Influence of the phenological stage at harvest of sesame (Sesamum indicum) on silage quality

Influence of the phenological stage at harvest of sesame (Sesamum indicum) on silage quality

The objective of this study was to evaluate the effect of harvesting the sesame plant at different phenological stages on silage quality. A completely randomized design with five replications was adopted. The treatments were different phenological stages of the plant at harvest (WOP = Without pod, W...

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Bibliographic Details
Published in:Animal feed science and technology Vol. 281; p. 115102
Main Authors: Silva, Rosimeire Pereira da, Nascimento, Keuven dos Santos, Sousa, Alex Rodrigues de, Medeiros, Otávio Tavares, Macêdo, Mayra Fernanda Alves, Dias-Silva, Tairon Pannunzio, Edvan, Ricardo Loiola, Araújo, Marcos Jácome de
Format: Journal Article
Language:English
Published: Elsevier B.V 01-11-2021
Subjects:
Fermentation losses
Forage conservation
in situ degradability
Semi-arid
MTG
St
ADF
FMi
WFSO
DM
Semi-arid
DMEF
NFC
WSf
WSi
NDF
TCHO
WP
MG
OM
Forage conservation
ED
TDN
EE
MM
UV
GL
GMEF
EL
DMR
Fermentation losses
CP
PD
WFSC
WOP
TN
FMf
in situ degradability
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Summary:The objective of this study was to evaluate the effect of harvesting the sesame plant at different phenological stages on silage quality. A completely randomized design with five replications was adopted. The treatments were different phenological stages of the plant at harvest (WOP = Without pod, WP = With pod, MG = Milky grain, MTG = Mature grain). The chemical composition was determined after opening the silos. Fermentation characteristics were evaluated by measuring pH, N-NH3 concentration, organic acid contents (acetic, butyric, propionic and lactic), quantification of losses through gases and effluents, dry matter recovery (DMR) and evaluation of the aerobic stability of the silage. Dry matter in situ degradability (DM) was evaluated using two rumen-cannulated sheep. All data were analyzed through mixed models. The means of chemical composition, fermentation characteristics and losses were compared by the Tukey's adjusted test and significant differences were declared when P ≤ 0.05. The chemical composition of the sesame silage was affected by the plant's phenological stage at harvest. There was significant effect (P < 0.05) on all chemical composition variables evaluated in this study. There was no effect (P > 0.05) on fermentative characteristics. Losses through gases and effluents reduced at older phenological stages of the sesame plant. The highest DMR (949.7 g/kg) was observed in the silage of plants harvested at the MTG stage. The most stable silages were those made with plants harvested at the WOP stage (64 h), followed by MG (48 h). The highest levels of degradation of the soluble fraction were found in the silage of plants harvested at WOP (366.3 g/kg) and MG (366.1 g/kg) stages, respectively. The highest potential degradability was found in the silage of plants harvested at the MTG stage (552.7 g/kg), which consequently had the shortest lag time (6.60 h). The effective degradability at different passage rates 20, 50, 80 g/ kg /h was higher in the silage of plants harvested at WOP and MG stages. The sesame plant can be harvested at the phenological stages with pod, milky grain and mature grain for silage making. •Sesame can be an alternative to silage production of conventional crops.•Sesame can be harvested for silage at all phenological stages after pod deposition.•Sesame harvested at the stage of mature grains has better characteristics to silage.
ISSN:0377-8401
1873-2216
DOI:10.1016/j.anifeedsci.2021.115102