Bacterial Abundance, Fermentation Pattern, and Chemical Composition of Oat Haylage Are Altered by the Forage Dehydration Method

André Martins de Souza (), Mikael Neumann, Odimari Pricila Prado Calixto, Admilton Gonçalves de Oliveira Júnior, Ellen Baldissera, Nicolli Soethe Mokochinski, Livia Alessi Ienke and Valter Harry Bumbieris Junior
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André Martins de Souza: Department of Animal Science, State University of Londrina, Londrina 86057-970, Brazil
Mikael Neumann: Department of Veterinary Medicine, Midwestern Parana State University, Guarapuava 85040-167, Brazil
Odimari Pricila Prado Calixto: Department of Animal Science, State University of Londrina, Londrina 86057-970, Brazil
Admilton Gonçalves de Oliveira Júnior: Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil
Ellen Baldissera: Department of Veterinary Medicine, Midwestern Parana State University, Guarapuava 85040-167, Brazil
Nicolli Soethe Mokochinski: Department of Veterinary Medicine, Midwestern Parana State University, Guarapuava 85040-167, Brazil
Livia Alessi Ienke: Department of Veterinary Medicine, Midwestern Parana State University, Guarapuava 85040-167, Brazil
Valter Harry Bumbieris Junior: Department of Animal Science, State University of Londrina, Londrina 86057-970, Brazil

Agriculture, 2025, vol. 15, issue 19, 1-18

Abstract: The present study aimed to evaluate the aerobic stability, fermentation profile, microbiological diversity, and bromatological composition of the haylage of white oats obtained using three dehydration methods: (1) Mechanical (MEC); (2) Mechanical + Bacterial chemical compound (MEC + BCC); and (3) Chemical (CHE), where Glyphosate was used as a desiccant. The haylage made with the forage dehydrated by the mechanical method showed lower aerobic stability (69.20 h) and a higher cumulative temperature from 0 to 84 h and from 0 to 168 h (12.73 °C and 25.91 °C, respectively). The haylage made with Glyphosate-desiccated forage had higher concentrations of acetic acid (3.96 g kg −1 ) and isobutyric acid (0.78 g kg −1 ). The microbiological diversity and richness did not differ among the haylages produced. However, the relative abundance of the genera Pantoea and Lactobacillus was higher in the haylage made with Glyphosate-desiccated forage. The bacterial chemical compound guaranteed a haylage with lower lignin content (31.97 g kg −1 ), lower acid detergent nitrogen (7.54 g kg −1 ), and higher hemicellulose (211.72 g kg −1 ). The haylage made from dehydrated forage by the Mechanical + Bacterial Chemical Compound methods presented a better fermentation pattern and had lower fermentation losses, and its bromatological quality was superior to the others.

Keywords: aerobic stability; homofermentative bacteria; lactic acid; Lactobacillus (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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