Silage Additive


A new generation of silage additive

Sometimes silages made with additives do not stay stable at pH4 but continue fermenting, resulting in acidic, high lactic acid silages. Grass seed mixes have been developed over the years with higher sugar levels, but in combination with higher buffering capacity (ability to resist pH change) in many new swards, using microbial technology to increase lactic acid production can lead to depletion of natural plant sugars, and excessively low pH silages – with greater risk of acidotic conditions in the cows. Slurry is applied at greater rates in spring and between cuts of silage. Whilst this is a welcome saving on bagged fertilizer and can help with nitrogen pollution issues, the plants propensity to increase the concentrations of macro elements such as Potassium, and the addition of potentially pathogenic organisms to the growing crop, may be responsible for the increased level of toxins in silage. Latest research has concentrated on trying to solve the problems sometimes encountered with these issues. PENTO-GUARD is based on new bio-technology, designed to conserve grass, maize and whole crop silages through a more rumen-friendly balance of preservation acids, and by directly inhibiting the pathogenic micro-organisms.

PENTO-GUARD contains Lactobacillus buchneri (DSM 22501/CCM 1819 at 2.0 x 1010 cfu/g) and Enterococcus faecium (DSM 22502/NCIMB 11181 at 2.0 x 1010 cfu/g), Lactobacillus lactis SR3.54 (NCIMB30117/1K2083) at 2.0 x 1010 cfu/g and Xylanase at 100 000 HEC/g (IUB from Trichoderma longi-brachiatum).

There are now essentially four modes of action:
1. Xylanase enzyme, works on the xylose fraction (the inner tubes) of the fibre in the grass to produce pentose sugars. The structural integrity of the plant fibre is not affected. This gives a more stable silage and maintains structural fibre levels for the cow.
2. The initial process uses the microbe Enterococcus Faecium to prevent the development of pathogens in the silage during fermentation and subsequent feeding. Having the shortest “lag phase” and a controlled pH range of activity, Enterococcus Faecium rapidly reduces pH in the optimal range. Controlling pathogens in silage may result in health benefits for the cow.
3. Then Lactobacillus Buchneri feeds on these sugars and produces both lactic and acetic acids. This balance of acids is much better suited to the cow rumen and prevents the development of very lactic, low pH silages, associated with acidosis. Acetic acid is a precursor for milk fat production and also inhibits the formation of yeasts and moulds in the clamp.
4. Lactobacillus Lactis SR3.54 brings breakthrough bio-technology to silage making, and is a patented organism. It has a unique ability to produce nisin which is known to inhibit clostridia and other damaging gram positive bacteria, which helps to reduce DM losses in silage. Also, it will knock out yeasts & moulds which lead to aerobic spoilage.

– Silages treated with PENTO-GUARD are sweeter and more palatable than untreated silages, which results in higher dry matter intake, which promotes milk yield.
– Yeast and mould growth is reduced, with reduced spoilage and heating.
– Silage will also be more resistant to heating at feed out.
– Aerobic stability is improved and protein retention increased.
– Breakdown of protein by Clostridial organisms, and subsequent amine production is reduced.
– PENTO-GUARD quickly helps to create an anaerobic state thereby improving DM recovery.

In practice, this process produces silages that are sticky to touch with a better balance of acetic and lactic acids. This results in stable silages that are less likely to warm up when fed. PENTO-GUARD can be used on grass and maize silages between 20 and 45% DM and whole crop between 20 and 50%. This product is available in sachets (one per 50 tonnes of silage) for dilution in water and applied at 2 litres per tonne.

PENTO-GUARD meets all EU regulatory requirements and is manufactured to the highest standards. Note: Pentose sugars are not measured on a standard silage analysis but are easily verified by touch. We advise farmers to ensure the crop, harvesting and clamp conditions are suitable and rations formulated correctly.