Keenan Diet Feeders (MechFiber & VA)
Precision mixing, consistent TMR, proven performance for UK dairy & beef herds

Looking for a diet feeder that delivers a consistent, fluffy TMR and measurable performance? KEENAN’s range combines robust engineering with nutrition-led technology. From the MechFiber+ paddle mixers to VA vertical auger wagons (including self-propelled options), KEENAN feeders are built to mix accurately, protect fibre structure and support intakes, butterfat and liveweight gain—backed by InTouch feed management and nutrition support.
Why choose a KEENAN diet feeder?
The KEENAN range at a glance
MechFiber+
(Horizontal Paddle Mixers)
Purpose-built to protect fibre structure and deliver the signature MechFiber ration. Popular models include:

- MechFiber320+ (≈14 m³): Low HP, BaleBlend option, feeds high troughs (~1,181 mm). Suited to medium farms.

-MechFiber380+: Large mixer, ~9,000 kg payload; feeds ~170 dairy cows or 320 beef finishers/day.

-MechFiber400+: Largest paddle mixer; heavy-duty 4-chain drive for high work rates and durability.
What it’s best at: Producing a fluffy, consistent TMR with excellent particle distribution—great for high-forage diets and butterfat.

VA Series
(Vertical Auger Mixers)
For herds preferring vertical auger tech and larger single mixes.

- VA Range: Consistent mix with wide auger, multiple discharge options, sprint paddles, InTouch ready. Capacities from 24 m³+.

-Spec Example - VA 2-24S (24 m³): Feeds ~180–190 dairy or 360–380 beef; needs 70–95 HP.

-VA-SP (20–33 m³): Tier IV NEF-FPT engines (151–210 kW) for efficient cut, load & mix.
What it’s best at: High-capacity mixes, versatile discharge setups, integrated feed management with InTouch.
Genuine Keenan Parts Available
We stock a wide range of Keenan feeder wagon parts, helping you keep your machine running reliably all year round. From routine service items to replacement components, our parts shop has you covered.
Key features & options
InTouch Controller: Step-by-step loading guidance; auto weight tracking; cloud analytics on accuracy, DMI, refusals, costs; mobile app access.

Add-ons & spec choices: BaleBlend, magnet packages, different discharge doors/conveyors, cameras, tyres, weigh-cells, knives, and extensions (availability varies by model).
Mixing tech: MechFiber paddle reel (6-paddle with updated castellations) for improved mix quality and reduced wear; VA wide-flight augers for thorough, even blends.

Support: UK & Ireland InTouch phone support, covering controller assistance, nutrition queries, and day-to-day feeding guidance.
Benefits on the farm
-Protects fibre & rumen function → stable butterfat and intakes.

-Repeatable accuracy → reduce refusals and over-mixing; benchmark feeders/operators over time.

-Potential cost savings thanks to better load order, mix quality and feed-out discipline.

-Capacity to match your system → from ~14 m³ yard-friendly mixers to 33 m³ self-propelled machines.
Which KEENAN suits my farm?
Farm system / need
High-forage dairy chasing butterfat / fibre-sensitive rations


Large herds, varied rations, multi-cut silage & by-products


Max efficiency, single-operator workflow
Recommended KEENAN model
MechFiber+ (Paddle Mixers)



VA 24–44 m³ (Vertical Auger)



VA-SP (Self-Propelled)
Why it fits
Gentle mixing protects fibre structure, produces light/fluffy TMR, supports stable butterfat and intakes

High-capacity augers handle diverse ingredients, versatile discharge options, InTouch-ready

Cuts, loads and mixes in one; reduces labour, ideal for large units
Frequently asked questions
How does MechFiber differ from a typical vertical auger mixer?
MechFiber uses a gentle paddle reel to lift and fold ingredients, preserving fibre length and creating a light, aerated TMR. Vertical augers cut and blend thoroughly with helical flighting—excellent for larger, heavier mixes and rapid processing.
Can I track loading accuracy and refusals?
Yes. The KEENAN Controller and InTouch dashboard track loading order, ingredient weights, feeding accuracy, DMI, refusals and costs, across feeders and operators.
What size should I choose?
Match daily throughput and diet density. As a guide, a MechFiber380+ (9,000 kg payload) can feed ~170 dairy cows or ~320 beef finishers per load; a VA 24 m³ is rated around 180–190 milkers per load. Your actual capacity depends on diet DM and ingredients.
Do KEENAN feeders need high horsepower?
Paddle models are known for modest HP needs; VA models list typical ranges by size (e.g., 70–95 HP on VA 24 m³). Check model-specific guidance.
What support is available?
InTouch provides UK phone support and remote guidance for both controller and nutrition queries, plus on-farm advisory via KEENAN/Alltech.
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