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Enzymes in poultry nutrition

Enzymes are proteins involved in all anabolic and catabolic pathways of digestion and metabolism. Digestive enzymes are categorised as endogenous or exogenous. Endogenous enzymes are produced by the animal and exogenous enzymes are administered from outside. Enzyme supplementation decreases nutrient loss through excreta, reduces diets nutritional levels, improves nutrient availability; thus, enhances production efficiency and profitability. In addition, exogenous enzymes hydrolyse non-starch polysaccharides, increase the usage of feed energy, reduce negative impacts of non-digestive residues on digesta viscosity, and improve gut microbial ecosystem. Cellulase, glucanase, pectinase, xylanase, galactisidases, phytase, non-starch polysaccharides degrading enzymes, amylase, lipase, cellulase, and protease are the most common enzymes used in poultry feed.
Ludovic Lahaye
Ludovic Lahaye and 2 more
JEFO Nutrition Inc.
1 Introduction The rising number of recently reported human illnesses with bacterial infections resistant to multiple antibacterial agents has become a fundamental concern in recent years [1, 2]. This phenomenon has become a serious concern with regard to the emergence of antibiotic-resistant bacteria called “superbugs” [3, 4], especially when considering that humans only started using antibiotics in the past century with Sir Alexander Fleming’s discovery of...
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Advanced Bio-Agro Tech Ltd. (ABTL) and the Agharkar Research Institute of the Maharashtra Association for the Cultivation of Science (Department of Science & Technology, Government of India) have entered into a strategic research agreement. This pioneering initiative will...
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Bryden, W.L.
University of Queensland
University of Queensland
It has been shown that an ileal digestible phosphorus (IDP) value of 2.0 g/kg can support optimum bird performance (Li et al., 2017). However, the relationship of this value to dietary Ca concentration and phytase supplementation is still unclear. The aim of this study was to further clarify these interrelationships. Four hundred, day old, Ross, male broiler chicks were fed experimental diets based on wheat, sorghum, canola meal, soybean meal and meat and bone meal. The diets contained...
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Aaron Cowieson
Aaron Cowieson and 1 more
dsm-firmenich
I. INTRODUCTION Exogenous feed enzymes were first introduced as commercially-relevant feed additives in the 1980s with an initial focus on reduction of the antinutritional effects of high molecular weight soluble pentosans in wheat- and barley-based diets for young broiler chickens (Bedford & Partridge, 2010). Exogenous phytase was launched in the early 1990s to increase the digestibility of organic phosphorus and to reduce the antinutritional effects of phytic acid (Selle &...
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Robert Swick
Robert Swick and 3 more
University of New England
University of New England
Meat and bone meal (MBM) is a valuable source of protein, calcium and available phosphorus for broiler diets (Anwar et al., 2016). The use of MBM in broiler diets at levels above 50 g/kg minimizes the need for inclusion of inorganic P, thus reducing feed cost. Potential indigestibility of protein in MBM (Kim et al., 2012) may act as a predisposing factor for necrotic enteritis (NE). Increased production of nitrogenous bacterial metabolites including amines and ammonia in the hindgut may...
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Cadogan, D.J
Cadogan, D.J and 1 more
Feedworks
I. INTRODUCTION Bacillus-based probiotics have gained increased attention as alternatives to antibiotic growth promoters (AGP) to support broiler performance in systems aiming to reduce the use of antibiotics and maintain gut health and function. Combatting poor gut health and disease susceptibility in an era without antibiotics has been made increasingly difficult due to the increasing cost of commercial feed ingredients. This has forced some producers to use cheaper dietary...
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I. INTRODUCTION Xylans and cellulose are the predominant fibre-polysaccharides in animal feeds, and xylanases, together with phytases, are the most widely used supplemental microbial enzymes in feeds. Proteinaceous xylanase inhibitors (XI), primarily attributed to three types, Triticum aestivum xylanase inhibitor (TAXI), xylanase inhibiting protein (XIP) and thaumatin-like xylanase inhibitors (TLXI), are found in a wide range of plant feedstuffs, particularly cereals grains such as...
