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Fattening pigs - Finishing


Pig nutrition concept for lots of piglets and lots of meat! 
Click on the performance phases for more information.

Breeding sows Piglets Gilts Fattening pigs
Gestation period First hours of life Rearing phase I Initial fattening
Preparation for birth Lactation period Rearing phase II Finishing fattening
Lactation period Weaning period    
Non-pregnant sows Breeding period    

Performance goals

  • Best feed conversion ratio
  • High lean meat content
  • Lots of rotations/year

Significance of the phase

From around 70kg, the living mass increase of a fattening pig has a different composition compared with at initial fattening.
Protein development was still very high there, which is why the feed contains more protein or amino acids to encourage development of meat content.

Over around 70kg, pigs’ ability produce protein decreases and fat content increases.
That means that the feed at finishing can contain less protein (if it has the right amount of amino acids).

This also has the positive effect of less nitrogen (N) being expelled in liquid manure.
The phosphorus content can also be reduced in feed at finishing. These measures also have a positive effect on the liquid manure balance.

The less nitrogen and phosphorous expelled, the more animals you can keep per hectare. To justify these conditions, your fattening pigs should be fed in phases that are suited to the respective needs in each section.

The phosphorous and raw protein content should also be reduced in feed for pigs that are at finishing.

However, protein reduction is only possible if all other essential amino acids that are still missing are added in isolated, highly available form (SanAmin®).  It is the perfect complement to soy protein for high daily weight gain and good meat content.

Phase feeding has the following benefits for you:

  • Your animals’ metabolism is protected, improving their ability to perform.
  • The farm's liquid waste balance and thus the maximum number of animals permitted per hectare improves, because less nitrogen and phosphorous is emitted.
  • Reduction of feeding costs through reduction of minerals and protein content (soy) and through improved feed conversion ratio

In any case you must make sure that the slaughter date is right to improve the slaughter yield.

The grain size of the feed influences fattening performance. If the feed has been milled too coarsely, daily weight increases will drop and feed conversion ratio will deteriorate. On the other hand, stomach problems will occur if it is too fine.

You should make sure that the proportion of finely milled (<1mm) feed is <40%.
Check the degree of milling regularly using a riddle. If there is too much finely ground feed, check the hammer in the mill for wear. The recommended sieve size is 3.5-4.0mm.

Because your fattening pigs place high demands on their feed, mix 2.5% Aminogold® Forte into your finishing feed after around 70kg.


  • Reduce the strain on your animals‘ metabolism and improve their health
  • Increase the possible number of animals/ha
  • Save on expensive soy meal
  • Support the high lean meat content
  • Ensure high daily weight gains and optimum feed conversion ratio

Aminogold® Forte contains San Amin® for improving protein quality. The total protein content in the feed (soy meal) can be reduced. As a result of this and also because of the high quality mineral sources and phytase in Aminogold® Forte, the liquid manure balance can be improved and the strain is lifted from the animal’s metabolism.

The active ingredient, ButySanProtect, in Aminogold® Forte improves digestion, intestinal health and use of feed.
The Sano polyphenol complex is contained in Aminogold® Forte for protection from vitamin E and to increase the antioxidative capacity and resistance.

Aminogold® Forte

  • Ensures high feed consumption
  • Optimises digestion
  • Improves feed conversion ratio
  • Increases resistance 
  • Encourages even growth
  • Supports a high lean meat content

© Sano - Moderne Tierernährung GmbH