Precision-engineered continuous gun syringes designed for fast, reliable, and hygienic livestock vaccination in modern farm operations.
A gun syringe โ also known as a continuous syringe or repeating injector โ is a specialized veterinary instrument designed for the rapid, repetitive, and accurate administration of vaccines, antibiotics, vitamins, and other injectable medicaments to livestock animals such as cattle, pigs, sheep, poultry, and horses.
Unlike conventional single-dose syringes, a gun syringe features an automatic refill mechanism that draws fluid from an attached vial or reservoir after each injection. This allows farm operators and veterinarians to vaccinate dozens or even hundreds of animals without stopping to manually reload, dramatically improving workflow efficiency and reducing labor costs.
Modern livestock gun syringes are manufactured from medical-grade stainless steel, high-strength polycarbonate (PC), or a combination of both, offering corrosion resistance, easy sterilization, and long service life โ all critical requirements in demanding farm environments.
Automatic refill mechanisms enable 100โ500 injections per session without reloading, cutting vaccination time by up to 70% compared to traditional single-dose syringes.
Fixed-dose and adjustable-dose models ensure each animal receives an exact, consistent volume of vaccine โ critical for herd health outcomes and regulatory compliance.
Autoclavable stainless steel and medical-grade plastic components prevent cross-contamination, protecting both animal health and operator safety during mass vaccination campaigns.
The global veterinary syringe and needle market is expanding rapidly, driven by rising livestock populations, stricter biosecurity regulations, and increased awareness of animal health management.
The livestock vaccination equipment sector is undergoing significant transformation, shaped by global food security demands, technological innovation, and regulatory evolution.
The global shift toward large-scale intensive livestock operations โ mega-farms housing tens of thousands of animals โ has created explosive demand for high-throughput vaccination tools. A single swine farm may require 50,000+ individual injections per vaccination cycle, making continuous gun syringes an operational necessity rather than a convenience.
Southeast Asia, Sub-Saharan Africa, Latin America, and the Middle East are experiencing rapid growth in livestock populations and corresponding demand for professional vaccination equipment. Governments in these regions are actively subsidizing veterinary programs, creating significant B2B opportunities for manufacturers like WANJIA with global distribution networks.
Regulatory and consumer pressure is accelerating the shift from single-use disposable syringes to durable, autoclavable, reusable gun syringes. Reusable instruments reduce plastic waste by over 90% per vaccination cycle, aligning with ESG goals and reducing long-term procurement costs for farm operators.
Next-generation vaccination management systems are beginning to integrate digital dose counters, RFID animal identification, and cloud-based herd health records. While standalone gun syringes remain dominant, smart injection devices capable of logging individual animal vaccination data represent an important emerging segment.
International standards including ISO 11135 (sterilization of medical devices) and increasing country-specific veterinary equipment certifications are raising the bar for product quality. Manufacturers holding CE, FDA compliance, and extensive patent portfolios gain significant competitive advantages in regulated export markets.
Advanced materials such as PEEK-reinforced components, chemical-resistant Viton seals, and anti-drip needle designs are improving the performance and longevity of gun syringes. Double-barrel and fixed-dose models are gaining traction for their ability to deliver precise multi-dose protocols in a single pass.
Gun syringes for livestock vaccination serve a remarkably diverse range of animal agriculture settings, each with distinct performance requirements.
Pig farms are among the highest-volume users of continuous gun syringes. Mass vaccination programs for diseases including Porcine Circovirus (PCV2), Foot-and-Mouth Disease (FMD), Classical Swine Fever (CSF), and Porcine Reproductive & Respiratory Syndrome (PRRS) require fast, precise instruments. Fixed-dose gun syringes like the WJ123-1 allow swine technicians to vaccinate 200โ400 pigs per hour with consistent dosing accuracy.
Large beef and dairy cattle operations use gun syringes extensively for Bovine Respiratory Disease (BRD) prevention, Brucellosis control, Blackleg immunization, and reproductive hormone injections. The robust stainless steel components of premium gun syringes withstand the demanding handling conditions of cattle chutes and crowding pens, where equipment durability is paramount.
