Nuance Biotechnology, a rapidly emerging player in the feed additives industry, has made significant strides in 2024 by acquiring two prominent French companies—Global Nutrition International and NutriConcept. This strategic move has bolstered their global footprint, expanded R&D capabilities and facilitated their entry into key markets, including India. Poultry Creations, along with other poultry media, had the privilege of speaking with Dr. Nemanja Todorovic, Chief Business Officer and Mr. Joginder Singh Uppal, Business Director, South Asia, during the 35th AGM of the Poultry Federation of India in Gurugram to discuss their vision, innovations and plans for the Indian market

Entering the Indian Market and Expansion Strategies:

When did Nuance Biotech enter the Indian market and what are your strategies for expansion?
Dr. Nemanja Todorovic: India is not just a country; it is a continent in itself with immense potential in biotechnology and livestock. Recognizing this, we have appointed knowledgeable professionals like Mr. Uppal to lead our initiatives. Our key strategies include:
1. Forging strategic partnerships with key industry players.
2. Expanding distribution networks for broader market penetration.
3. Collaborating with research institutions to localize our products.
4. Educating farmers on the benefits of postbiotics and other innovations tailored to Indian conditions.”

Joginder Singh Uppal: “We launched our South Asian operations in June 2024 with a strong focus on poultry and dairy. Our flagship products, Nu.biom Aves for poultry and Nu.biom Bos for dairy, enhance resilience, performance and farm profitability. Our goal is to empower farmers through innovative solutions backed by scientific research and technical expertise.”

Understanding Postbiotics

Question: Can you explain the difference between postbiotics and other types of biotics?
Dr. Nemanja Todorovic: “Biotics are broadly categorized into prebiotics, probiotics, and postbiotics:
1. Prebiotics serve as a nutrient source for beneficial gut bacteria.
2. Probiotics are live microorganisms that improve gut health.
3. Postbiotics are metabolic byproducts of probiotics, offering stable and targeted benefits without the viability concerns of probiotics.

Our postbiotics enhance gut microbiota balance, optimize nutrient utilization and contribute to immune modulation. Imagine prebiotics as soil, probiotics as rice growing in the field and postbiotics as rice noodles ready for consumption.”

Tailoring Solutions for the Indian Market

Question: How does Nuance Biotech cater to the unique needs of the Indian market?
Joginder Singh Uppal: “We offer tailored solutions to address challenges in poultry and dairy farming, such as:
Postbiotics: A novel concept with proven benefits for immunity, egg quality and overall productivity.
Global Biotics: Products like mycotoxin binders (e.g., Global Fix) and acidifiers that address vital industry concerns.

Our goal is to support farmers with innovative products backed by research, while also educating them about sustainable and profitable farming practices.”

Market Strategy and Customer Engagement

Question: Who is your primary target in the market—feed mills, breeders, GP operators, commercial broiler farmers or integrators?
Joginder Singh Uppal: “Our primary focus is on feed mills since our products are predominantly feed additives. About 60-70% of the industry relies on feed, making this our initial target. Our secondary focus is integrators and large-scale farmers, including layer farmers who produce their own feed. Products like NutriGut and Globacid DW are designed for these segments.”

Unique Selling Proposition and Market Entry

Question: With several toxin binders and acidifiers in the market, what makes your products stand out?
Dr. Nemanja Todorovic: “Our precision production technology sets us apart. From raw material selection and fermentation to production and quality control, every step is meticulously executed. Our R&D-driven approach ensures high efficacy. Global Nutrition, part of our portfolio, has been a trusted name since 2002, exporting to over 40 countries. This global presence underscores the reliability and effectiveness of our products.”

Question: Have your products been introduced to the Indian market yet?
Dr. Nemanja Todorovic: “We commenced operations in mid-2024, focusing on key partnerships and collaborations. Our first consignment is scheduled to arrive next month, allowing us to engage with clients and initiate trials. Discussions with several companies are already underway.”

Future Innovations and Long-Term Vision

Question: Can you share upcoming innovations or product launches for the Indian poultry sector?
Joginder Singh Uppal: “Our focus extends beyond product launches—we provide integrated solutions. Enhancing animal resilience is at the core of our philosophy. By leveraging our expertise in microbial metabolites, we develop solutions tailored to specific market needs. While poultry and dairy remain our primary sectors, we are continuously evolving to address industry challenges.”

