French Swine Vets Rewarded for Study

FRANCE - For the second year running, Dr Yannig Le Treut, DVM, has been awarded the Patrick Pommier Short Communication First Prize at the Annual Congress of the French Swine Veterinarians Association (AFMVP).

19 December 2011

3 minute read

By: Gemma Hyland

Europe

According to Lallemand Animal Nutrition, the study, titled, “Biogenic Amines: myth or reality?”, examined the presence of biogenic amines in pig liquid feed on 33 commercial pig farms.

This unprecedented survey indicated that biogenic amines are an underestimated feed safety issue in swine nutrition with many practical implications like feed intake, mortality etc., and gives some clues to reduce the threat.

Dr Le Treut was praised for his ability to always explore new fields of investigation with originality and scientific rigor. He commented: “I am honored by this Prize and the recognition of these new areas of research: at a time when antibiotic usage in swine production is challenged, I am particularly pleased that such innovative topics were worthy of interest and to see that new preventive approaches could be considered and recognized by pig vets.”

Biogenic amines are toxic compounds resulting from the degradation of amino acids in feed by certain microorganisms (enterobacteria, coliforms..). In swine nutrition, little is known about the presence and significance of these substances in liquid feed and their impact on pig performance and health.

To summarise, the main findings of the wide on-farm survey (33 French farms), conducted by Lallemand over 2009-2010 were that:

Pig liquid feed

Pig liquid feed contamination with biogenic amines, and sometimes at high level, is a reality in farms.
There is great farm-to-farm heterogeneity in terms of contamination, but overall, farmers using industrial complete feed experience less contamination and more homogeneity than those on home mixing, especially with liquid by-products.
Wet corn is a major source of biogenic amines. This is certainly due to the three consecutives fermentation steps undergone by this material.
Blood analysis confirmed that biogenic amines pass through the gut into the blood.
The liquid feeding equipments: tank, distribution circuits etc. are an important source of contamination (certainly due to the presence of biofilms).
Finally, this study, based on the analysis of 10 different substances allowed to design a predictive model of contamination level based on only 3 substances (putrescine, cadaverin, tyramine). This model can lead to potential cost savings on analysis.

This study finally led to draw some recommendations to limit biogenic amines in pig feed:

To take extra care of the cleanliness of the equipments, distribution circuits and fermentation tanks.
To keep under control the fermentation of wet corn silage, by-products, the pre-fermented feed and fermented feed.

Finally, the authors mention that the use of the probiotic bacteria Pedioccoccus acidilactici MA 18/5M (BACTOCELL®), associated to thorough disinfection and cleaning of the equipment, brought down the level of biogenic amines contamination in farms, improving feed intake and digestive troubles (diarrheas), and mortality.