OptiSile Extra

OptiSile Extra: Three-strain biological silage inoculant

OptiSile is now twice the strength to give even better results! We have increased our minimum concentration of bacteria across our Optisile range, meaning even more protection against yeast and mould development in your silage!

Developed and manufactured at EnviroSystems UK in Lancashire, OptiSile Extra is an organically registered silage preservative based on the very latest knowledge about biological silage additives providing:

  • Rapid fermentation
  • High palatability
  • Cool, stable clamp face
  • Minimal waste
  • Maximum nutrient preservation
  • Inhibition of Clostridia, yeasts and mycotoxins
  • Suits a wide range of dry matters
  • Helps towards rumen management for feed efficiency
  • Ultimately increases milk yield and helps you make more money

OptiSile Extra employs a three-strain combination of Lactobacilli. One is the widely used L Plantarum, a homofermentative bacteria to support a rapid lactic acid fermentation. The combination of the two other heterofermentative bacteria work together inhibit moulds, yeasts and Clostridia.

The combination of strains create fast, stable preservation, and maximise palatability and nutrient availability. The inoculant has proven effective on many farms, over a wide range of dry matters, including both very high and low in the UK and abroad.

Yeasts, moulds and other spoilage organisms (Clostridia and Listeria) cause silage to heat up at the open clamp face and feed trough, commonly called secondary fermentation. This is inhibited by the STAYCOOL effect which protects the face of the clamp and continues working at feed-out.

Independent research published in the respected peer-reviewed journal, Applied Environmental Microbiology, identifies that a rapid lactic fermentation produced by homofermentative bacteria alone when you fill the clamp is not enough on its own to prevent secondary fermentation. [ref1]


EnviroSystems microbiologist Henry Russell explains: “The unique combination of bacterial strains in OptiSile additives inhibits spoilage organisms throughout storage and also keeps the clamp face and silage in the trough stable and cool. If silage heats this mean feed value and money are being lost into thin air.”

So this ‘Triple-Action STAYCOOL effect’ has a big part to play in exploiting the full feed value of silage with minimal waste.

The research report [ref1] also states that using inoculants producing only lactic acid “leads to silages which have low stability against aerobic deterioration”

REF 1 H Danner et al, 2003. Acid Increases Stability of Silage under Aerobic Conditions. Appl Environ Microbiol. 2003 Jan; 69(1): 562-567.

The OptiSile Range

All the issues which apply to preserving grass also apply to Maize, Wholecrop and other ensiled crops. Therefore, the action of OptiSile is just as relevant on any crop which can be clamped or baled and fermented. As well as OptiSile Extra our range also includes OptiSile Wholecrop and OptiSile Maize, click below to learn more.



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