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.
Poultry experiencing heat stress due to panting can experience mineral loss, particularly sodium, potassium, and phosphorus. Panting increases carbon dioxide loss, leading to respiratory alkalosis, which can disrupt mineral balance and increase mineral excretion.
At this stage, Mineral supplements through water will be immediately absorbed, and the deficiency can be removed.
@Hiren Pancholi I almost agree in your comment, but never supplemented minerals trough water, perhaps electrolytes but not K,P. At some extent CaCO2 dissolved naturally in drinking water.
Livestock Industry Foundation for Africa,a livestock knowledge sharing NGO formed in Nigeria has as part of her initiative climate smart feeding as tool to mitigate climate change vulnerabilities, and reduction of feed cost in poultry. Integration of dietary betaine with this procedure significantly reduced feed cost and improved productivity and stock livability in hot weather's The NGO is headed by Dr Stephen Adejoro with over 45 years practical experiences in the tropics. Livestock Industry Foundation for Africa ,since 2019 have had training in 48 locations in Africa ,including Nigeria where the programme started in 2019. So far the NGO had visited 20 countries in Africa,mostly from West Africa and East Africa. This year the country will further visit farmers in Tanzania,Uganda and Rwanda . This NGO is still interested in collaboration with international organization that cherished improvement in Animal food security. To follow all our activities in Africa link to https://blog.lifango.org for contact write lifango48@gmail.com Attention Dr Stephen Adejoro President
@Dr Kotaiah Talapaneni Broilers without feed for 6 hours or more will get hungry, then at the moment they get access to feed will overfill their CROP to maximum expansion, to the size of a tennis ball. They will eat as much to fullfill their bag capacity in order to have plenty of available feed for a longer period of time.
@M.C. Fernando R. Feuchter A. You are absolutely right. Chickens are not stupid and they anticipate feed restriction. So, once feed is available they take advantage of it. After all, chickens are not concerned about feed conversion, they are concerned about survival. For this very reason they don't eat in the peak of the highest temperature as some poultry producers believe, they stay calm drinking water as needed and exposing to air movement if available, otherwise they will pant and open their wings. Feed restriction is a non-sense because heat stress is not a nutritional problem, it is an environmental problem. Have tunnel-ventilation at thermo-neutral temperature, period.
@Dr. Sudheer May be YES, any published reference to share? Specially for Mexico and Latinamerica countries where high heat temperature is a limited factor. When there is heat broilers will skip noon meals and will keep eating late in the evening. But over lighting at night it is also another canibalistic problem.
@Dr. Sudheer . It all depends on what is the definition of "good results". Several poultry companies in Colombia, South America, are truly experts in the feed restriction of broilers that are processed at 38-40 days, and their goal for "good results" is the lowest possible FCR independently of the cost per kg of live weight. However, for poultry companies whose goal for "good results" is the lowest cost per kg of live weight (or cost per kg of breast, or whatever other parameter) their FCR may be higher, but their cost of production meets their goal. In other words, profitability of the business is not necessarily the same as lower FCR manipulated through feed restriction.
@Nelson Ruíz Hi, what I meant by “good results” is reduction in mortality of heavy birds. If I don’t restrict the feed, I lose more numbers of birds having very good body weight of 2 kg plus. Naturally, my FCR and overall cost of production will reduce when I save these high body weight birds from dying.
AAPSA Alimentos y Aditivos Pecuarios S. A. de C. V.
19 de junio de 2025
Adding Sulphur amino acids will increase the feed cost. In my experience adding betaine is cheaper and very effective solution as long as you keep the recommended levels of Methionine. You just avoid using Methionine as NH3 producer.
@Luis De Uriarte Using any pure amino acid is justifiable on cost grounds; just make sure you are using digestible amino acids (preferably Standardised Ileal) as your target / specification. Their use will allow reduction of crude protein, that in itself will reduce nitrogen excretion and ammonia production. Additionally, of course, Methionine is the precursor to glutathione, the primary antioxidant in tissues and therefore in great demand in heat-stress condition. The work done by Evonik clearly shows cost-effective performance benefits by feeding amino acids above standard recommendations in stress conditions. As birds under stress conditions consume less feed, the daily requirement for SID amino acids is not met, so growth declines and FCR increases. Increasing amino acid density in feed combats this.