You can divide a large pasture into several paddocks with electric fencing. Adjust paddock size so that it takes cattle three to seven days to graze it down. After you rotate animals, clip the paddock to remove rejected forage before it becomes mature. Regardless of whether you plant 100 acres or five acres, the high-nutrient content of these forages can provide excellent performance from any group of livestock. But flies that join the picnic become most annoying.
Flies annoy horses, too.
This buddy action allows the tail of each to swish away the flies from the other's head. When horses are stabled in summer, they can't aid each other in ridding themselves of pesky flies around their heads. Face flies' feeding habits cause the horses eyes to tear. Their feeding can damage the eye tissues and may expose horses to pathogens and parasites such as Habronema and Onchocerca. University of Pennsylvania researchers found that sodium bisulfate was helpful in reducing the number of flies and the ammonia odor in horse stalls.