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RESEARCH ARTICLE

Production and quality of the silage of sorghum intercropped with Paiaguas palisadegrass in different forage systems and at different maturity stages

Suelen Soares Oliveira A , Kátia Aparecida de Pinho Costa A B , Wender Ferreira de Souza A , Charles Barbosa dos Santos A , Daniel Augusto Alves Teixeira A and Victor Costa e Silva A
+ Author Affiliations
- Author Affiliations

A Goiano Federal Institute (Instituto Federal Goiano), Rio Verde Campus, Rodovia Sul Goiana, km 01, Zona Rural, CEP 75.901-970, Rio Verde-Goiás, Brazil.

B Corresponding author. Email: katia.costa@ifgoiano.edu.br

Animal Production Science 60(5) 694-704 https://doi.org/10.1071/AN17082
Submitted: 12 February 2017  Accepted: 28 August 2019   Published: 23 January 2020

Abstract

As part of the search for sustainability in production systems, systems of annual crops intercropped with tropical forage plants have recently been used for silage production. Therefore, in the present study we aimed to evaluate the dry matter yield, fermentative parameters and nutritional value of the silage of sorghum intercropped with Paiaguas palisadegrass in different forage systems and maturity stages in a crop-livestock integration system. The experiment was conducted at the Goiano Federal Institute (Instituto Federal Goiano), Rio Verde Campus, Goiás, Brazil, in a completely randomised design with four replications in a 5 × 3 factorial arrangement with five forage systems (monocropped sorghum, monocropped Paiaguas palisadegrass, sorghum row intercropped with Paiaguas palisadegrass, sorghum inter-row intercropped with Paiaguas palisadegrass and sorghum oversown and intercropped with Paiaguas palisadegrass) and three maturity stages of the sorghum (milky, soft dough and hard dough). The results show that for all sowing methods, the silages of the intercropping systems harvested in the hard-dough stage provide a higher yield per area than did the monocropped sorghum and Paiaguas palisadegrass. The intercropping of sorghum with Paiaguas palisadegrass in crop-livestock integration systems could become an important option for the production of silage because intercropping minimises the inconveniences resulting from the fermentation process of the silage of monocropped grasses and improves the quality of the silage. These findings show this intercropping method to be advantageous strategy for the production of supplemental roughage in addition to contributing to the formation of pasture after the crops have been harvested for ensiling.

Additional keywords: Brachiaria brizantha, crop-livestock integration system, ensiling, fermentation, nutritional value.


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