Constant harassment from flies is more than a nuisance for cattle; it is a serious production challenge that erodes profitability across the herd. Face flies, horn flies, and stable flies cluster on faces, legs, and flanks, causing painful irritation that leads to frantic tail switching and restless bunching. This behavior disrupts the crucial grazing period, reducing time spent feeding and ruminating, which directly lowers average daily gain and milk output. For a producer, the economic impact manifests in slower finishing times, decreased calf weaning weights, and a higher risk of conditions like pink eye that require veterinary intervention. Implementing an effective feed through fly control for cattle addresses the root of the problem by disrupting the fly lifecycle at its source, right where the animals eat.
How Feed Through Fly Control Works in the Digestive System
The mechanism behind feed through fly control for cattle is both elegant and efficient, relying on a precise delivery of active ingredients. When incorporated into the daily ration, either through a mineral mix or a complete feed, the insect growth regulator (IGR) passes through the animal’s digestive system intact. Because it is formulated to be heat-stable, it survives the rumen environment and is excreted in the manure unchanged. Once in the manure pat, the IGR acts as a sterilizing agent, preventing the development of fly larvae that hatch from eggs laid in the waste. By breaking the reproductive cycle, the number of adult flies emerging in the environment is significantly reduced, protecting the herd without the need for constant on-animal applications.
Targeting the Fly Life Cycle at the Source
Understanding the fly life cycle is essential to appreciating why feed through control is so effective. Female flies require decaying organic matter, specifically moist manure, to lay their eggs successfully. A single untreated cow can produce millions of potential fly larvae in a single season, providing a massive breeding ground for the next generation. Traditional spray and rub methods only kill adult flies on contact, offering a temporary reprieve while the next generation emerges. Feed through products interrupt this cycle at the most vulnerable stage—the larval development—dramatically cutting the future population before it can even take flight. This source suppression is the key to long-term herd protection.
Advantages Over On-Animal Fly Control Methods
While fly tags and sprays have their place, feed through fly control for cattle offers distinct operational and welfare advantages. Application is passive and continuous, requiring no handling stress for the animals or time investment from the labor crew. This is particularly beneficial in large pastures or rotational grazing systems where catching cattle is difficult. Furthermore, eliminating the need for frequent pour-ons or sprays reduces the risk of chemical residue concerns on hides and carcasses, which is critical for market compliance. The reduced stress from fewer flies and less handling also translates to calmer cattle, which can exhibit improved temperament during routine management practices.
Me tangible Economic Returns for Producers
The return on investment for a comprehensive feed through program is measurable and substantial, extending beyond simple insecticide costs. Studies consistently show that herds utilizing IGRs experience increased average daily weight gain, often in the range of 0.1 to 0.3 pounds per day per animal. This boost is driven by reduced energy expenditure on stress responses and less competition for feed at the bunk. Milk yields in dairy operations see a similar bump, as calves are not distressed by fly pressure and cows remain more comfortable. When you factor in the savings on veterinary treatments for flystrike and pink eye, the financial case for integrating feed through fly control into the ration is exceptionally strong.
Best Practices for Implementation and Mixing
More perspective on Feed through fly control for cattle can make the topic easier to follow by connecting earlier points with a few simple takeaways.
