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Poultry nutrition - Other additives
Alternative feed additives have promising importance in broiler production due to the ban on the use of certain antibiotics. The most used antibiotic alternatives in broiler production are phytogenics, organic acids, prebiotics, probiotics, enzymes, and their derivatives. Antibiotic alternatives have been reported to increase feed intake, stimulate digestion, improve feed efficiency, increase growth performance, and reduce the incidence of diseases by modulating the intestinal microbiota and immune system, inhibiting pathogens, and improving intestinal integrity. Simply, the gut microbiota is the target to raise the health benefits and growth-promoting effects of feed additives on broilers. Therefore, naturally available feed additives are promising antibiotic alternatives for broilers.
Compilation of a project KEY INFORMATION A series of 5 commercial feeding trials was performed from which 4 trials took place on commercial broiler farms growing between 300,000 and 420,000 broilers per cycle. Dietary protein was...
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1. Introduction The production of black soldier fly larvae (Hermetia illucens, BSFL) has been established globally in recent years. Advancements in production and processing technology have facilitated the large-scale rearing of BSFL, which can be attributed to the insect’s affinity to thrive in a wide array of organic substances [1]. These can include by-products from grain, oil seed and food processing, food waste and by-products from animal processing, and even manure...
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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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Yeast β-glucans consist of a β(1,3)-linked glucose backbone, with β(1,6)- linked side chains at different interval and sizes along the backbone. They are recognized by several receptors present on the surface of innate immune cells, such as the Dectin-1 receptor. Previous research done with crude yeast cell wall (YCW) extracts, have led to the description of β-glucans as immunestimulant molecules resulting in a strong activation of macrophages that secrete high levels of...
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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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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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1. Introduction Influenza A virus (IAV) is an enveloped RNA virus, a member of the Orthomyxoviri dae family, and is known to infect humans, mammals, and birds [1]. The virus is subtyped based on the antigenic cross-reactivity and sequence identity of two surface glycoproteins, namely, hemagglutinin (HA) and neuraminidase (NA) [2]. Excluding the recently identified H17N10 and H18N11 in bats, 16 HA and 9NAIAV subtypes have been identified in mammals and birds to date...
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In commercial egg production, production traits such as bodyweight (BW), feed intake and efficiency, and egg quality are targets that are critical to profitability. Assessment of average BW and uniformity are relatively straightforward measurements. Furthermore, it is well known that achieving target BW for the breed standard and minimising BW variation are key to producing greater egg mass and egg quality. It is more difficult to get an understanding of the variation in feed intake, egg...
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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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I. INTRODUCTION Low-protein diets for broiler chickens axiomatically contain high inclusions of supplemental amino acids and have the potential to generate economic, environmental and bird welfare advantages. Low-protein diets are usually formulated by reducing soybean meal inclusions and increasing inclusions of a range of supplemental amino acids. An alternative approach was adopted in the present study where dietary protein levels were reduced by the partial replacement of maize...
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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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Background Chicken may be enriched with 25-hydroxy D3 [25(OH)D3] and docosahexaenoic acid (DHA) to enhance the public's dietary intake. Objectives Two experiments (Expt.) were conducted to determine the potential and metabolic impacts of enriching both DHA and 25(OH)D3 in the tissues of broiler chickens. Methods In Expt. 1, 144 chicks (6 cages/treatment and 6 birds/cage) were fed a corn–soybean meal basal diet (BD), BD + 10,000 IU...
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Feather pecking is synonymous with economic and major welfare problems in the poultry industry and is positively associated with feather ingestion. In a choice-feeding experiment, laying hens showed a stronger preference for unwashed compared to washed feathers (McKeegan and Savory, 2001). The attraction toward unwashed feathers could be related to the preen oil produced by the uropygial glands located dorsally at the base of the tail. Preen oil covers the feathers during the process of...
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The 37th Annual Australian Poultry Science Symposium will take place from February 9th to 11th, 2026.
Planning is coming along nicely for APSS2026, and we have nine excellent invited speakers who are all very excited to be involved in the symposium next...
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Innovative Directions in Aflatoxin Testing Point to Measureable Gains in Quality Of Lab Data
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The poultry industry is under constant pressure to reduce antibiotic use due to the global threat of antimicrobial resistance (AMR). International bodies including WHO, FAO and OIE/WOAH have urged the adoption of non-antibiotic growth promoters to safeguard animal, human, and environmental health under the One Health approach. Among the alternatives, organic acids have consistently shown practical benefits: ? Mode of Action Lower gut pH, creating an unfavorable...
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Dr. Chandrasekaran discusses the challenges facing poultry production in India, including managing depletion rates and raw material contamination. He stresses the importance of adopting proactive approaches and standardized procedures to ensure consistent, high-quality production and support India’s growth in the global poultry industry....
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I. INTRODUCTION Body composition, more specifically breast muscle and the abdominal fat pad, at the end of the rearing period of breeder pullets seems to play an important role in egg production, lay persistency, and fertility in the laying phase. Management of feeding by changing feed allowance or nutrient composition of the breeder pullet’s diet during rearing can alter body composition at the onset of lay. Adequate dietary protein is necessary to have optimum ovary...
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Production of rearing and laying diets involves selection of good quality ingredients, formulating these ingredients accurately to the correct nutrient specification and manufacturing the feed to a uniform particle size (grist) which will support efficient feed intake. The starting point is sourcing the right raw materials. RAW MATERIALS • Establish the quality of the raw materials sourced through routine analyses. • Invest in quality raw materials, for...
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