Research results

The research activities of SEGES Pig Research Centre cover a wide range of areas and topics and animal categories.

SEGES Pig Research Centre investigates different aspects of nutrition, housing systems, environment and health-related issues all concerning the live pig and the impact of pig production on the environment.

The results of these trials and investigations are published in the form of trial reports, and some of these are available in English.

Some of the reports are available in their entirety, while for others only the abstract has been translated. The reports available in English are listed according to which group of animals the trial in question concerns.

Report 1905: Weaning without zinc oxide - field experiences

Hygiene, water and feed intake post-weaning, protein level in weaning feed and experienced staff were identified as key factors in weaning pigs without the use of in-feed zinc oxide on 12 farms.

Trial report 1148: OVN vitamin concept from DSM improves production in feed for piglets

The high vitamin levels recommended by DSM led to improved productivity and higher production value compared to the official Danish vitamin standards.

Trial report 1147: Test of feeding concepts as an alternative to zinc oxide for weaned pigs 

One concept improved productivity and lowered diarrhoea outbreaks compared with feed including zinc oxide. One concept was level with feed including zinc oxide, and two were level with feed without zinc.

Trial report 1101: Alternatives to medicinal zinc in feed for weaned pigs

The effect of adding 2,500 mg zinc per kg feed 14 d post-weaning did not differ from 1,500 mg zinc, but did improve performance and lowered diarrhoea treatments compared with 0 mg zinc or OceanFeed, MiyaGold and GærPlus in pigs 7-30 kg.

Trial report 1156: Benzoic acid inhibits the degradation of free amino acids in liquid feed

The addition of 0.5% or 1% benzoic acid to dry feed inhibited the degradation of free amino acids in liquid feed. Benzoic acid also seemed to inhibit growth of yeast as well as the production of lactic acid during fermentation.

Trial report 1154: Danbred Duroc crossbred finishers grow faster than Pietrain crossbreds

Daily gain was 142 g higher and lean meat % in carcasses 2.0% lower in DanBred Duroc offspring compared with Pietrain offspring. Daily gain in the 7-30 kg period was 21 g higher in DanBred Duroc pigs.

Trial report 1138: Less boar taint in offspring of DanBred Duroc boars with low androstenone levels

Androstenone levels and sensory reactions to boar taint can be reduced when DanBred Duroc boars with low androstenone levels are used for production of intact males.

Trial report 1102: Androstenone in intact males increases as live weight increases

Androstenone in back fat in intact males increase with live weight. Research reveals correlations between androstenone levels recorded in the individual pig at 60, 70, 80, 90, 100, 110 and 120 kg live weight and in the carcass at slaughter.

Report 1803: Test of 10 different farrowing pens for loose-housed sows

None of the ten pens tested scored ‘good’ or ‘very good’ in all parameters, and results confirm that further development and testing is necessary to produce a robust farrowing pen for loose-housed sows.

Updated 1. May 2019

In 2002, a new feed evaluation system was introduced in Denmark. This system is based on the physiological energy value of the nutrients and on their standardised digestibility.

The new system introduced two new feed units replacing the old feed unit: FUgp (feed units for weaners, growers and finishers) and FUsow (feed units for sows).

In practice, the Danish energy evaluation is based on:

  1. Chemical analyses of water, ash, crude protein and crude fat
  2. In vitro digestibilities at ileal and faecal levels
  3. Energy values of nutrients based on "potential physiological values".

The protein evaluation system is based on the standardised ileal digestibility for each amino acid.