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1006704
Swine Grist
WESTERN & PRAIRIE EDITION A PERIODIC NEWSLETTER PRODUCED BY GRAND VALLEY FORTIFIERS VOLUME 25, ISSUE 3 | WINTER 2023
Dear Friends, As we soon wrap up calendar year 2023, we know that in some parts of the Prairies there was a bountiful harvest, and in other parts meager. The same variability will also exist in terms of crop quality. Please review the article by Samuel Waititu to brush up on your knowledge of mycotoxins and the various strategies to consider as we work together to incorporate the 2023 harvest into performance orientated feed rations on farm. In this edition of the Grist, we are pleased to welcome Aline Pereira MSc., poultry nutritionist, to our growing team of nutritionists as well as JP Thibault who has taken on the role of Business Development Manager for Direct Source Commodities and a successor to Steve McGuffin who plans to retire in 2024. As Grand Valley Fortifiers enters its 64th year of operation in 2024, we are embracing the reality that a number of our three and four decade tenured team members are looking forward to a new season in retirement. One of those is our dearly loved and sincerely appreciated PhD monogastric nutritionists, Dr. Martin Clunies. Words can not express the gratitude that we, at GVF as well as the swine and poultry producers that Martin has worked with across the country and around the globe, have for the way Martin’s advice and nutritional expertise has improved the performance, productivity and profitability of their herds and flocks. Indeed, beyond that, Martin has become a friend to so many of us and has personified the “Humble Confidence” that we at GVF aspire to exude. Please join us in thanking Martin for his tireless work in the industry and wish him and his wife, Estelle smooth sailing as they literally sail into a new season of life together. David Ross and I, as well as the entire GVF family want to wish you are yours a very Blessed Christmas and a New Year filled with much love, health, prosperity and happiness. Sincerely, Ian Ross, President & CEO, GVF group of companies
MITIGATING THE RISKS OF MYCOTOXINS
by: DR. SAMUEL WAITITU Monogastric Nutrition, Fortified Nutrition Ltd.
M
ycotoxicology, the study of mycotoxins, is a very broad area of science. The aim of this article is not to delve into finer details but rather to simplify our understanding of the definition, role, and control of the negative effects of mycotoxins in swine. Pigs are very sensitive to mycotoxins and exposure through feed can lead to feed refusal, compromised fertility, immune system suppression, damage to internal organs, respiratory difficulties, and reduced growth performance. In a farrow-to-finish farm, feeding mycotoxin contaminated feed can cause up to $30 to $50 reduction in net returns/sow/year.
What are Mycotoxins?
Mycology is the study of fungi. There are three types of fungi: molds, yeasts, and mushrooms. Molds are the main source of myco-toxins (toxins from fungi). Even though all mycotoxins are of fungal origin, not all toxic compounds produced by fungi are called mycotoxins. Fungal products toxic
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to bacteria (such as penicillin) are called antibiotics, whereas those toxic to plants are called phytotoxins. Interestingly, ethanol is a fungal product but is mostly toxic in high concentrations. Moreover, toxic compounds produced by mushrooms are called poisons and not mycotoxins. Therefore, a precise definition of mycotoxins is they are chemicals produced by fungi and are toxic to animals in low concentrations. It is important to emphasize that mycotoxins can be fatal in low concentrations.
Mycotoxins of major interest
There are over 500 known mycotoxins and thousands that are unknown or masked within other compounds. The mycotoxins of major concern (Figure 1, adapted from Malhotra et al., 2014) in Canada are produced by 4 main fungi: a. Aspergillus: produces aflatoxins and ochratoxins
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Fig 1.