Comparison of nutrient composition and anti-methanogenic properties of different <i>Rosaceae</i> species

Effect of dietary fibre and condensed tannins concentration from various fibrous feedstuffs on <i>in vitro gas</i> production kinetics with rabbit faecal inoculum

“…CT have both positive (low levels of CT: <3%) and negative (high levels of CT: >5%) effects on feed digestibility and animal performance, depending both on the quantity and biological activity of the condensed tannins (Schofield et al, 2001;Min et al, 2006;Kara et al, 2015). The multiple phenolic hydroxyl groups of condensed tannins (or proanthocyanidins) lead to the formation of complexes with proteins, metal ions and other macromolecules like polysaccharides (Schofield et al, 2001).…”

“…digestibility experiments are expensive and time-consuming as they require lots of animals and large amounts of feed. The cumulative gas production technique was used to evaluate the nutritive value of feeds according to their fermentation kinetics (Kara, 2015;Kara et al, 2015). This technique has been applied successfully in different animal species, for example in ruminants (Kara, 2015;Kara et al, 2015;Miltko et al, 2015), horses (Elghandour et al, 2016), chickens (Guo et al, 2003) and rabbits (Bovera et al, 2010).…”

<i>In vitro</i> fermentation, digestibility and methane production as influenced by <i>Delonix regia</i> seed meal containing tannins and saponins

“…Anantasook et al (2016) explained that condensed tannins present in plants may be suppressing CH 4 production by shifting hydrogen from the CH 4 pathway to produce C3. Moreover, saponins may also induce rechanneling of metabolic hydrogen from CH 4 to C3 production (Kara et al, 2015). Furthermore, Waghorn (2008) revealed that plant secondary compounds may adversely affect cellulolytic bacteria and consequently anaerobic fermentation of carbohydrates to short-chain fatty acids, particularly C3, thereby reducing CO 2 and H 2 formation, which is required for methanogenesis, such as the succinate pathway.…”

“…Hence, CH 4 mitigation strategies in ruminants have focused on obtaining economic and antiglobal warming benefits (Kara et al, 2015). Some mitigation options such as chemical inhibitors, defaunation and ionophores directly or indirectly inhibit methanogenesis in the rumen, but consistent effects for practical use have not been confirmed yet (Hristov et al, 2013).…”

The effect of Mediterranean thyme (<i>Thymbra spicata</i> L. var. spicata) essential oil on fattening performance and ruminal parameters in lamb

“…It was demonstrated that TS essential oil, especially at the level of 80 mg · l −1 , exerts a positive effect on the in vitro feed digestibility (Baytok et al, 2013). Nowadays, it is very important to reduce ruminal methane emission in order to prevent global warming and gross energy losses of feed (Kara, 2015;Kara et al, 2015). In the aforementioned study, the 80 and 120 mg · l −1 doses of TS essential oil were found to reduce methane production by 9.45 and 34.90%, respectively (Baytok et al, 2013).…”