Explore our archive of leader insights and featured stories to learn how Merck Animal Health protects and advances the health of animals worldwide.

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‘Hidden’ Parasitic Infections in Dairy Cattle Cost the Industry Billions Every Year

Recent research suggests that the global impact of parasites is far greater than many realize, costing the industry billions of dollars each year, with most losses driven by reduced performance.

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Addressing America’s Rural Veterinarian Shortage Helps Support and Protect Our Food Supply

Food animal veterinarians are the unsung heroes of American agriculture. They do more than deliver calves or conduct routine check-ups. They inspect livestock, administer vaccines, and provide critical guidance on herd health. They support not just animal welfare but the viability of family farms, local economies, and the safety of the food on our tables.

Saving the Herds of Lapland: How an Antiparasitic Drug Helped Preserve Reindeer, Livelihoods, and Culture

In the early 1970s, reindeer herds across Lapland were in crisis. Parasitic infections were decimating calves, with losses in some herds reaching as high as sixty percent.

Protecting Tilapia Production: Field Evidence that Vaccination Saves Fish and Stabilizes Yields

Streptococcosis and a viral disease known as infectious spleen and kidney necrosis (ISKNV) are two of the most consequential infectious threats to tilapia farmers worldwide.

Youngstock: Why the Young Matter Most on Every Cattle Farm

Healthy calves and weanlings grow into productive cows and bulls that determine a herd’s longevity, fertility and financial return.

Immunity-led protection in calves: building health from day one

Calves arrive in the world with huge potential and fragile defenses. Immunity-led protection is a practical, evidence-informed approach that combines colostrum management, nutrition, vaccination and hygiene to support calf immunity while reducing pathogen exposure. The goal is simple: reduce disease, improve growth and productivity, and lower labor and treatment costs. Here is a clear, farm-focused guide to what immunity-led protection means in practice and how to put it into action.

The Advantages of Behavior Monitoring Technology in Dairy Cow Performance and Well-Being

Advancements in dairy technology are transforming how farmers manage their herds, providing valuable insights into cow behavior, health, and productivity. Behavior monitoring tools, such as wearable devices and sensors, have emerged as essential for both confined production systems and outdoor grazing setups. These technologies offer a 24/7 window into cows’ lives, improving performance and well-being while addressing the unique challenges of each farming system.

Enhancing Multivalent Inactivated Vaccines for Long-Living Birds

Poultry is a cornerstone of global food security. It provides affordable, high-quality protein in the form of both meat and eggs, feeding billions of people worldwide.

When Is Itching an Issue? Identifying and Treating Abnormal Itch in Dogs

Itching, or scratching, is common behavior in dogs and is not always a cause for concern. Like humans, dogs may experience occasional itches that prompt scratching.

When “Just One Bite” Isn’t Just a Nuisance — Rethinking Flea and Tick Care for Pets and People

Fleas and ticks present ongoing risks to both animal and human health.

Canine Otitis Externa in Dogs: Prevalence, Symptoms, and Care

Canine Otitis Externa, commonly referred to as ear inflammation, is a prevalent condition affecting dogs of all breeds and ages. Research indicates that up to 1 in 7 dogs seen in veterinary practice will get otitis externa at some point in their lives.

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