Question: What are your long-term plans for the Indian market?
Dr. Nemanja Todorovic: “Our strategy is structured around three key phases:
1. Establishing Partnerships – We have made significant progress in forging valuable collaborations.
2. Regional Expansion – In addition to India, we are targeting Pakistan, Bangladesh, Nepal and Sri Lanka.
3. Direct Sales and Marketing – While working with distributors for outreach, we also plan to engage directly with key accounts representing 50-60% of the poultry industry.”

Sustainability and Industry Challenges

Question: What steps is Nuance Biotech taking to ensure product sustainability?
Dr. Nemanja Todorovic: “Sustainability is at the core of our innovation strategy. We focus on enhancing nutrient utilization, reducing waste and minimizing environmental impact. For example, our solutions target ammonia control in poultry and aquaculture. Additionally, our postbiotic solutions have shown promise in reducing methane emissions in dairy cattle, and we plan to conduct further trials in India with leading research institutions.”

Question: Unlike poultry, the Indian dairy sector consists largely of unorganized small farmers. How does Nuance Biotechnology plan to support them?
Dr. Nemanja Todorovic: “About 80% of India’s dairy farmers operate at a small scale. We aim to reach them through a three-pronged strategy:
1. Strengthening our distribution network to enhance accessibility.
2. Focusing on large dairy operations that drive significant market influence.
3. Leveraging veterinary shops as a direct channel for small-scale farmers, a model that has succeeded in similar markets.”

In conclusion, Nuance Biotech is positioning itself as a pioneering force in the feed additives sector, committed to innovation, sustainability and farmer education. As they expand their presence in India and beyond, their solutions promise to enhance efficiency, profitability and resilience in the livestock industry.

Introduction
The poultry industry has seen exponential growth over the last few decades, driven by the demand for high-quality protein sources such as chicken. However, the intensification of poultry production has also brought challenges, particularly in managing the health of broilers, which are reared under conditions that can predispose them to stress and diseases. Among these, gut health is a critical area of focus because it directly influences the overall health, performance, and productivity of the birds.

Traditionally, antibiotics have been used extensively to manage gut health issues and prevent diseases. However, the rise of antimicrobial resistance (AMR) and global consumer demand for antibiotic-free poultry has necessitated a shift toward non-antibiotic solutions. Phytomolecules, bioactive compounds derived from plants, have emerged as a promising alternative for maintaining gut health in broilers. This article delves into the significance of gut health in broilers, explores the role of phytomolecules and highlights their effectiveness as a sustainable solution in modern poultry operations.

Understanding Gut Health in Broilers
Gut health refers to the optimal functioning of the gastrointestinal (GI) tract, which is essential for nutrient absorption, immune response, and overall well-being of broilers. In poultry, the gut is not only responsible for digestion but also acts as a key barrier against pathogens, playing a critical role in the immune system. (Image 1)

(Image 1) Source: Guillermo Tellez-Isaias et al 2023, Engormix

A healthy gut consists of a balanced microbial population (microbiota), an intact intestinal barrier, and a well-regulated immune response. Any imbalance in these components can lead to gut dysfunction, manifesting as poor nutrient absorption, diarrhoea, increased susceptibility to infections, and reduced growth performance.

Common gut health challenges in broilers include:
1. Dysbiosis: An imbalance in the gut microbiota, often caused by stress, poor nutrition, or infections, can disrupt gut function.
2. Enteric diseases: Diseases like necrotic enteritis (caused by Clostridium perfringens) and coccidiosis (caused by Eimeria species) can severely damage the intestinal lining.
3. Leaky gut syndrome: Increased intestinal permeability can allow harmful substances to pass into the bloodstream, triggering inflammation and immune responses.
4. Poor nutrient absorption: Impaired gut function can reduce the efficiency of nutrient absorption, affecting growth rates and feed conversion ratios.

Source: Self Field observations

Maintaining optimal gut health is, therefore, essential to achieving high productivity, reducing mortality, and ensuring efficient feed utilization in broilers.

The Role of Phytomolecules in Gut Health
Phytomolecules are bioactive compounds derived from plants, including essential oils, alkaloids, flavonoids, tannins, and terpenes. These molecules possess a wide range of biological activities, such as antimicrobial, antioxidant, anti-inflammatory, and immunomodulatory properties, making them effective in maintaining and improving gut health.

