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Rumen Paks

NWF has a range of rumen paks to support rumen function and performance through the year. The range, summarised below, is available from your local NWF Sales Specialist or by calling 0800 767 2787.

A cost-effective way of optimising rumen pH. Contains Yea-Sacc and a blend of buffering agents including Acid Buf.  Combining a specially formulated range of buffers with improved fibre digestion from Yea-Sacc to produce the optimal rumen environment.

This product is a solution to combat SARA in your cows

SARA – Sub-acute Rumen Acidosis signs include:
• Poor Performance
• Fluctuating Milk yield

This can be triggered by:
• Wet Maize Silage
• Acidic grass silage
• High levels of cereal

NWF Stable Rumen Pak™ should be fed at 75g/cow/day either free access or in-feed.  This feed range equates to 50g of Yea-Sacc and 125g of Acid Buff.


Dairy cows often underperform for no apparent reason, with depressed feed intakes and yields.  In most cases, the problem is poor rumen health.  As the rumen produces around 70% of the energy and protein used by the cow, anything that disrupts the rumen disrupts the cow.

NWF Healthy Rumen Pak™ contains Yea-Sacc and Mycosorb, formulated to help ensure the conditions in the rumen are maintained at a level to promote high intakes, efficient digestion and increased yields.

– Scavenges oxygen from the rumen, removing the ‘barrier’ to efficient fibre digestion
– Promotes beneficial bacteria in the rumen, increases fibre breakdown by up to 20% and helps reduce the incidence of sub acute ruminal acidosis (SARA)
– Maintains a more stable rumen pH
– Increases dry matter intake by up to 1.4kg
– Increases milk yield by up to 1.4kg

– Broad-spectrum action against a wide range of mycotoxins
– Stops mycotoxins attacking the rumen and the cow
– Cost effective formulation helps protect the immune system of your cattle
– Improves dung consistency

NWF Healthy Rumen Pak™ can also deliver benefits when fed to cattle and calves.  In cattle, it will help increase liveweight gain by over 10%, improving carcass composition and reduce the risk of bloat.  Calves will see an improvement in dry matter intake and liveweight gains by 8%.


The ultimate buffer is a blend of buffering salts including Acid Buf, Calcified Seaweed and essential oils. Ultra Buf is the perfect solution for situations when forage is variable and wet, during diet changes and if cows are experiencing SARA or clinical acidosis.  It is also suited to high concentrate or starch heavy rations or high degradable protein rations.  The recommended feed rate is 50g/head/day.

The Acid Buf conditions the rumen and allows it to work more efficiently, with its unique honeycombed structure and large surface area, Acid Buf breaks down slowly in the rumen –neutralising significantly more acid, over a longer period, than many conventional buffers.

  • Better neutralising of rumen acid ensuring a stable optimal rumen pH
  • Improves fibre digestion
  • Boosts milk yield and quality

The unique blend of natural plant extracts, essential oils and spices increases the amount of bypass protein reaching the small intestine whilst improving nitrogen efficiency in the rumen, shown by a decrease in ammonia release. These factors can lead to lower milk ureas and increased feed efficiency.

  • Improves rumen pH
  • Increases milk yield and improved milk quality
  • Increases fibre digestion
  • Increases feed efficiency


An enhanced version of Healthy Rumen Pak that contains Yea-Sacc and a higher rate of Mycosorb.
NWF offers a diet check service and feeding recommendations to help your herd.  If you would like further information, prices and a free PH testing kit contact our local NWF Sales Specialist.

To request a further information on NWF Rumen Paks and quotation please call your NWF Sales Specialist or call 0800 756 2787 or email



The NWF Protected Fats provide a rich source of energy to support milk production, reproduction and growth. Fat has a 250% higher energy value than carbohydrates provided by cereals and forages.

Protected fats are one of the richest sources of energy representing the best opportunity for fulfilling the huge energy demands of today’s high yielding dairy cows. If insufficient energy is provided the cow will lose unacceptable amounts of weight compromising milk yield and fertility.  This can also lead to risk of metabolic disorders such as ketosis and acidosis.


•Improved peak and lactation yields
•Improved milk solids – butterfat and protein
•Improved cow condition
•Improved fertility
•Reduced risk of acidosis and ketosis
•Reduced culling rates


A cost effective high quality rumen protected fat to help improve the performance of high yielding cows, beef animals and lactating ewes by meeting the energy demands required.

Dry Matter        97%
Protein              0%
Oil                    85%
ME                   34 MJ/kg/DM
C16 Fat             48%
C18 Fat             49%

Evolution Fat can be incorporated into TMR Diets & top dressed onto forage and fed to response.
• Dairy Cows up to 500g depending on performance, cow condition and stage of lactation
• Beef up to 300g
• Sheep up to 200g


A cost effective way of maintaining and improving butterfat production, as well as increasing the energy density of the diet.  This product should be mixed thoroughly in TMR or top dressed onto forage and fed to response.  The product is typically fed in the first 150 days of lactation to aid butterfat production.  It is designed only to be fed to dairy cows and can be fed at up to 500 grams per day, depending on milk contracts.

