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Nutritional alternatives to mitigate heat stress

Published: February 27, 2023
Mike Persia (Virginia Tech) talks about the benefits of Direct-Fed Microbials (also Sulfur Amino Acid supplementation) to help manage the adverse effects of heat stress, in this interview during IPPE 2023 in Atlanta, USA.
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Mike Persia
Virginia Tech
Virginia Tech
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Christoph Hutter
ADDCON
30 de octubre de 2025
In other direction, we have a different problem. But it could lead to the same goal.
IN Europe, with no peak trimming, we see that the hens consume more, but drink less. Due to the nipple not fit to the peaks anymore.
Here we're going more and more to increase moisture in the feed just before entering the barn. And so we have higher feed intake, less separation, and better water supply to the birds.
Birds as well dont like feed under 12% moisture
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Ali Afsar
Evonik Animal Nutrition
Evonik Animal Nutrition
3 de noviembre de 2025
Apart from using additives like organic acids, pro-prebiotics, GAA, and betaine, my experience highlights two fundamental nutritional strategies that are effective and have been validated through extensive testing on large farms:

-Balancing Digestible Amino Acids: Increasing the levels of digestible sulfur amino acids (SID SAA) as mentioned before and arginine (SID Arg) , which enhances blood circulation in the intestines (leading to more oxygen circulation and less oxidative stress) and in peripheral organs, which aids in heat dissipation. Additionally, the application of real-time analysis of raw materials is crucial to achieve best balance and avoid excess protein intake, which can lead to increased heat production.

-Electrolyte Balance: While maintaining a well-balanced electrolyte profile is important , simply replacing soda with salt is not sufficient. Especially during the acute phase of heat stress, urinary excretion of potassium (K) tends to increase significantly. Therefore, ensuring adequate potassium levels in the diet is vital, potentially within the range of 750 to 850 mg/kg.
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