Over the years, research has demonstrated the potential of phytomolecules to support gut health in poultry. Several studies have shown that these plant-derived compounds can modulate the gut microbiota, strengthen the intestinal barrier, and enhance immune responses, thus promoting better growth and health in broilers.

1. Antimicrobial Properties
One of the primary benefits of phytomolecules is their ability to exert antimicrobial effects. Many essential oils and plant extracts contain compounds like carvacrol, thymol, and eugenol, which have been found to inhibit the growth of pathogenic bacteria such as Escherichia coli, Salmonella, and Clostridium perfringens. These antimicrobial properties help maintain a balanced gut microbiota, reducing the risk of infections and dysbiosis. (Image 2)

A study by Burt (2004) demonstrated that essential oils containing carvacrol and thymol are effective in inhibiting the growth of Salmonella and Campylobacter in broilers. Similarly, Liu et al. (2012) found that phytogenic compounds such as oregano and thyme oils can significantly reduce the colonization of pathogenic bacteria in the poultry gut.

2. Antioxidant Effects
Oxidative stress is a common challenge in modern poultry production, especially under intensive farming conditions. Excessive oxidative stress can damage the intestinal lining, leading to inflammation and compromised gut integrity. Phytomolecules such as flavonoids and phenolic acids have strong antioxidant properties, which help neutralize free radicals and protect the intestinal cells from oxidative damage. (Image 3)

Flavonoids, such as quercetin and catechins, have been shown to enhance the activity of antioxidant enzymes, reduce inflammation, and promote gut integrity. In a study conducted by Rehman et al. (2020), supplementation with flavonoid-rich plant extracts improved the gut health of broilers by reducing oxidative stress and enhancing the intestinal barrier function.

(Image 3) Source: Yammine, Jina et al. Heliyon, Volume 8, Issue 12, e12472

3. Anti-inflammatory Action
Chronic inflammation in the gut can lead to poor nutrient absorption, tissue damage, and increased susceptibility to infections. Phytomolecules possess anti-inflammatory properties that can mitigate gut inflammation and support tissue repair. Compounds such as curcumin (found in turmeric) and gingerols (found in ginger) are well-known for their anti-inflammatory effects. A study by Khaleel et al. (2021) demonstrated that dietary supplementation with curcumin significantly reduced gut inflammation in broilers and improved their overall performance. Similarly, ginger extract has been found to decrease pro-inflammatory cytokines and enhance gut health in poultry.

4. Enhancing the Intestinal Barrier
The intestinal barrier is the first line of defence against harmful pathogens and toxins. Phytomolecules, particularly tannins and essential oils, can strengthen the intestinal lining by promoting the production of tight junction proteins that seal the spaces between intestinal cells. This helps reduce intestinal permeability (leaky gut) and prevents the translocation of harmful substances into the bloodstream. (Image 4)

In a study by Yang et al. (2015), tannin-rich plant extracts were found to enhance the expression of tight junction proteins in the intestinal mucosa of broilers, resulting in improved gut integrity and reduced incidence of leaky gut.

5. Modulating the Gut Microbiota
Phytomolecules have prebiotic effects that promote the growth of beneficial gut bacteria, such as Lactobacillus and Bifidobacterium, while inhibiting pathogenic bacteria. A balanced gut microbiota plays a crucial role in maintaining gut health by enhancing nutrient absorption, stimulating the immune system, and protecting against infections.

Research by Windisch et al. (2008) found that phytogenic feed additives, including essential oils and polyphenols, can modulate the gut microbiota by promoting beneficial bacteria and reducing pathogenic bacterial populations. This microbiota modulation helps maintain gut homeostasis, which is essential for optimal growth and performance in broilers.

Phytomolecules in Commercial Broiler Production
The use of phytomolecules as feed additives in broiler production is gaining popularity as a natural and effective alternative to antibiotics. Various commercial phytogenic products containing essential oils, plant extracts, and other bioactive compounds are now available for use in poultry diets.

