (IVDMD) of millet genotypes for grazing, managed at different heights and subjected to several cuts. The experiment had a randomized complete block design, with repeated measures over time, four replications in a 3x3 factorial arrangement, with three cultivars of millet (ADR 500, LAB 1542 and LAB 1838) and three average cutting heights (60; 80 and 100 cm). Evaluations were undertaken through cuts in the same plots during four months. Results showed that millet genotypes were similar as for the values of protein fractionation and IVDMD. The forage quality is affected by the management of cutting height, thereby it is not recommended to manage millet genotypes at 100 cm height for providing lower fraction A, B1, B2 and digestibility and higher fraction B3 and C of the forage.

Author Biographies

  • Hélida Fernandes Leão, Instituto Federal do Triângulo Mineiro
    Professora do Instituto Federal do Triângulo Mineiro
  • Kátia Aparecida de Pinho Costa, Instituto Federal Goiano, Campus Rio Verde
    Zootecnista, Doutora em Ciência do Solo, Professora dos Programas de Pós-Graduação em Ciências Agrárias e Zootecnia do Instituto Federal Goiano, Campus Rio Verde
  • Fernando José dos Santos Dias, Unversidade Federal de Goiás, Campus Jataí
    Professor do Programa de Pós-Graduação em Produção Vegetal da Unversidade Federal de Goiás, Campus Jataí
  • Eduardo da Costa Severiano, Instituto Federal Goiano, Campus Rio Verde
    Professor dos Programas de Pós-Graduação em Ciências Agrárias e Zootecnia do Instituto Federal Goiano, Campus Rio Verde
  • Patrícia Soares Epifanio, Instituto Federal Goiano, Campus Rio Verde
    Doutorando do Programa de Pós-Graduação em Ciências Agrárias do Instituto Federal Goiano, Campus Rio Verde

Published

31-03-2014

Issue

Section

Zootechnics