Livestock feed additives

(Documents in French only)

Digestion enhancer additives are considered as performance additives since they are not designed to satisfy the animals' nutritional needs. This primary function of this type of additive is to facilitate better absorption of the nutrients in the feed. This type of additive can contribute to better growth performances and improved digestive health. (Source)
  • Enzymes
An enzyme is a protein that contributes to the activation or acceleration of chemical reactions; it is a biological catalyst. This type of protein improves the digestibility of feed as well as contributing to better absorption of the ration and less waste. (Source)

Gut flora stabilizer additives are so-called performance additives, like the digestibility enhancers, because they are not intended to address the nutritional needs of animals. These additives are primarily meant to ensure good gut health by limiting the introduction of pathogenic bacteria or by competing with them. As a result, this improvement in gut flora stability can sometimes result in improved growth performances. (Source)

  • Acidity regulators
The function of PH-adjusting additives is to regulate the growth of bacteria through the pH present in the gastrointestinal/digestive tract. For example, the addition of acidifying feed additives brings about a lowering of the pH in the digestive tract, and reduces the growth of certain pathogenic bacteria. (Source)
  • Minerals
Les minéraux sont des additifs communément utilisés en alimentation animale de façon à répondre aux besoins nutritionnels des animaux. Cependant, certains minéraux montrent des effets positifs sur la flore intestinale lorsqu’ils sont intégrés à des doses plus élevées que les besoins nutritionnels (Stein, 2007).
  • Phytobiotics
Phytobiotics are plant derived products that show positive effects on digestive health and growth performances when added to livestock feed (Fallah et al., 2013; Jacela et al., 2010).
  • Functional Proteins
Protein ingredients are commonly used in livestock feed in order to meet the animals’ amino acid and protein requirements. However, certain types of so-called functional proteins may have functions other than just that of providing nutrients for the animals' growth. For example, certain types of protein ingredients containing immunoglobulins or antibodies have shown positive effects on animal immunity as well as on intestinal flora (Stein, 2007).
  • Microorganisms
Microorganisms administered in livestock feed have the job of improving the intestinal flora, either by colonizing the digestive tract or by competing directly with, or by destroying the pathogenic bacteria (Broadway et al., 2014; Huyghebaert et al., 2011). 
  • Non-digestible substances
Non-digestible additives are usually used to stimulate the growth of the bacteria best able to break down these substances, or to block the effects of toxins or bacteria, and to expel them from the animal's body. In so doing, they contribute to better gut health (Fallah et al., 2013).