Benefits of Phytomolecules Supplementation
1. Improved Growth Performance: Several studies have shown that phytomolecules supplementation can enhance growth rates, feed conversion ratios, and overall performance in broilers. For example, Yang et al. (2015) reported that broilers supplemented with a blend of essential oils and polyphenols exhibited higher weight gain and better feed efficiency.

2. Reduced Mortality and Morbidity: By promoting gut health and enhancing the immune system, phytomolecules help reduce the incidence of enteric diseases and lower mortality rates in broilers. A study by Ciftci et al. (2010) found that broilers fed with a diet containing thyme and rosemary essential oils had a lower incidence of necrotic enteritis and improved survival rates.

3. Enhanced Feed Efficiency: Phytomolecules improve nutrient absorption by maintaining gut integrity and supporting the activity of digestive enzymes. This leads to better feed efficiency and reduced feed costs, which are critical factors in commercial broiler production.

4. Sustainability and Consumer Acceptance: The use of phytogenic feed additives aligns with the growing consumer demand for antibiotic-free poultry products. As these additives are derived from natural sources, they are perceived as safe and environmentally friendly, contributing to the sustainability of poultry production.

Challenges and Considerations
While the benefits of phytomolecules in poultry production are well-documented, there are some challenges associated with their use.
These include:

– Variability in Efficacy: The efficacy of phytomolecules can vary depending on factors such as plant source, extraction method, dosage, and the overall diet composition. Standardization of phytogenic products is essential to ensure consistent results.

– Cost: Phytogenic feed additives can be more expensive than traditional antibiotics. However, the long-term benefits, including improved bird health and performance, can offset the higher initial costs.

– Regulatory Approval: Globally in some regions, the use of certain phytomolecules in animal feed may be subject to regulatory approval. Producers should ensure that the phytogenic products they use comply with local regulations.

Conclusion
Gut health is a cornerstone of successful broiler production, influencing not only the health and welfare of the birds but also their growth performance and profitability. As the poultry industry continues to shift toward antibiotic-free production systems, phytomolecules offer a natural and effective solution for maintaining gut health in broilers.
By leveraging the antimicrobial, antioxidant, anti-inflammatory, and microbiota-modulating properties of phytomolecules, poultry producers can improve gut integrity, reduce the incidence of enteric diseases, and enhance the overall performance of their birds. The multiple mechanisms through which phytomolecules support gut health, such as promoting beneficial microbial populations, protecting the intestinal barrier, and mitigating oxidative stress, make them a valuable tool in the pursuit of sustainable poultry production.

The growing body of research supporting the efficacy of phytomolecules in improving broiler gut health underscores their potential as a reliable alternative to antibiotics. Studies have consistently demonstrated that these plant-derived compounds can improve growth performance, reduce mortality, and enhance feed efficiency, all while aligning with consumer demands for natural, antibiotic-free products.

In conclusion, phytomolecules represent a promising, natural solution for enhancing gut health in broilers, offering benefits that extend beyond disease prevention to improving overall flock performance. As the poultry industry moves toward more sustainable and consumer-friendly practices, phytomolecules will likely play an increasingly important role in maintaining the health and productivity of broilers in antibiotic-free production systems.
The future of broiler production lies in sustainable practices that prioritize animal health and welfare without relying on antibiotics. Phytomolecules offer a natural and scientifically backed solution to the challenges of maintaining gut health in broilers, making them a critical component of the next generation of poultry feed additives.

References:
References are available on request.

CINNAMALDEHYDE-Everything the plants have that you want- LEARNING BY DOING SCIENCE…

Deep Chand Vashishtha, – M.Sc, MBA
NSM- Bioncia International Pvt Ltd

Science is a novel practise to allow potential of ingredients or elements. It will be very helpful when it meets your requirements So well said that Learning by Doing Science…Plant bioactive compounds, such as phytochemicals, in poultry diets, are gaining popularity due to their potential antioxidant and anti-microbial activities. Phytogenic feed additives (PFAs) have emerged as natural alternatives to antibiotic growth promotors and have great potential in the poultry industry. In recent years, cinnamon (one of the most widely used spices) has attracted attention from researchers as a natural product with numerous health benefits for poultry. The essential oils in cinnamon, in particular, are of interest because of their antioxidant, anti-microbial, anti-inflammatory, antifungal, and hypocholesterolaemic effects, in addition to their ability to stimulate digestive enzymes in the gut.