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Vivienne Inhuber
Alzchem Group AG
Challenges in poultry nutrition Today, commercial poultry nutrition no longer encompasses just the ‘pure’ delivery of the nutrients needed by the animals for their preservation, growth and health. It must also be flexible in adapting to changing statutory regulations and keeping up with increasing consumer demands – beginning with eliminating feed of animal origin by using carefully selected raw materials, reducing the use of drugs such as antibiotics, ensuring...
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Mycotoxins are toxic compounds produced by certain fungi that contaminate crops and animal feed under specific conditions. These toxins, such as aflatoxins, deoxynivalenol (DON), and ochratoxin A, pose serious health risks to animals and humans. Among their many effects, some mycotoxins directly impair the immune system, causing...
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Oketch Elijah Ogola
Chungnam National University
Chungnam National University
Author details: 1 Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, South Korea; 2 Kemin Animal Nutrition and Health, Asia Pacific, Seongnam-si, Gyeonggi-do, South Korea. Introduction Nutrient supply to meet requirements accounts for the largest share of poultry production costs, within which protein (i.e., AA) supply makes up the second largest portion. The feeding of reduced protein diets is targeted to...
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Doug Korver
University of Alberta
University of Alberta
Doug Korver (University of Alberta) spoke on the design of diets with essential oils, prebiotics, probiotics and enzymes, as well as the evaluation of the performance under commercial conditions, during IPPE 2019 in Atlanta, USA....
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Please inform me: if I use 5000 IU/Kg feedT, how should I calculate its energy and protein in the matrix value? ...
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Sumit Sipany
ABTL Advanced Bio-Agro Tech Ltd
ABTL Advanced Bio-Agro Tech Ltd
Introduction to Immunity Immunity refers to the body's ability to resist or defend against infections, diseases, and other unwanted biological invasions. There are two main types of immunity. Innate immunity is the host's first line of defense against invading pathogens but some pathogens particularly immunosuppressive viruses have evolved sophisticated mechanisms to evade the host's innate immune responses and survive within the host. Adaptive Immunity targets...
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Kurt Van de Mierop (Nutrex) talks about an advanced enzyme solution that improves feed efficiency, reduces production costs, and optimizes nutrient absorption in monogastric animals. ...
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Dr. Piotr Stanislawski shares his experience with Engormix members regarding the use of enzymes in poultry diets and gives his advice on how to do it properly....
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Mingan Choct
University of New England
University of New England
INTRODUCTION Cereal grains and vegetable protein sources contain between 10-75% of non-starch polysaccharides (NSP). NSP in cereals form part of the cell wall structure and in vegetable proteins, such as legumes, may also play a role as an energy storage material. As far as monogastric animal nutrition is concerned, NSP as the major part of fibre (fibre is the sum of NSP and lignin) are regarded as feed components that...
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Dr. Peter Selle     By Prof. Eugeni Roura President, WPSA Australian Branch Dr. Peter Selle has been a dedicated and passionate figure in the Australian poultry industry for over...
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Mike Persia
Virginia Tech
Virginia Tech
Mike Persia (Virginia Tech) discusses direct-fed microbials, their modes of action, and their positive impact on energy and eggshell quality in this Engormix interview during IPPE 2025 in Atlanta, USA....
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Chongxiao (Sean) Chen
University of Georgia
University of Georgia
In this Engormix interview during IPPE 2025 in Atlanta, USA, Chongxiao (Sean) Chen (University of Georgia) offers information on resources provided by his UGA Poultry Science group: a Poultry Nutrition 101 Course and a newsletter....
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Joaquin Armando Paulino Paniagua
Universidad ISA (Instituto Superior de Agricultura)
Universidad ISA (Instituto Superior de Agricultura)
Introduction: Due to the constant genetic evolution in both the production of broilers, nutritionists must constantly adapt their nutritional recommendations and feeding programs to maximize economic results at all times. These management and nutrition decisions must take into account: the animal (potential for growth), environmental conditions and the composition of the feed, which affect feed consumption and, consequently, the performance of birds. And economic...
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