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Poultry

While calcium is essential for bone strength, muscle function and enzyme activity, what truly matters in poultry diets is its bioavailability.

Even the smallest changes in poultry nutrition can lead to major financial gains, particularly when it comes to improving feed efficiency

In large-scale broiler production, a one-point drop in feed conversion ratio can cost upwards of $20 million annually. Recent research from the University of Arkansas is helping poultry producers get more precise with calcium, a key nutrient that significantly influences feed-to-weight gain efficiency.

While calcium is essential for bone strength, muscle function and enzyme activity, what truly matters in poultry diets is its bioavailability — how much of the calcium the bird can actually absorb and use. Traditional feed formulations focus on total calcium content without fully accounting for how accessible that calcium is from different sources.

Ben Parsons, assistant professor of poultry nutrition at the Arkansas Agricultural Experiment Station, explains the core issue: "The biggest challenge we have is analytically picking up the calcium content of our samples accurately." The variability comes from feed ingredients like limestone and dicalcium phosphate, which are mined minerals that vary in particle size and composition.

Parsons, along with Ph.D. student Rebekah Drysdale, conducted a comparative study of two methods to measure calcium bioavailability. The classic bone ash method — used for decades — assesses mineral content in the bird’s leg bone. A newer, faster method called the "apparent ileal digestibility test" analyses how much calcium is absorbed in the final section of the small intestine.

Drysdale developed the updated bone ash method during her master’s research. Parsons said, "The bone ash method is a classic approach that has been around for decades, mainly for trace minerals and phosphorus but very recently we've developed a regression approach for bone ash to measure calcium." The researchers found both methods to be reliable, but the ileal digestibility test offers results within 24 to 72 hours, compared to the two weeks required for the bone ash method.

Limestone remains the most common calcium source in poultry feed due to its low cost and availability. However, its digestibility can vary widely, from 20% to 80%, depending on particle size and solubility. Over-supplying calcium to compensate can negatively affect the absorption of other nutrients like phosphorus and even worsen disease susceptibility. "Some recent work is showing that excess calcium can exacerbate disease and pathogen challenges," Parsons said.

Parsons hopes future poultry diets will be based on digestible, not total, calcium levels. "You want a limestone that's in the middle of this solubility distribution," he said, pointing out that too rapid or too slow solubility both cause issues. By using both testing methods, producers can better identify high-performing calcium sources and reduce waste while maximising bird health and growth.

The poultry sector is undergoing a profound transformation.

The global poultry keeping machinery market is forecast to grow steadily, with projections indicating a rise from US$5.6bn in 2025 to US& 8.1bn by 2035.

This expansion, supported by a 3.8% CAGR, is being driven by rising demand for poultry products worldwide, growing adoption of automation, and a strong focus on sustainable and efficient farm management.

The poultry sector is evolving fast, with technology playing a pivotal role in modernising how farms operate. Automation is becoming the standard across poultry operations, making labour-intensive tasks like feeding, watering, egg collection, and waste disposal more streamlined. Integration of IoT and AI tools is allowing farmers to monitor bird health, feed levels, and environmental conditions in real time.

According to a leading industry analyst, “The poultry sector is undergoing a profound transformation, moving rapidly towards sophisticated automation to enhance efficiency, ensure biosecurity, and meet the soaring global demand for protein. This growth is not just about quantity; it’s about quality, sustainability, and intelligent farm management.”

This market growth is further supported by increasing poultry consumption, particularly in urban areas where protein-rich diets are in higher demand. Governments are also backing the shift towards more secure and modern farming practices, offering support for the adoption of biosecure housing and automated disinfection systems.

Sustainability is another key area shaping the market. With climate pressures and environmental regulations on the rise, poultry farms are turning to energy-efficient technologies such as solar-powered systems, intelligent ventilation, and waste-to-energy innovations to reduce their environmental footprint.

Feeding and climate control technologies are emerging as the most significant segments within the poultry machinery market. Automated feeding systems help deliver balanced nutrition while cutting down on manual labour and feed waste. With fluctuating feed prices, these systems are crucial for improving feed conversion ratios and optimising bird growth. Climate control systems, meanwhile, ensure healthy farm conditions by regulating temperature, humidity, and airflow, helping to prevent heat stress and disease outbreaks.

The largest demand continues to come from poultry farms and processing factories. Modern farms are investing in smarter, tech-driven solutions to improve productivity and animal welfare, while large factories are implementing fully automated lines to handle growing demand for processed poultry products.

Regional trends show the Asia-Pacific market leading growth, with countries like China, India, and those in Southeast Asia heavily investing in farm upgrades. North America maintains a strong market share due to industrial-scale production and smart farm adoption, while Europe’s growth is being driven by strict animal welfare laws and sustainable farming initiatives.

While high initial investment costs and biosecurity threats remain challenges, the opportunities far outweigh the risks. Smart automation, renewable energy integration, and AI-powered analytics are reshaping the future of poultry farming, ensuring it becomes more productive, secure, and environmentally responsible.

Microsaf is an innovative probiotic combining three Bacillus strains enhanced with GO Technology.

Phileo by Lesaffre has announced that the European Food Safety Authority (EFSA) has published a positive scientific opinion on its probiotic product, Microsaf, confirming its efficacy and safety for poultry production

Microsaf is an innovative probiotic combining three Bacillus strains enhanced with GO Technology, which improves spore germination and efficiency. Designed to support digestive health and performance in broiler chickens, the product has now gained EFSA's backing as a zootechnical feed additive in the categories of 'gut flora stabilisers' and 'other zootechnical additives'.