Know Values of Poultry Industries
India Poultry Feed Market was valued at USD 3.27 billion in 2024 and is anticipated to project impressive growth in the forecast period with a CAGR of 6.21% through 2030.17 Sept 2024The demand for poultry feed is expected to increase due to the country’s growing poultry production, the expanding retail and food service industry, and advancements in poultry breeding techniques. However, high feed costs may put downward pressure on demand.

CINNAMALDEHYDE
Cinnamon belongs to the genus Cinnamomum (Lauraceae family) which contains more than 250–300 aromatic evergreen shrubs and plant trees However, only a few of these species have significant economic importance worldwide as a common spice including Cinnamomum zeylanicum (C. zeylanicum: True Sri Lankan cinnamon), C. cassia (Chinese cinnamon), C. burmanni (Indonesian cinnamon) and C. loureiori (Vietnamese cinnamon). The annual production of cinnamon is around 0.23 million metric tons, mainly cultivated in Indonesia, Sri Lanka, China, India, Vietnam, and Madagascar.

Phytochemistry Of Cinnamaldehyde
Phytochemicals are plant bioactive non-nutritive compounds that are usually found in small quantities They have different classes according to their structure and include phenolic compounds, phytosterols, phytoestrogens, glucosinolates, saponins, terpenoids, protease inhibitors and organo-sulfur containing compounds. They have significant antioxidant capacity to reduce and protect oxidative stress. Cinnamon consists of various bioactive compounds. Modern analytical techniques have enabled the characterization, identification, purification and quantification of individual compounds and the study of their potent biological activities. Generally, gas chromatography is applied to characterize volatile compounds while liquid chromatography for the identification of phenolic compounds. It is documented that cinnamon consists of natural antioxidant, anti-microbial and anti-inflammatory components such as volatile oils, flavonoids, curcuminoids, coumarins, tannins, alkaloids, xanthones, terpenoids, phenolics and other compounds in significant amounts. The concentration of volatile compounds in cinnamon essential oil (CNO) mainly depends upon the plant parts (leaves, bark, root, stem) from which it is extracted. About forty-one volatile compounds were identified from the bark oil of cinnamon (C. cassia) tree. Cinnamaldehyde (55% to 78%) is the main flavor compound in CNO extracted from bark while eugenol (59–78%) is the main compound in CNO that is extracted from leaves. The volatile oil is approximately 0.6–1% and 1–2% phlobatannins, calcium oxalate, starch, mucilage, and mannitol (sweet) in the bark. Moreover, Kim, et al. further investigated the cinnamon bark oil through GC-MS (gas chromatography– mass spectrometry) and identified seventeen different bioactive compounds. The major bioactive compounds of cinnamon are cinnamaldehyde, cinnamate, cinnamic acid, all of which play vital roles in various biological activities. The different essential oils that have been reported in cinnamon include trans-cinnamaldehyde, eugenol, cinnamyl acetate, L-borneol, L-bornyl acetate, β-caryophyllene, caryophyllene oxide, E-nerolidol, α-thujene, α-cubebene, terpinolene and α-terpine [19]. The LC-MS (liquid chromatography–mass spectrometry) analysis has shown that the concentrations of condensed tannins, proanthocyanidins (PAs) and epicatechin in cinnamon are 26.8%, 23.2% and 3.6%, respectively. Cinnamon has a high polyphenol content and the anthocyanidins (A and B procyanidins) are also present in cinnamon

Poultry Gut Health
Efficient immune system development and proper digestion and absorption of feed, water, and electrolyte balance in the gut leads to the development of strong gut health in poultry. The gut ecosystem plays a vital role in eliminating toxins and infectious agents from the intestinal tract of the poultry. Many factors influence the gut microbial ecosystem, including feed additives (phytobiotics, prebiotics, probiotics, feed enzymes, organic acids etc.), feed composition, genetics, heat stress, feeding practices on the poultry farm, among others. These factors exert a substantial impact on the gut microbiota and poultry health. The association between gut health and poultry performance is widely accepted with optimal health including proper physiological functions of the intestinal tract, morphological integrity, efficient immune response, developed barrier functions, energy balance, tissue metabolism, sustained inflammatory balance and sufficient microbiota to perform desired functions in the gut. The health of poultry is influenced by the structure and functionality of gut microbiota. The progression of acquisition and maturation of the intestinal microbiota throughout the growth period of the poultry has a marked impact on the modulation of physiological functions (nutrient digestion, immunity, intestinal barrier integrity etc.) to maintain gut homeostasis and development of the intestinal epithelium. These functions are essential to optimize energy use and efficiency of extraction by the poultry birds.

