The study report here was undertaken to evaluate the nutritive value of leaves from tannin rich tropical multipurpose tree species with or without various tannin binding agents (TBAs). The studied species included Albizia gummifera, Carissa edulis, Draceana steudneri, Ficus sycomorus, Grewia ferruginea, Millettia ferruginea, Prunus africana, Rhus glutinosa, Syzygium guineense and Ekebergia capensis.
Six independent samples per species were collected separately. The species were subjected to proximate, detergent and polyphenolic analysis. Dry matter and organic matter digestibility (DMD & OMD) of the plant leaves were determined following two stage in vitro enzymatic analysis. Dried plant species were incubated in two runs with three replications per run with rumen liquid collected from three Boran Holstein-Friesian crossbred steers and gas production measured at 2, 4, 6, 8, 12, 24, 32, 48, 58, 72 and 96 h of incubation.
Inhaltsverzeichnis (Table of Contents)
- Abstract
- Introduction
- Materials and methods
- Study site
- Leaves of the plant species
- Chemical analyses and nutritive value
- In vitro gas production measurement
- Statistical analyses
- Results
- Chemical composition, polyphenolic components and in vitro digestibility of the tannin rich plant leaves
- In vitro gas production potentials of the plant leaves
- Effects of tannin binding agents on in vitro gas production and kinetics of the leaves
- Fermentation characteristics of tannin rich tree leaves
- Effect of tannin binding agents on in vitro fermentation characteristics of tannin rich tree leaves
- Correlation between some chemical composition and in vitro gas production
- Discussion
- Plant leaf effects on relative nutritive value
- In vitro gas production potentials of tannin rich tree leaves
- Effects of tannin binding agents on in vitro fermentation of leaves of tannin rich trees
- Effect of plant species variation on in vitro fermentation kinetics
- Effect of tannin binding agents on in vitro fermentation kinetics of tannin rich tree leaves
- Correlation coefficient between some nutritive value and in vitro gas production parameters
- Conclusion
- Acknowledgement
- References
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This study aims to investigate the nutritive value of leaves from tannin-rich tropical multipurpose tree species, considering the impact of various tannin binding agents (TBAs). The research focuses on evaluating the chemical composition, in vitro fermentation characteristics, and the effectiveness of TBAs in mitigating the adverse effects of tannins on nutrient availability.
- Nutritive value of tannin-rich tropical tree leaves
- Impact of tannins on nutrient availability and utilization
- Effectiveness of tannin binding agents in mitigating tannin effects
- In vitro gas production as a measure of nutritive value
- Relationship between chemical composition and fermentation characteristics
Zusammenfassung der Kapitel (Chapter Summaries)
The study commences with an introduction that highlights the significance of tannin-rich tree species as sustainable livestock feed resources in the face of limited feed availability in developing countries. The introduction also discusses the challenges posed by tannins and the potential of TBAs to improve nutrient utilization. The materials and methods section outlines the study site, the selected tree species, the analytical techniques employed, and the in vitro gas production measurement procedures. The results section presents data on the chemical composition, polyphenolic components, in vitro digestibility, gas production potentials, and the effects of TBAs on in vitro fermentation characteristics. The discussion section elaborates on the findings, exploring the relationship between chemical composition and in vitro fermentation parameters, and the implications of the study for livestock feeding strategies. The conclusion summarizes the key findings and highlights the potential of tannin-rich tree leaves as a sustainable feed resource for livestock, emphasizing the role of TBAs in optimizing their nutritive value.
Schlüsselwörter (Keywords)
The research focuses on the nutritive value of tannin-rich tropical multipurpose tree species, examining the impact of tannins and the effectiveness of tannin binding agents (TBAs) on in vitro fermentation characteristics. Key terms include browse species, in vitro gas production, tannins, tannin binding agents, short chain fatty acids, and metabolisable energy.
- Quote paper
- Yisehak Kechero (Author), Afework Bedewi (Author), Assefa Getnet (Author), 2012, Tannin binding agents. Comparison of the effects of various tannin binding agents on nutritive value of leaves of tropical tannin rich fodder trees, Munich, GRIN Verlag, https://www.grin.com/document/352028
