Rovabio Excel: First NSP Enzyme Approved for Sows in EU

FRANCE - The European Union has just granted Rovabio® Excel, the Non Starch Polysaccharide (NSP) enzyme of Adisseo, the authorisation for use in sows, from one week before farrowing to weaning.
calendar icon 7 November 2014
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Employing Rovabio Excel (the versatile enzyme) in lactating sows diets leads to a decreased loss of body weight and lower backfat losses and better feed intake during lactation. With an estimated return on investment between 20:1 to 40:1, depending on hog prices, Rovabio Excel is a valuable new tool to benefit the swine industry, constantly operating with tight profit margins.

A meta-analysis was conducted, involving six trials, 640 sows ran at various university locations all over the world.. This meta-analysis demonstrated an average reduction of 3kg (more than 20 per cent) of bodyweight loss of sows receiving a standard diet including Rovabio Excel across a wide range of environmental and housing conditions, diet formulations and breeds. Similar results were obtained in high NSP diets (wheat, barley) and low NSP diets (corn) (Figure 1).

Figure 1. Results of six trials in the world: Bodyweight losses during lactation

Body loss of sows during lactation is a key indicator used to anticipate the impact on subsequent sow prolificity, longevity and length of weaning to oestrus interval.

A trial performed at the Prairie Swine Centre (Canada) with lactating sows confirmed the interest of using an NSP enzyme in the lactating sow’s diet. There was a reduction in weight loss during lactation (-1.7kg) and backfat loss after weaning (-0.5mm).

Table 1. Synthesis of technical results (Prairie Swine Center, (Canada)
Sow parameters
Feed intake from farrowing to weaning (kg) 104 111
Body weight loss during lactation (kg) -23.8 -22.1
Backfat thickness variation during lactation (mm) -5.1 -4.6
Litter & piglet parameters
Born alive 10.81 10.62
Litter size at weaning 10.01 10.40
Litter weight at weaning (kg) 62.3 67.3
Weaning individual weight (kg) 6.23 6.47

The positive effect was more important on first parity, which would be expected to have a positive impact on future reproductive performance of sows and productive longevity in the herd.

These results are the consequence of two actions. First, Rovabio Excel, the versatile enzyme, leads to a better digestibility of main raw materials of the diet. Furthermore, the Adisseo enzyme leads to greater feed intake during the lactation period (+7kg).

As a consequence of these two benefits on sow nutrition, individual weight of piglets and litter weight at weaning are both increased when sows receive a diet with Rovabio Excel (6.23kg vs 6.47kg, and 62.3kg vs 67.3kg, respectively).


For the nutritionist who has to deal with the challenge of the higher and higher nutritional requirements of hyper-prolific sows with a limited feed intake capacity, Rovabio appears to be a helpful tool for the formulation of consistent higher energy diets for lactating sows.

It is clearly admitted that excessive body and backfat loss during lactation should be avoided because of their impact on sows future reproduction capabilities: prolificity, longevity, and length between weaning and oestrus.

Furthermore, an increase of 250g live weight at weaning – as observed in Prairie Swine Centre trial – leads to an extra body weight at slaughter between 0.6kg to 1.0kg, or 0.5 to 0.8kg of carcass weight. Thus the calculated benefit of using Rovabio will approximate €15 to €28 per sow per year (on the basis of French results (GTTTT/GTE 2013: 23 pigs produced sow per year).

With a cost of use of only €1.30 to €1.50 per kg carcass of pig for the producer, this single advantage leads to an estimated return on investment between 20:1 to 40:1, depending on hog prices.

With this new registration, Rovabio Excel confirms its leading position as the versatile enzyme of choice. It is the only enzyme available on the market with a recommended single dosage for all diets, and is approved for all poultry, piglets (weaned), fattening pigs and now sows from one week before farrowing to weaning.

Adisseo will be at EuroTier 2014 - Hall 16/D12.

Contact: Adisseo. Immeuble Antony Parc II, 10 place du Général de Gaulle. 92160 Antony – France. Tel: 33 1 46 74 70 00. Web sites:

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