Impact of Cinnamon on the Digestibility of Nutrients
Improved utilization of feed improves the feed conversion ratio (FCR), body weight gain (BWG) and overall health performance of broiler chicken. The stabilization of the gut microbiota ecosystem and the stimulation of digestive enzymes secretion are the two well-accepted mechanisms that play a leading role in improving feed utilization and inhibiting the growth-depressing ailments related to metabolism and digestion. The potential impacts of CNO on the secretion of digestive enzymes from the intestinal mucosa and pancreas have been described in many poultry studies. These positive impacts had been confirmed to improve the digestibility of nutrients. Additionally, the bioactive compounds of cinnamon affect lipid metabolism by transporting the fatty acids in the digestive tract of broilers. The CNO has positive effects on the secretion of digestive enzymes and improves the digestibility of nutrients in the gut.

Supplementation of CNO in broilers diet increased the villus height (VH) in the duodenum and jejunum with associated increased villus surface area and the efficiency of absorption and digestion of nutrients. In addition, a greater VH means greater mucosal digestive enzyme activity, which ultimately improves the digestibility of nutrients.
To sum up, the use of cinnamon and its bioactive compounds as feed additives in poultry diets have potent effects on antioxidant status, immunity, nutrients availability and digestibility, enzymes secretion, mucus production, gut microbiota and overall poultry health, growth performance and productivity

Dr. Sundus Gazal1, Dr. Sabahat Gazal2, Dr. Anvesha Bhan3 and Dr. Shalini Pandey4
1,2,3Division of Veterinary Microbiology and Immunology, SKUAST-Jammu
4Department of Veterinary Microbiology, RPS Veterinary College, Mahendragarh

Introduction:
The increasing human population has created an emerging global agrarian crisis due to limited available land resources. As the world’s population continues to burgeon, the demand for efficient and sustainable means of food production has never been more pressing. These growing demands have ultimately signified the role of livestock in catering the nutritional demands of the population. Among the livestock species, poultry sector has emerged to be the fastest growing enterprise over the years with their significant contribution to the total animal protein production as well as consumption. Accompanying this growth, the poultry industry is faced with an enormous challenge to maintain the health and well-being of the birds. Amid the myriad factors that contribute to successful poultry farming, one often-underestimated element stands out: gut health. The gastrointestinal tract of poultry is not merely a conduit for digestion; it holds the key to their overall health, growth, and productivity. In this comprehensive article, we embark on a journey to unveil the intricate web of significance woven around gut health in the world of poultry.

The Gut Microbiota and Its Role:
At the heart of understanding gut health lies the gut microbiota, an intricate symphony of microorganisms residing in the avian gastrointestinal tract. This intricate ecosystem significantly influences various physiological processes, including digestion, nutrient absorption, and immune response. The presence of a diverse and balanced gut microbiota translates into optimized nutrient utilization, bolstered immune defenses, and enhanced resistance against diseases. Gut health relies on the maintenance of the delicate balance between the host, the intestinal microbiota, the intestinal environment, and dietary compounds. This balance can be significantly affected by factors such as management of the birds, feed quality and the environment. When gut health is optimal, there is complete digestion of the feed and absorption of the nutrient components. If there is a disruption to the normal processes in the gut, incomplete digestion and absorption of nutrients can occur, leading to malabsorption and gut imbalance. If there is any imbalance in the gut environment, gut health gets compromised which can adversely affect the health and performance of the birds.

When digestion and absorption is not optimal, there is malabsorption of nutrients resulting in more nutrients being available to the small intestinal bacteria that can lead to an overgrowth of the bacterial population. A further consequence of malabsorption is the passing of proteins, sugars and fat into the ceca causing an overgrowth in the microbial population and a shift away from the beneficial fermentative bacteria.

