Wheat pasture bloat dynamics, in vitro ruminal gas production, and potential bloat mitigation with condensed tannins.

@article{Min2005WheatPB,
  title={Wheat pasture bloat dynamics, in vitro ruminal gas production, and potential bloat mitigation with condensed tannins.},
  author={Byeng Ryel Min and W E Pinchak and J. D. Fulford and Richard Puchala},
  journal={Journal of animal science},
  year={2005},
  volume={83 6},
  pages={
          1322-31
        }
}
The aim of this study was to determine the effect of winter wheat (Triticum aestivum L.) forage growth stage, forage allowance, time of day, and commercial condensed tannins (CT) on steer bloat dynamics and in vitro ruminal gas production. Twenty-six crossbreed steers (Angus x Hereford x Salers; average initial BW = 194 +/- 26 kg) were used. Wheat forage allowances were either 18 kg (high forage allowance) and 6 kg (low forage allowance) of DM/(100 kg BW.d). In each bloat observation period… 

Tables from this paper

Effects of condensed tannins supplementation level on weight gain and in vitro and in vivo bloat precursors in steers grazing winter wheat.

TLDR
Quebracho CT is potentially a value-added supplement that can decrease the impacts of frothy bloat and increase BW gains in stocker cattle-wheat systems.

Effects of Condensed Tannins Supplementation on Animal Performance, Phylogenetic Microbial Changes, and In Vitro Methane Emissions in Steers Grazing Winter Wheat

TLDR
In vivo and in vitro experiments suggested that the administration of CT improved BW gain and induced bacterial community changes in the rumen of steers grazing wheat forage, suggesting that CT supplementation may benefit stocker producers grazing wheat pasture by decreasing the incidence of bloat and increasing animal performance by changing rumen fermentation.

Occurrence of Condensed Tannins in Wheat and Feasibility for Reducing Pasture Bloat

TLDR
While the authors observed differences in CT reactive substances among the ExpLines, even the greatest equivalent amounts detected are unlikely suffi cient to render the forage bloat-safe, perhaps those experimental lines with the most abundant CT levels could be used in a selection program to increase the level of CT in wheat forage.

Effects of plant tannin supplementation on animal responses and in vivo ruminal bacterial populations associated with bloat in heifers grazing wheat forage1

TLDR
Results show that daily supplementing mimosa and chestnut tannins to heifers grazing wheat forage improved beef production and minimized bloat frequency with minimum impact to the microbial populations studied.

ffects of plant tannin supplementation on animal responses and in vivo ruminal bacterial populations associated with bloat in heifers grazing wheat forage 1

Two experiments were conducted to 1) enumerate the effect of tannin supplementation on ADG, bloat frequency, in vitro gas, and biofilm and foam production, and 2) quantify the influence of tannin

Variation in Crude Protein and In Vitro Dry Matter Digestion of Wheat Forage

TLDR
Variation in CP and initial in vitro dry matter digestion of wheat varieties and experimental lines are characterized to gain knowledge needed to develop genotypes that might decrease frequency and severity of bloat.

Bloat Mitigation Potential of Plant Tannins and Yucca Extracts based on in Vitro Ruminal Fermentation and Methane Gas Production from Wheat Forage

Three commercial plant tannin and a yucca extract having different secondary compound profiles were simultaneously evaluated in vitro for their effects on ruminal methane gas production and rumen

Solar radiation affects bloat potential of wheat forage

Frothy bloat is a serious digestive disorder in cattle (Bos taurus L.) grazing winter wheat (Triticum aestivum L.) pastures in the Southern Great Plains of the USA. Wheat plant metabolism may be one

INTERRELATIONSHIPS OF WINTER WHEAT VARIETIES ON RUMEN FERMENTATION RATE, FORAGE BIOMASS PRODUCTION, AND GRAIN YIELD DYNAMICS UNDER THE GRAZED OUT BY STEERS.

TLDR
Across WV, total forage protein and soluble protein content were declined from February to March 2004 and across FA, forage DM production in high-FA was higher (P<0.001) DM production than low-FA, which suggests that beneficial effects of POD for dual purpose winter wheat occur in the range from February 19 to March 08.
...

References

SHOWING 1-10 OF 38 REFERENCES

Influence of grain and monensin supplementation on ruminal fermentation, intake, digesta kinetics and incidence and severity of frothy bloat in steers grazing winter wheat pastures.

TLDR
Three 10-d collection periods were conducted to evaluate effects of no supplement, .5 kg-head-1.d-1 (M) on forage intake and digestion by 12 ruminally cannulated beef steers grazing irrigated winter wheat pasture and results indicated that forage DM intake was not influenced by supplementation during any period.

Low quality roughages for steers grazing wheat pasture. I. Effect on weight gains and bloat.

TLDR
It seems unlikely that LQR consumed to amounts similar to those of this study would control bloat of stocker cattle on wheat pasture, despite reports in the literature to "effectively control" or aid the prevention of bloat.

The effect of a condensed tannin-containing forage on methane emission by goats.

TLDR
Substantial differences between the forages in condensed tannins concentration and methane emission by Angora goats suggest that condensedTannins decreased methane emission.

Pasture management strategies for reducing the risk of legume bloat in cattle.

TLDR
Of all the feed additives tested, only poloxalene (Bloat Guard) completely prevented bloat, supporting the concept of a decreased probability of bloat with advancing stages of plant maturity.

Bloat in cattle. XVII. Wheat pasture bloat and its prevention with poloxalene.

In four controlled experiments, it was established that bloat occurring in rumen fistulated cattle pastured on wheat is a foamy type. Poloxalene effectively prevented foaming, and bloat scores of

In vitro digestion of bloat-safe and bloat-causing legumes by rumen microorganisms: gas and foam production.

TLDR
Gas volume was greater with a 1:1 (wt/vol) mixture of solid and fluid rumen contents than with rumen fluid alone, which is consistent with the rate of disintegration and digestion of legumes by rumen bacteria being an important determinant in pasture bloat.

COMPARISON OF THREE BLOAT-PREVENTING COMPOUNDS FOR CATTLE GRAZING CLOVER

TLDR
Eighteen steers that had previous records of bloat susceptibility were used to compare the effectiveness of two defaunating agents and a nonionic surfactant, poloxalene, for preventing bloat in steers grazing Regal clover.