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Effect of Exogenous Fibrolytic Enzymes Supplementation or Functional Feed Additives on In Vitro Ruminal Fermentation of Chemically Pre-Treated Sunflower Heads
| Content Provider | MDPI |
|---|---|
| Author | Jabri, Jihene Ammar, Hajer Abid, Khalil Beckers, Yves Yaich, Héla Malek, Atef Rekhis, Jamel Morsy, Amr Salah Soltan, Yosra Ahmed Soufan, Walid Almadani, Mohamad Isam Chahine, Mireille Marti, Mario E. De Haro Okla, Mohammad K. Kamoun, Mohamed |
| Copyright Year | 2022 |
| Description | This study aims to provide possible utilization of sunflower head byproduct (SFH) as a feedstuff by implementing chemical pretreatments (4% sodium hydroxide $(SFH_{NaOH}$) or 4% urea $(SFH_{urea}$) and supplementation with either exogenous fibrolytic enzymes (EFE) or functional feed additive (FFA). The experimental EFE was a complex (1:1, v/v) of two enzyme products with high activity of β-1,3-1,4-glucanase and endo-1,4-β-D-xylanase and applied at 0 $(SFH_{out}$), 1, 2, 5, and 10 µL/ gdry matter, while FFA was a fermentation byproduct rich in cellulase and xylanase activities, applied at 0 $(SFH_{out}$), 0.5, 1, 2, and 4 mg/g DM. $SFH_{urea}$ had the highest (p < 0.05) crude protein (CP) content compared to other SFH substrates. Linear enhancements (p < 0.05) in kinetics of gas production (GP), metabolizable energy (ME), organic matter digestibility (OMD) and total short-chain fatty acids (SCFAs) concentrations were observed for all SFH substrates supplemented with EFE. The $SFH_{out}$ had the highest (p < 0.05) potential GP, maximum rate (Rmax) of GP, ME, OMD and SCFAs. Supplementation of EFE was more pronounced than FFA in affecting the kinetic parameters of in vitro GP for all SFH substrates. $SFH_{out}$ supplemented with EFE seems to be the most promising substrate to enhance microbial fermentation in vitro. |
| Starting Page | 696 |
| e-ISSN | 20770472 |
| DOI | 10.3390/agriculture12050696 |
| Journal | Agriculture |
| Issue Number | 5 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-14 |
| Access Restriction | Open |
| Subject Keyword | Agriculture Agriculture and Animal Production Sunflower Head Chemical Composition Digestibility in Vitro Chemical Pretreatments Exogeneous Enzymes Feed Additive |
| Content Type | Text |
| Resource Type | Article |