Digestive Efficiency and Nutrient Absorption:
The gut microbiota operates as a remarkable partner in digestion. Its orchestrated efforts break down intricate feed components—such as complex carbohydrates and proteins—releasing essential nutrients that are subsequently absorbed by the avian body. A harmonious gut microbiota, with its array of beneficial bacteria, enhances the efficiency of digestion, ensuring that vital nutrients from the feed are harnessed to their fullest potential. Vitamins such as vitamin K, and water-soluble vitamin B such as biotin, cobalamin, folates, nicotinic acid, pantothenic acid, pyridoxine, riboflavin and thiamine are synthesized by microbial communities in the gut. A healthy gut optimizes digestibility, reduces nutrient excretion and mitigates ammonia and other gas emissions within the poultry housing environment which may pose an environmental and health risk. Conversely, a disrupted or imbalanced gut microbiota may disrupt digestion, dampen nutrient absorption, and ultimately culminate in diminished growth rate.

Immune System Support:
The gut and the immune system are inextricably linked, their alliance forming a formidable defense against external threats. A thriving gut microbiota nurtures the development and maintenance of a resilient immune system. The microbiota found in the poultry gut promotes the beneficial development of the intestinal mucus layer and epithelial monolayer, the exclusion of pathogenic microorganisms, polysaccharide degradation, and energy provision in the form of amino acids and short chain fatty acids. This facet assumes paramount importance in poultry farming, where disease outbreaks can wreak havoc on flock health and productivity. The intestinal microbiota is involved in modulating host immune system, influences the normal structural and functional organ development, and host metabolism. This microbiota stimulates the production of immune-regulating substances, thereby fortifying the avian body’s capacity to fend off pathogens. The gut-associated lymphoid tissue (GALT), a considerable portion of which resides within the gastrointestinal tract, houses immune cells integral to safeguarding poultry health. Mucosal immune responses to resident intestinal microbiota can distinguish commensal from pathogenic bacteria. The gut microbiota is also involved in the modulation of B-cell response and immunoglobulin A (IgA) production. IgA plays an important role in regulating the composition of the gut microbiota by specifically binding to the bacterial epitopes.

Disease Prevention:
The gut microbiota operates as a natural bulwark against pathogenic invaders. The harmonious interplay between beneficial bacteria and potential pathogens unfolds a tale of competition—where beneficial microbes vie for resources and space, curbing the colonization of harmful organisms. The bacterial community of the intestinal microbiota form a protective barrier which lines the gut, preventing the growth of less favourable or pathogenic bacteria such as Salmonella, Campylobacter and Clostridium perfringens. This principle is known as competitive exclusion. Theories suggest that the commensal (or friendly) microbiota dominate attachment sites on the gut cells reducing the opportunity for attachment and colonization by pathogens. Another proposed mechanism is that the intestinal microbiota can secrete compounds, including volatile fatty acids, organic acids and natural antimicrobial compounds (known as bacteriocins), that either inhibit the growth of, or make the environment unsuitable for, less favourable bacteria. Sustaining a healthy gut microbiota through diligent management practices can markedly reduce the reliance on antibiotics and other therapeutic agents, charting a more sustainable trajectory for the poultry industry.

Stress Management:
Stress occurs as a result of a biological response to an internal or external stimulus that poses threats to the normal physiological equilibrium of an organism. Commercial poultry production is faced with a variety of stresses, including environmental, nutritional, and internal stress which decrease production and reproductive performance and affect the health status of poultry birds. Poultry suffer from various environmental stressors such as heat stress, cold stress, feed restriction, stocking density, pollutants, and many more. Stress can exert a deleterious impact on gut health by disrupting the equilibrium of the gut microbiota and undermining the integrity of the intestinal barrier.
The consequences manifest as impaired nutrient absorption, heightened vulnerability to infections, and compromised overall performance. A resilient and diverse gut microbiota equips birds to better navigate these stressors, bolstering their holistic well-being.

