News and analysis for the global poultry industry.
Ioannis Mavromichalis

Ioannis Mavromichalis

Ioannis Mavromichalis, Ph.D., is an animal nutrition industry consultant. To contact Mavromichalis, email imavromichalis@icloud.com.

ARTICLES

rice bran

Understanding rice bran in pig, poultry feeds

Rice bran is an atypical ingredient: it has excellent nutritive value, but it is undervalued by most nutritionists and the commodities market.
Rice bran is a misnomer, or rather a confusing term as it can encompass a range of rice by-products at variable concentrations. It is a very atypical ingredient: it has excellent nutritive value, but it is undervalued by most nutritionists; it is widely available, but hardly traded in the commodities market.
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Cage-free-white-hens.jpg

7 cage-free layer nutrition issues that require attention

We must adjust our thinking on feeding hens housed in cage-free systems to allow for their increased movement, social interaction and exposure to environmental hazards.
Cage free does not necessarily mean free-range layers. Hens are still kept in-house on floors with bedding material or in open aviaries (multi-storied cages with open access).
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hands holding up enzymes

What are the major enzymes used in poultry feeds?

Nutrition professionals take for granted knowledge about enzymes, but not everyone knows which are the main commercial products as there is a plethora of products called enzymes on the market.
There are three major classes of enzymes, each aiming to improve digestibility of one of the three most expensive nutrients in animal feed.
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layer mash chicken feed
FEED MANUFACTURING

Mash or crumbled feed for layers?

With half the world feeding mash feed to layers, and the other half feeding crumbles, which feed form is better than the other, and why?
When it comes to feed form -- mash or crumbles -- most research work has been conducted with broilers. For laying hens, not only is research scarce, but it is very inconclusive, too.
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avian flu countdown Aug 27

Poultry digestive health: Fish meal poisoning symptoms, advice

Poultry consuming diets rich in fish meal often exhibit symptoms of fish meal poisoning evidenced by gizzard erosion and black vomit.
Fish meal cooked at high temperatures for a prolonged time can be the source of a very powerful toxin, gizzerozine. Poultry consuming diets rich in fish meal often exhibit symptoms of fish meal poisoning evidenced by gizzard erosion and black vomit -- what is the best advice when fish meal is suspected as being high in the toxin gizzerozine?
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white-broiler-chickens-in-house

5 ways to improve broiler feed efficiency beyond nutrition

After the feed arrives at the farm, there are five pointers that will help improve feed efficiency in broilers.
Improving feed efficiency is usually associated with improved profitability. Most measures to improve this useful index of productivity are by balancing the ratio between energy and amino acids, and (or) by improving nutrient digestibility by a number of different means. But, the feed efficiency rate can be improved even after the feed is mixed and delivered at the farm. Here are five tips to ensure broilers take the most out of the feed they are given on any farm.
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chickens-eating-feed.jpg

There is no such thing as precision nutrition

There is nothing precise about animal – or even human – nutrition, as we cannot claim we know everything there is to know about this great science that affects our daily lives.
I am noticing with amusement several new marketing trends, one of them claiming parenthood of the term precision nutrition. Perhaps this is what we usually call “know what you do” and such people have become so rare that if you happen to come across one you get so mesmerized that you believe it is “precision,” or magic, itself.
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