Effects of the inclusion of glycerin in diets containing 30 or 70% roughage on feed disappearance and digestibility

Authors

  • Antonio Carlos Homem Junior Universidade Estadual Paulista
  • Jane Maria Bertocco Ezequiel Universidade Estadual Paulista
  • Leonardo Fernandes Cremasco Universidade Estadual Paulista
  • Marco Túlio Costa Almeida Universidade Estadual Paulista
  • Josimari Regina Paschoaloto Universidade Estadual Paulista
  • André Pastori D'Áurea Universidade Estadual Paulista
  • Henrique Leal Perez Universidade Estadual de Maringá

DOI:

https://doi.org/10.5433/1679-0359.2018v39n4p1717

Keywords:

INDF, Glycerol, Ingredients, In vitro, In vivo, Total ration.

Abstract

The objective of this study was to evaluate in vitro nutrient disappearance and in vivo nutrient digestibility of cattle diets containing 70 or 30% roughage, with and without glycerin supplementation. Four Nellore cattle were used in the study based on a 4 × 4 Latin Square design in a 2 × 2 factorial arrangement. Inclusion of glycerin and roughage proportion did not affect the nutrient disappearance of each ingredient (P > 0.05). Regardless of the inclusion of glycerin, a reduction in the proportion of roughage led to an increase (P < 0.05) in DMDis (64 vs. 72%), NDFDis (41 vs. 54%), and ADFDis (31 vs. 44%) of the total rations. Inclusion of glycerin resulted in an increase (P < 0.05) in DMD (70 vs. 62%) and a reduction (P < 0.05) in CPD (32 vs. 38%) and STD (82 vs. 74%). The diet containing 30% roughage led to higher (P < 0.05) DMD (67 vs. 65%) and CPD (35 vs. 33%) in comparison with the 70% roughage diet, but did not differ (P > 0.05) in STD (78%). Inclusion of glycerin at 20% of the total DM increased the utilisation of dietary DM without affecting the fibrous fraction of the diet. Glycerin supplementation in diets containing 70% roughage improves neutral detergent fibre digestibility.

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Author Biographies

Antonio Carlos Homem Junior, Universidade Estadual Paulista

Dr. em Zootecnia, Universidade Estadual Paulista, FCAV, Jaboticabal, SP, Brasil.

Jane Maria Bertocco Ezequiel, Universidade Estadual Paulista

Profª, FCAV, Jaboticabal, SP, Brasil.

Leonardo Fernandes Cremasco, Universidade Estadual Paulista

Zootecnista, FCAV, Jaboticabal, SP, Brasil.

Marco Túlio Costa Almeida, Universidade Estadual Paulista

Discente, Curso de Doutorado do Programa de Pós-Graduação em Zootecnia, FCAV, Jaboticabal, SP, Brasil.

Josimari Regina Paschoaloto, Universidade Estadual Paulista

Dra em Zootecnia, Universidade Estadual Paulista, FCAV, Jaboticabal, SP, Brasil.

André Pastori D'Áurea, Universidade Estadual Paulista

Dr. em Zootecnia, Universidade Estadual Paulista, FCAV, Jaboticabal, SP, Brasil.

Henrique Leal Perez, Universidade Estadual de Maringá

Prof., Universidade Estadual de Maringá, UEM, Maringá, PR, Brasil.

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Published

2018-08-02

How to Cite

Homem Junior, A. C., Ezequiel, J. M. B., Cremasco, L. F., Almeida, M. T. C., Paschoaloto, J. R., D’Áurea, A. P., & Perez, H. L. (2018). Effects of the inclusion of glycerin in diets containing 30 or 70% roughage on feed disappearance and digestibility. Semina: Ciências Agrárias, 39(4), 1717–1724. https://doi.org/10.5433/1679-0359.2018v39n4p1717

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