Broiler and layer poultry operations โ particularly in countries with dense commercial poultry industries โ deploy gun syringes for subcutaneous and intramuscular vaccine delivery for Newcastle Disease, Avian Influenza, Marek's Disease, and Infectious Bursal Disease. The speed and repeatability of continuous syringes are essential when processing thousands of birds per day.
Small ruminant producers in Australia, New Zealand, Europe, and the Middle East rely on gun syringes for clostridial disease vaccines, anthelmintic drench administration, and reproductive management injections. Lightweight designs with adjustable dose settings are particularly valued in pastoral settings where operators work independently across large grazing areas.
An emerging application for continuous gun syringes is in commercial fish farming, where individual intraperitoneal vaccine injections are required for salmon, trout, and sea bass. Specialized fine-needle attachments and precise micro-dose settings extend the utility of veterinary gun syringes into the rapidly growing aquaculture sector.
Beyond large farms, veterinary clinics, mobile vaccination units, and government animal health programs in developing countries use portable gun syringes as their primary vaccination tool. Compact, easy-to-sterilize designs with large-capacity reservoirs enable rural veterinarians to serve remote communities efficiently during disease outbreak responses.
To shape the future of animal health and livestock productivity, Shaoxing WANJIA aspires to lead the global livestock and animal healthcare industry. Through cutting-edge technology and high-quality equipment, we envision a world where sustainable livestock practices drive a healthier and more productive future.
๐To be a reliable supplier to our clients, supply high quality products that help improve animal health and well-being with sustainable practices. Every gun syringe we manufacture represents our commitment to animal welfare, farm productivity, and the global veterinary professionals who trust our equipment daily.
๐กShaoxing WANJIA has been a leading manufacturer in the veterinary equipment industry since 1985. Over the decades, we have transformed from humble beginnings into a globally renowned company, setting industry standards in research and production of gun syringes and comprehensive livestock vaccination equipment.
Our fully automated production facilities, combined with exceptional manufacturing capabilities and stringent quality control, ensure that every product meets the highest international standards. With over 60 patent certifications and exports to more than 60 countries and regions, Shaoxing WANJIA delivers innovative solutions that drive the livestock industry forward.
As a trusted supplier in global trade, Shaoxing WANJIA's story is one of relentless pursuit of excellence, empowering the livestock industry and shaping the future of veterinary equipment worldwide.
Precision-engineered equipment crafted with the latest technology and strict quality controls, guaranteeing exceptional performance and reliability.
We deliver products 30% faster than the industry average, ensuring timely solutions for your business needs.
Our professional and responsive team ensures a seamless experience, from product selection to after-sales service.
Backed by a strong R&D team, we continuously launch new, high-quality products that adapt to the evolving needs of the livestock industry.





"Since 1985, WANJIA has been a leader in the global veterinary instrument industry. With advanced production facilities and stringent quality control, we ensure that every product meets the highest international standards."
WANJIA consistently meets customer demands for high-performance gun syringes and livestock vaccination equipment through innovation and excellence, driving the development of the livestock industry and shaping the future of veterinary equipment worldwide.









With high quality products and excellent service, the company has won many awards and certifications in the industry. These honors prove the strength and influence of the company, and show the outstanding performance of the company in innovation and development, social responsibility, etc., which has won high recognition from peers and customers. Full certification ensures our gun syringe products are suitable and reliable for global livestock vaccination applications.













Shaoxing WANJIA has maintained an active global exhibition presence for over a decade, participating in leading livestock and veterinary equipment trade shows across Asia, Europe, the Americas, and the Middle East.























Explore our full range of professional veterinary syringes, continuous gun syringes, drenching guns, and livestock vaccination accessories โ engineered for performance, durability, and biosecurity.