Frothy bloat in ruminants: Cause, occurrence, and mitigation strategies

Foam formation in full-scale biogas plants processing biogenic waste

“…VFA/TIC, pH, and concentrations of NH 4 -N and of volatile fatty acids (VFAs) were determined as quantities which are able to confirm the stability of the biogas process according to Switzenbaum et al [22], Chen et al [23], and Eder and Schulz [24]. The well-known foam-triggering substances are proteins [6], polysaccharides [25], and lipids [14] as it was reported for sewage sludge AD and AD in the rumen. For this reason, the contents of these substances were analyzed.…”

Use of Yeast Probiotics in Ruminants: Effects and Mechanisms of Action on Rumen pH, Fibre Degradation, and Microbiota According to the Diet

“…Indeed, frothy bloat is caused by entrapment of gas produced from fermentation of readily digestible feeds (high digestible legumes or cereals). Bloat can impair both digestive and respiratory function, and can occur both in cattle raised on pasture or in confinement [40]. Abscessed livers are generally considered to be associated with both acute and subacute ruminal acidosis.…”

Promising options for improving performance and proanthocyanidins of the forage legume sainfoin (Onobrychis viciifolia Scop.)

“…This result stresses the importance of 187 cultivars with increased performance, especially with increased competitive ability (against weeds 188 and the mixture partner). Strategies to achieve this include breeding for high yields in general 189 (independent of monoculture or mixture) and breeding for high performance derived from the 190 adaptation to specific mixture partners (Hill 1990 Protein precipitation in the rumen also reduces fermentation gas accumulation and the formation of 232 stable foams, which both lead to bloat and may cause animal death (Sottie 2014;Wang et al 2012). 233…”