Strategies for Maintaining Gut Health:
The maintenance of optimal gut health necessitates a holistic approach, a symphony of nutritional balance, judicious management practices, and rigorous biosecurity protocols. Some pivotal strategies include:

Balanced Nutrition: Furnishing a meticulously balanced diet that fulfills the birds’ nutritional requisites is the bedrock of gut health. Well-crafted diets provide the substrate for the flourishing of beneficial gut bacteria, and the nutrients essential for overall health. Dietary fibre has been found to have an enormous impact on the gastrointestinal tract development, digestive physiology, including nutrient digestion, fermentation, and absorption processes of poultry. It has been suggested that moderate level of insoluble fiber may increase chyme retention time in the upper part of the GIT, stimulating gizzard development and endogenous enzyme production, improving the digestibility of starch, lipids, and other dietary components. Organic acids are compounds with acidic properties that occur naturally and include carbon. The inclusion of organic acids in poultry diets can improve gut health, increase endogenous digestive enzyme secretion and activity, and improve nutrient digestibility. These organic acids can help not only decontaminate feed but also have the potential to reduce enteric pathogens in poultry. The acids can cross the bacterial cell wall and disrupt the normal actions of certain types of bacteria, including Salmonella spp, E. coli, Clostridia spp, Listeria spp. and some coliforms.

Probiotics and Prebiotics: The introduction of probiotics—live beneficial bacteria—into feed or water, and prebiotics—non-digestible compounds—into diets can invigorate the gut microbiota. These interventions cultivate an environment conducive to optimal gut health. Probiotic supplementation brings about various effects like: modification of the intestinal microbiota, stimulation of the immune system, reduction in inflammatory reactions, prevention of pathogen colonization, enhancement of growth performance, alteration of the ileal digestibility and total tract apparent digestibility coefficient and decrease in ammonia and urea excretion. Prebiotics like mannan-oligosaccharides (MOS), inulin and its hydrolysate (fructooligosaccharides: FOS), as well as other prebiotics are important contributors to the modulation of the intestinal microflora and stimulating a potential immune response, as well as stimulating the development of beneficial microorganisms. Prebiotics can also help reduce pathogen colonization in the GIT.

Hygiene and Biosecurity: Adhering to stringent biosecurity measures thwarts the ingress of pathogens, curbing the potential for gut health disruptions arising from disease outbreaks. Biosecurity is the efficient use of common hygiene procedures that make a remarkable difference between success and failure in a poultry operation. Biosecurity includes Structural biosecurity which encompasses all aspects related to facilities and equipment and Operational biosecurity which includes operations routinely performed on a farm on a regular basis, such as personnel entry, vehicle entry and disinfection, pest control, waste disposal, etc. In addition, only authorized people should be allowed to enter the farms, since they are the most common animate factor involved in disease transmission: this includes farm employees, veterinarians, truck drivers, intervention teams (vaccination, beak treatment, loading and unloading of birds), external workers in charge of repairs and maintenance, etc. Effective implementation of cleaning and disinfection procedures are essential to reduce the risk of health challenge.
Water Quality: Water is the most important nutrient for poultry and plays a key role in thermoregulation, digestion and absorption of nutrients. The provision of uncontaminated and clean water is pivotal for sustaining gut health. Water quality directly impacts digestion and gut microbiota composition. Excellent water quality is important as chickens consume twice as much water as feed. The microbial, chemical and physical quality of water should be monitored regularly.

Reducing Stressors: By mitigating stressors through effective management practices, proper ventilation, and prudent stocking densities, poultry farmers can proactively safeguard gut health. The most common signs of stress in poultry include aggression and fighting, loss of weight, feather shedding, decreased egg production, lethargy and sluggish attitude and loss of appetite.

Stress can be reduced in poultry by providing adequate space, management of heat stress by providing proper ventilation, adjusting feeding schedules, and flushing and cooling waterers. Electrolytes and vitamins can also be added to drinking water to help birds cope with heat stress. Enrichment can reduce stress by providing birds with the outlets for expressing their natural behaviors such as adding straw bales for pecking and scratching, providing opportunities for dust bathing through sand or other substrates, and adding perches or platforms for chickens to roost on.

Conclusion:
The panorama of gut health in poultry farming surpasses the periphery of digestion—it intricately weaves through growth, immune defense, disease resilience, and the holistic well-being of the avian inhabitants. A thriving gut microbiota unfurls a tapestry where nutrient utilization is optimized, immune systems fortified, and the industry’s sustainability bolstered. By embracing the profound implications of gut health and implementing apt strategies, poultry farmers can orchestrate a crescendo of production practices, elevating flock performance, and contributing to the production of nourishing, safe, and sustainable poultry products to satiate the appetites of a burgeoning global populace.