Starch degradability of dry and ensiled high-moisture grains of corn hybrids with different textures at different grinding degrees

Authors

  • Wagner dos Reis Escola Superior de Agronomia de Paraguaçu Paulista, Paraguaçu Paulista, SP
  • Ciniro Costa Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Melhoramento e Nutrição Animal, Botucatu, SP
  • Paulo Roberto de Lima Meirelles Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Melhoramento e Nutrição Animal, Botucatu, SP
  • Marina Gabriela Berchiol da Silva Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP
  • Marco Aurélio Factori Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP
  • Cristiano Magalhães Pariz Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP
  • Simony Alves Mendonça Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP
  • Erikelly Aline Ribeiro de Santana Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Botucatu, SP

Keywords:

high moisture grain, nutritive value, particle size, ruminal degradation

Abstract

This research evaluated corn grains with flint and dent texture (ensiled high-moisture or dried), submitted to grinding degrees, using the in situ ruminal degradation technique. Three rumen canulated adult sheeps were used in a complete randomized design, using a factorial outline 2 x 2 x 3, with two corn hybrids (flint and dent texture), two conservation methods (ensiled high-moisture and dry) and three grinding degress (whole, coarsely and finely ground, corresponding to the sieve of 12; 10 and 8 mm). Starch soluble fraction (A) of the dent hybrid ensiled corn grains was greater comparing to the dry materials and in both conservation forms this fraction was reduced in the flint texture hybrid, while the insoluble fraction potentially degradable (B) the opposite occurred. The degradation potential was higher in grains ensiled in two textures. The ensiled allowed more starch effective degradation in relation to dry grain in two textures and the grains dent texture hybrid also increased such degradation in both conservation methods. The dent texture and the ensiled high-moisture grains proved the best option considering the starch degradability. Regardless of the conservation forms, the grains of corn hybrid flint texture should be finely ground, for providing higher ruminal degradation, while for the dent texture hybrid, the coarsely and whole grinding are the most suitable for ensiled and dry grain, respectively.

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Published

2011-02-12

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Starch degradability of dry and ensiled high-moisture grains of corn hybrids with different textures at different grinding degrees. (2011). Bulletin of Animal Husbandry, 68(2), 139-149. http://bia.iz.sp.gov.br/index.php/bia/article/view/1049

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