Elen Rondel, Western Europe poultry manager at Phileo by Lesaffre, said, "We are thrilled to receive this positive EFSA opinion, which validates the efficacy and safety of Microsaf. Microsaf is a testament to our commitment to providing reliable, science-backed solutions that support animal health, performance and welfare."

She added, "Microsaf is the trademark for Phileo's innovative probiotic that combines three unique Bacillus strains in one product to address some of the key challenges faced by poultry producers today. Together, these novel strains have been proven to effectively support digestive performance in broilers, while simultaneously improving production profitability."

Microsaf has already been adopted globally, with producers reporting consistent improvements in feed conversion, gut health, and weight gain. "Over the past years, we have witnessed very positive adoption of Microsaf by customers globally. The feedback from producers has been exceptional, confirming the product's efficacy in real-world commercial settings," Rondel said. "We are excited to bring this proven solution to European poultry producers soon."

Pending final EU authorisation, Phileo is preparing for a European launch. "Microsaf represents our ongoing commitment to developing innovative solutions that help address the increasing complexity of food production while supporting animal health and welfare," Rondel concluded.

Results from the study showed that SNPs found in the HNMT gene significantly increased carnosine levels in chickens. (Image source: Adobe Stock)

Poultry meat is one of the most sought-after foods worldwide, valued not only for the nutrition it provides, but also for its palatability

Besides being popular for its protein, vitamin and mineral content, poultry meat also contains bioactive compounds, particularly carnosine and anserine that determine its palatability. Both these compounds contribute to the umami taste, known to be a key component of meat flavour, with their quantities primarily being influenced by genetics. Moreover, their levels tend to vary among breeds and are often used to determine meat quality.

Besides breed, the carnosine levels in meat tend to depend on a variety of other factors including muscle fibre type and whether the meat is raw or cooked. Meat from the breast and thigh muscles are usually found packed with carnosine, with concentrations being greater in Korean native chickens and Thai indigenous and hybrid native chickens.
On the other hand, anserine is generally found in the skeletal muscles of chickens, cattle and certain species of fish. Its levels are often higher in breast meat compared to thigh meat, given its function in buffering proton production in breast muscle. Moreover, similar to carnosine, the levels of this compound in meat can be determined by the type of meat and chicken line.

A recent study conducted at Chungnam National University aimed to explore the genetic and environmental factors that affect carnosine and anserine content in meat in Korean native chicken red brown line (KNC-R). Single nucleotide polymorphisms (SNPs) were identified in the histamine-N-methyl transferase (HNMT) and histamine-N-methyl transferase-like (HNMT-like) genes and their association with the carnosine and anserine content was studied.

Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) methods were used to genotype one synonymous SNP (rs29009298C/T) of the HNMT gene. On the other hand, PCR allele competitive extension (PACE) genotyping technology was used to genotype four missense SNPs (rs734406537G/A; rs736514667A/G; rs15881680G/A and rs316765035T/C) of the HNMT gene, and one missense SNP rs737657949A/C of the HNMT-like gene.

Results from the study showed that SNPs found in the HNMT gene significantly increased carnosine levels in chickens. Moreover, breeding methods were also found to influence carnosine content to a great extent, with female chickens showing comparatively higher levels than males.

Two associations could be identified between the genotypes of the synonymous SNP: rs29009298C/T, missense SNP rs736514667A/G of the HNMT gene and the content of carnosine. Given its efficiency and precision, PACE technology was therefore regarded as a useful and reliable tool that could be used for the improvement of livestock systems.

Two species namely Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) are pathogenic for chicken. (Image source: Adobe Stock)

Respiratory diseases in chickens are generally caused by a variety of bacteria belonging to the genus ‘Mycoplasma,’ that possess certain distinctive features that set them apart from typical bacteria

While a total of 20 Mycoplasma species have been isolated from avian hosts, according to the MSD Veterinary Manual, only four species are considered pathogenic in poultry. Out of these two particular species namely, Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) are pathogenic for chicken.

In broiler chickens, MG is a primary cause of chronic respiratory disease that can have detrimental impacts on both egg production and meat processing. The most notable impact includes a sharp drop in the number of eggs laid per hen over the production cycle. In case of large commercial operations, MG can cause increased condemnation in the processing plant. This means that a large number of carcasses may need to be discarded after being deemed unsafe for human consumption. Common symptoms of MG include coughing, sneezing and breathing difficulties, as well as the presence of nasal discharge and conjuctivitis with frothiness around the eyes. Severity may vary from mild to severe, with some cases occurring alongside E coli infections.

MS on the other hand, is transmitted through the egg and often causes subclinical infection of the upper respiratory tract. Infection rate is reported to be low, with some progeny even being free of infection. The infection affects layer flocks of various age groups, resulting in a decrease in egg production and significant abnormalities in egg shells. First signs of MS, also known as infectious synovitis include discolouration of head parts and difficulties in walking, mainly due to the occurrence of inflammation in their hocks and footpads. Morbidity of the disease is considered moderate, with the overall mortality rate ranging from 1-10%.

Controlling both MG and MS involves administering antibiotics. Treatment options for MG involves using tylosin or tetracyclines to reduce egg transmission. For MS, a live, temperature-sensitive vaccine (MS-H) is available in many countries.

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