Effect of row spacing and maturity at harvest on the fermentative profile, aerobic stability, and nutritional characteristics of biomass sorghum (BRS 716) silage in the semiarid region of Brazil

Fausto Expedito de Queiroz, Vicente Ribeiro Rocha, Flávio Pinto Monção, João Paulo Sampaio Rigueira, Rafael Augusto da Costa Parrella, Leidy Darmony de Almeida Rufino, Alexandre Soares dos Santos, Matheus Wilson Silva Cordeiro
2021 Revista Brasileira de Zootecnia  
The objective was to evaluate the effects of maturity at harvest and row spacing on fermentative profile, aerobic stability, and nutritional value of biomass sorghum (BRS 716) silage. The experiment was conducted using a split-plot completely randomized block design with three row spacings (45, 70, and 90 cm) and four maturities at harvest (70, 100, 130, and 160 days) and eight replications. Polyvinyl chloride silos of known weight measuring 50 cm length and 10 cm diameter were used for silage
more » ... re used for silage production. Dry matter and total carbohydrate contents of the silage increased linearly, whereas crude protein and ash decreased linearly with maturity at harvest. Row spacing did not influence pH, ammoniacal nitrogen (N-NH 3 ), gas and effluent losses, and dry matter recovery of silage. The concentrations of malic, succinic, and acetic acids and ethanol responded quadratically to maturity at harvest. The levels of neutral detergent fiber, lignin, and indigestible neutral detergent fiber increased linearly with maturity at harvest. Ruminal degradation kinetics of dry matter of biomass sorghum silage was not influenced by row spacing. BRS 716 biomass sorghum should be planted at 70-cm row spacing and harvested at 160 days for silage production based on fermentative profile, dry matter losses, and nutritional characteristics. How to cite: Queiroz, F. E.; Rocha Júnior, V. R.; Monção, F. P.; Rigueira, J. P. S.; Parrella, R. A. C.; Rufino, L. D. A.; Santos, A. S. and Cordeiro, M. W. S. 2021. Effect of row spacing and maturity at harvest on the fermentative profile, aerobic stability, and nutritional characteristics of biomass sorghum (BRS 716) silage in the semiarid region of Brazil. Revista Brasileira de Zootecnia 50:e20200254.
doi:10.37496/rbz5020200254 fatcat:x4c2jwnx4bepdgykbcf6i6ukau