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Poultry gut health
The efficient conversion of feed into its basic components for optimal nutrient absorption is vital for both broiler and broiler breeder production and welfare. Gut health, an intricate and complex area combining nutrition, microbiology, immunology and physiology, has a key role to play. When gut health is compromised, digestion and nutrient absorption are affected which, in turn, can have a detrimental effect on feed conversion leading to economic loss and a greater susceptibility to disease. In addition, recent changes in legislation on the use of antimicrobials, differing feed requirements and more efficient birds highlight the need for a better understanding of gut function and gut health.
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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Introduction Within livestock production, feed accounts for 65 to 70 % of the total cost of production; however, despite constant efforts to achieve the safety of food intended for animal production, there are still factors that diminish its quality, such as biological pathogens (such as Salmonella spp., E. coli, Listeria spp., Campylobacter spp.), chemical substances (fungicides, herbicides, and insecticides), and presence of fungi (Fusarium, Penicillium, Mucor etc.)(1). Fungal...
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The use of barley in broiler diets is limited because of the presence of β-glucans, which negatively influence nutrient utilisation and bird performance. These negative effects may be partly overcome by exogenous carbohydrases containing β-glucanases. In the current study, the influence of a multi-component carbohydrase (Ronozyme multigrain, DSM Nutritional Products, Singapore) on nitrogen-corrected apparent metabolisable energy (AMEn; assay 1), and, apparent ileal digestibility...
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The composition of gastrointestinal microbiota has been demonstrated to affect behaviour and vice versa (Neufeld et al., 2011; Berthoud, 2008). In free-range laying hens, the individual preference to range can lead to characteristic sub-populations of the flock (Hinch & Lee, 2011). The purpose of this study was to investigate the impact of ranging behaviour on caecal microbiota in laying hens. A flock of sixty ISA Brown laying hens was housed in the UNE research facilities with...
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Gastrointestinal (GI) passage rate of feed influences nutrient digestibility and absorption, as it dictates the amount of time the digesta are exposed to digestive enzymes, the intestinal villi and microbial fermentation (Vergara et al. 1989; Svihus 2010). The titanium dioxide (TO 2 ) marker technique is currently widely practiced for evaluation of GI passage rate. However, this method requires euthanising the bird to obtain digesta samples, which has negative implications from an...
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The UGA International Poultry Short Course provides a comprehensive overview of modern poultry production.
It is intended for those individuals with limited knowledge of poultry, as well as those who might have considerable experience in one area of poultry production but would like to have a better...
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by Benjamin Geist
With just over 120 days until APSS 2026, planning for the 37th annual Australian Poultry Science Symposium is progressing smoothly. Next year’s event will return to the University of Sydney Business School – Belinda Hutchinson Building (H70) on the Camperdown Campus, and we’re excited to once again welcome delegates for 2.5 days of presentations, posters, networking, and industry engagement.
The theme for APSS 2026...
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I. INTRODUCTION Necrotic enteritis (NE) is of great concern to the poultry industry due to its deteriorating impact on production and increasing mortality, resulting in a US$6 billion global economic loss (Wade and Keyburn, 2015). The causative agent of NE is Clostridium perfringens, a gram-positive spore-forming anaerobic bacterium. The subclinical form of NE is financially more devastating than the clinical form. This is due to a lack of obvious symptoms resulting in a delayed...
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I. INTRODUCTION Protease enzymes can improve the dietary protein utilization. Therefore, it is possible to decrease the level of dietary protein to save on feed cost while maintaining performance, reduce nitrogen excretion in the environment, and minimize the risk of enteric infections. The objective of this study was to evaluate the effect of a protease on performance and intestinal health of broiler chickens fed a standard diet or a low-density diet. II. MATERIALS AND...
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Footpad dermatitis (FPD) is considered an animal welfare issue. Wet and sticky litter are major causes of FPD (Taira et al., 2014). Our previous study showed that a well selected probiotic strain Bacillus subtilis 29784 can improve broiler performance by modulating intestinal microbiota and intestinal inflammatory status (Ghane et al., 2017; Jacquier et al., 2016). We hypothesize that the previous demonstrated benefits of B. subtilis 29784 on gut health will improve litter quality and may...
