News details

Apr 7, 2017

Poultry Yang

Results of meta-analysis show YANG benefits starter broiler performance

Results of meta-analysis show YANG benefits starter broiler performance

Lallemand Animal Nutrition presented a new poultry nutrition study at this week’s poultry research congress in France, “Journées de la Recherche Avicole”, showing the benefits of an innovative alliance of specific yeast fractions, YANG, for the broiler starter phase1. The combined results of six trials conducted in Europe during the starter phase indicate a significant improvement in broilers’ zootechnical performance  ̶ average daily gain, feed efficiency, final body weight ̶ and significant reduction of mortality during the starter phase with the novel yeast derivatives vs. control diet. Such robust statistical data indicate a growth advantage with the specific yeast derivatives during this critical phase of broiler production, which determines performance for the whole cycle.


A novel solution for young animals

YANG, the Yeast Association New Generation, was launched by Lallemand Animal Nutrition in 2015. It is a synergistic alliance of specific strains of inactivated yeast born from Lallemand research in partnership with leading Research Institutes. The properties of yeast derivatives (products obtained from inactivated yeast cells), and their ability to 1) adhere to specific bacteria and 2) modulate the immune system, are well known in human and animal nutrition. Lallemand research has reinforced the fact that these properties are highly strain-dependent and can be influenced by production processes. Using cutting-edge technologies applied for the first time in this area, Lallemand R&D teams have selected specific yeast strains with different and complementary properties and combined them in a unique formula. Trials in various animal species (shrimps, piglets and young ruminants) have already shown beneficial effects during stressful and challenging conditions such as weaning, feed transitions and sanitary challenges in young animals. This new study is the first publication in poultry.


Optimization of starter period in broilers

In broilers, the final economic performance is determined very early during the starter phase, where the maturity of the digestive processes and the immunity of the chicks are established. Hence, securing efficient performance from the start is a key objective for producers. Between 2015 and 2016, six trials were performed in several research stations or in farms in different European countries in order to evaluate the effects on performance of YANG in the starter phase (between 10-14 days according to the trial set up). Statistical analysis of the six trials results indicate that the YANG treatment group experienced:

  • Higher final weight at the end of starter phase (+3.6%), while initial weight was statistically equivalent between groups for each trial (375 g with YANG, vs. 362 g for control; P < 0.001),
  • Improved growth by 3.6% (average daily weight gain: 28.6 g/animal/d with YANG, vs. 27.6 for control; P < 0.001),
  • Significant improvement of feed efficiency by -0.6% (FCR 1.267 with YANG, vs. 1.275 for control; P = 0.006),
  • Reduced mortality rate by 0.8% during the starting phase (2.9% mortality with YANG, vs. 3.7% for control; P = 0.001).

It was concluded that the novel combination of different fractions of inactive yeasts strains helps optimize zootechnical performance during the broiler starter phase.

1- Barbé F., Sacy A., bertaud B., Chevaux E., Castex M. Optimization of starter period in broilers by supplying a novel association of specific yeast fractions, Barbé et al., Journées de la Recherche Avicole 2017, April 5-6, Tours, France