Dry Matter        100%
Protein                 0%
Oil                    100%
C16                  85-90%
ME                   36.5 MJ/kg/DM

For further information on the NWF Protected Fats or call us on 0800 756 2787 or contact your local NWF Sales Specialist.


Protected Feeds

NWF produce a range of ‘Protected feeds’ designed to deliver performance and value.

Diets for high yielding dairy cows need to supply sufficient nutrients while maintaining a high standard of rumen health. Failure to supply these nutrients or in a way that upsets the rumen health will lead to reduced yields and less profitable cows.

Ultra Pro-R™
A treated high-quality rape protein. A 34% crude protein product but with 75% available as DUP.

As a result of the precise treatment of the Rolled Wheat, Rape meal & extracted Soya bean meal, used in the three products, the finished feeds have a much higher specification which increases their value in ruminant diets and allows us to optimise your formulation.

All products are available in bulk and tote bags for collection next day and we can deliver anywhere in the UK from our production sites.

Ultra Starch-W™
This uses wheat as a starch source. But when treated the starch becomes rumen friendly, as a high level is converted to bypass, giving it a similar value to maize-based products but at a lower cost. The Glucogenic nutrients are increased from 230 in wheat to 255 which can be compared to Ground Maize at 268.

The benefits are:
•Increased starch levels without upsetting the rumen
•Increased supply of glucose to the udder
•Higher milk yields
•Guaranteed supply
•Available in NWF blends and compounds or from our trading desk.

Ruminant diets require a balance of protein sources to maximise performance and feed efficiency. Highly productive ruminants need an adequate supply of Digestible Undegradable Protein (DUP) to complement microbial protein and boost protein supply.

NWF Ultra Protected Proteins are produced by taking high-quality vegetable protein sources widely used in ruminant diets and treating them to reduce degradability of proteins in the rumen. Protection can double the proportion of DUP.

Ultra Soy™
NWF Ultra Soy™ is a protected protein produced by taking high-quality vegetable protein sources widely used in ruminant diets and treating them to reduce the degradability of proteins in the rumen.

The protection of the protein increases the feed value of the raw material and can double the proportion of MPB. The proven approach increases MPB supply without reducing the quality of amino acids supplied.

Ultra Soy™ provides a cost effective raw material that won’t jeopardise performance.
High-quality soya protein 46% soya protein of which 83% available as MPB delivering optimum performance

NWF can supply Ultra Soy™ within the standard and bespoke blends and compounds, or as a straight for home mixing.

For more information on Protected feeds including free leaflet, please speak to your sales specialist or contact our trading team directly on 0800 756 2787



A complement to vitamin E in all NWF Dairy Compounds and featured in the new NWF Summer Grazing Mineral.  NWF Cell Shield® is a powerful antioxidant designed to help dairy farmers optimise production and cattle health.

CELL SHIELD - Antioxidant for health cows

NWF Cell Shield® supports and regenerates vitamin E within the cow’s system, helping improve immune response.  This can help reduce somatic cell counts as well as the risk and severity of mastitis and other infections.  High yielding cows inevitably have increased cell breakdown and higher levels of damaging free radicals as a result.  Antioxidants are critical in tackling free radical damage and NWF Cell Shield® works on an intracellular level to achieve this.

Best practice for healthy cows
– Powerful antioxidant in its own right
– Supports and regenerates vitamin E
– Improves immunity
– Proven by 10 years of research

– Reduced Somatic cell counts
– Improved fertility
– Helps reduce risk of all infections

For further information on maintaining a good antioxidant balance for your dairy herd contact your local NWF Sales Specialist or call 0800 756 2787



Magnesium supplementation is an important supplement to help prevent metabolic issues. Supplementing with magnesium will reduce the risk of milk fever and grass staggers.

The addition of magnesium within livestock feeds increases rumen pH and can help increase milk yield and butterfats.  Absorption for ruminants is improved with more readily degradable carbohydrates.  Rumen pH is important in its influence of solubility, high pH reduces magnesium solubility.

Our range includes:-

•Magnesium Flakes
•Calcined Magnesite
•High Mag Minerals

Consider minerals to increase magnesium levels available as powdered or buckets

For information on magnesium for your livestock please contact your local NWF feed specialist or call us on 0800 756 2787 or email us at



An essential element of the ruminants diet should be salt, restriction over a period of time can result in poor feed conversation, lower weight gain and damage to the central nervous system.

Salt promotes the production of saliva to ensure optimum function of the digestive system.  If livestock are attempting to drink urine from other animals or chewing wood they are likely to be deficient in salt.

Our range includes:-

•Lump Rock Salt
•Ground Rock Salt
•PDV Salt

For further information on the NWF salts please call 0800 756 2787 or contact your local NWF Sales Specialist.

Speak to one of our NWF sales specialists to review current feed rations and analyse forage to advising you on the right supplements that your livestock may require OR try our online NWF PROBLEM BUSTER.

Use our handy guide, below, to help pinpoint problems and crush complications with NWF’s range of rumen supplements:

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