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I. INTRODUCTION Clay minerals and yeast fractions are regarded as effective tools for the prevention of the negative effects of toxic compounds in animal feed and production (Kubena et al., 1990; Lillehoj et al., 2016; M’Sadeq et al., 2015; Phillips et al., 1988). Clays and yeast fractions, when added to animal feeds, can adsorb certain toxic materials in the gastrointestinal tract of the animals, reducing their bioavailability. Dietary supplementation with clays has been shown...
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I. INTRODUCTION In poultry meat production birds face several challenges, all of which disturb the normal functioning of the organism, with the gastrointestinal tract being the most affected. This results in impaired absorption of nutrients, leading to reduced performance and increased mortality. Previously general practice was to feed antibiotics at sub-therapeutic levels to enable birds to cope with the challenges during growth (Wati et al. 2015). With the European Union passing...
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(Mandarin) Strengthening Pellets for Better Feed Performance
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Introduction Protein besides biologically active compound in the body exists as enzymes & hormones, also plays important role in physiology of living organisms. Soybean meal (SBM) is complete conventional protein source with well-balanced amino acids profile. On the other hand due to increase in prices of SBM, alternative sources like groundnut cake, sunflower meal, guar meal, rapeseed cake, cotton seed cake, copra meal, maize gluten, DDGS etc. are used, but they have...
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In the world of animal feed manufacturing, some parameters shout: protein levels, energy values, additive profiles. Others whisper, quietly shaping performance from behind the scenes. Particle size is one of those silent drivers. And yet, for monogastric species like pigs and poultry, it can be the difference between optimal feed conversion and costly inefficiencies. I’ve spent over three decades in feed process technology, and if there’s one...
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Pullets to Layers – Ensuring a Smooth Transition in Cage-Free Systems
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1. Introduction There is considerable interest in the successful development of low protein diets for broiler chickens, which axiomatically contain high inclusions of supplemental amino acids. This is because low protein diets have the potential to generate economic, environmental and bird welfare advantages. Formulation of low protein diets are usually achieved by decreasing...
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April Santos (Evonik Animal Nutrition) explains how tributyrin, a form of butyric acid, enhances gut integrity, immune function, and nutrient absorption in poultry. Learn how this solution replaces antibiotic growth promoters for a more sustainable and safe food future....
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1. Introduction Intestinal health is a crucial parameter in ensuring the health of birds and the optimal use of nutrients because of its various functions, namely the digestion and absorption of nutrients, the secretion of mucins and immunoglobulins, and selective protection against pathogens [1]. This topic has gained even more interest in poultry production because of increasing demands for economic efficiency, animal welfare, food safety, reducing environmental impact, and...
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1. Introduction The misuse and overuse of antibiotics in humans and livestock animals are primary drivers of antimicrobial resistance [1,2], which is projected to become the leading cause of global human mortality by 2050 [1]. Consequently, the subtherapeutic use of medically important antibiotics for growth promotion and disease prevention in livestock has been banned in an increasing number of countries; however, this ban has inadvertently increased the risk of infections in...
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Mycotoxin detection: VICAM builds a stronger and more sustainable future for food
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1. Introduction Recent trends in food animal production emphasize reducing antibiotic use due to the growing threat of antimicrobial-resistant bacteria [1,2]. Consequently, there is a critical need for sustainable alternatives that promote growth and health while maintaining production efficiency. Phytobiotics are plant-derived compounds that have emerged as promising candidates for this role [3]. Unlike antibiotics, phytobiotics do not contribute to antimicrobial resistance or...
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1. Introduction Enzymes have been developed as feed additives to improve the digestion and absorption of nutrients. The first phytase products entered the market in 1991 and have since been used extensively in monogastrics. Supplementation with exogenous phytases in cereal vegetable-based diets has been shown to improve monogastric animal production and can also contribute to breaking down phytates. This reduces phosphorus contamination and improves the utilization of phytic...
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