Dry matter and protein ruminal degradation and chemical composition in canutillo (Panicum elephantipes) and water hyacinth (Eichhornia crassipes)

  • R. Figallo Universidad Nacional de Rosario, Facultad de Ciencias. Veterinarias. CIUNR. Laboratorio de Bioquímica del Rumen, Cátedra de Química Biológica.
  • N. M. Peronja Universidad Nacional de Rosario, Facultad de Ciencias. Veterinarias. CIUNR. Laboratorio de Bioquímica del Rumen, Cátedra de Química Biológica.
  • A. Pidelo Universidad Nacional de Rosario, Facultad de Ciencias. Veterinarias. CIUNR. Laboratorio de Bioquímica del Rumen, Cátedra de Química Biológica.
  • A. M. Smacchia Universidad Nacional de Rosario, Facultad de Ciencias. Veterinarias. CIUNR. Laboratorio de Bioquímica del Rumen, Cátedra de Química Biológica.

Keywords:

rumen, in sacco, protein, Panicum, Eichhornia

Abstract

The aim of this work was to identify native and naturalized forage species from the islands of the delta of the Paraná River and to study the fractions that are degraded in rumen. Samples of Eichhornia crassipes (Camalote, CA) and Panicum elephantipes (Canutillo, CN) were taken from the Parana islands. Their chemical composition was determined: Dry Matter (DM %), Ethereal Extract (EE), Ashes (A), Crude Fiber (CF), and Crude Protein (CP; N x 6,25) and the rumen degradation kinetics was determined in sacco for (DR) DM and CP. Data were analyzed with ANOVA Scheffe’s test (P > 0.05) and DR adjusted to the following model: DR%= a + b (1 - e-ct), where is a: soluble fraction, b: slow degradable fraction, c: degradation rate, and a+b: potentially degradable fraction. CA showed 58 % less DM, similar EE and 35.5; 14.1 and 30.9 % more A, CF, and CP respectively, than CN. Degradable fractions in rumen were: DM fraction a: 18 and 21.6 and CP: 17.5 and –4 %, DM fraction b: 50.9 and 41.5 and CP: 42.6 and 80.4 %, degradation DM rate: 0.019 and 0.0384 and CP: 0.033 and 0.048 %/h and a+b fraction of DM: 69 and 63.1 and CP: 60.0 and 76.4 in CA and CN, respectively. CA showed a higher solubility and lower fractions of b, c and a + b of protein than CN. Though CN and CA, appear to be an interesting dietary source for ruminants, showed a lower degradability than known cultivated forage species.

Downloads

Download data is not yet available.

References

Acebal M., S. Cechetti, L. Verdura, L. Spiller, F. Calvo & R. Figallo. (2009). Estimación de la digestibilidad en cultivares de alfalfa (Medicago sativa L.) con distintos métodos indirectos. Rev. Arg. Prod. Anim. 29(sup 1): 556-557.

AOAC. 2005. Association of official agricultural chemist. Official Methods of Analysis of AOAC INTERNATIONAL. 18° ED.

Figallo R.M., H.L. Faienza, A. Pidello & A.M. Smacchia 2007. Dry matter ruminal degradation and chemical composition of pasture hays. Biocell. 31(1): 131.

Figallo R.M., H.L Faienza, A. Pidello & A.M. Smacchia 2008a. Dry matter ruminal degradation and chemical composition in pasture. Biocell. 32(3): 24.

Figallo R.M., H.L. Faienza, A. Pidello & A.M Smacchia. 2008b. Dry matter ruminal degradation and chemical composition in residue crop. Biocell. 32(3): 24.

Lahitte H. B. & J.A. Hurrell. 2004. Plantas de la costa. Las plantas nativas y naturalizadas más comunes de la costa del Río Paraná, Isla Martín García y Ribera Platense. Edición 1º. Reimpresión 1. Editorial: L.O.L.A. Buenos Aires.

Meherez A.Z. & E.R. Orskov. 1977. A study of the artificial fibre bag technique for determining the digestibility of feeds in the rumen. J. Agric. Camb. 88: 645.

Orskov E.R. & I. McDonald. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. J. Agric. Camb. 92: 944

Published

2020-03-26

How to Cite

Figallo, R., Peronja, N. M., Pidelo, A., & Smacchia, A. M. (2020). Dry matter and protein ruminal degradation and chemical composition in canutillo (Panicum elephantipes) and water hyacinth (Eichhornia crassipes). Semiárida, 22, 29–34. Retrieved from https://ojs.unlpam.edu.ar/ojs/index.php/semiarida/article/view/4503