Flies Economic Impact**
$2.2+ Billion Loss in the US
1 Billion Loss Horn Flies
230 Million Loss Face Flies
750 Million Loss House Flies
250 Million Loss Stable Flies
The economic loss to the North America cattle industry from horn fly infestation is over $1 billion per year.
But why is it important to treat horn flies?
500 flies per animal
loss of >80lbs./year
And also because they can quickly get out of control
Cost associated with pinkeye, which is spread by face flies to healthy cattle, is estimated at over $230 million in the U.S.
Face Flies "The Neglected Fly"
Decrease in milk
Up to 65lb.
The house fly can transmit 65 disease organisms to animals and humans. The economic loss in cattle due to transmission of these bacteria, like one which causes mastitis, is over $750 million in the U.S.
House Flies can Transmit
Studies have shown that just 5 flies per animal will reduce feed efficiency and result in an average loss of $8.51 per animal per season. Total estimated annual loss to U.S. cattle industry is greater than $250 million.
But why is it important to treat stable flies?
20-60% in milk
Stable Flies also can drain a lot from a dairy
"Stable Flies" irritate cattle during resting, feeding and milking. Research shows that high populations of stable flies can lower milk production by 15 to 30 percent. (Stevenson and Cocke)
As few as 4 stable flies per cow can reduce production by 3% per month.
(Tesas A&M Extension, "Integrated Pest Management of Flies in Texas Diaries")
Stable Flies Decrease Milk Production
Stable Flies were shown to decrease milk production by 3.3 lb/day (Freeborn)
0.65 to 0.70 percent loss in milk and butterfat production per fly per cow. Controlling stable flies increased milk production by 10-20 percent. (Bruce and Decker)
Dr. Steve Jones (Northwest Research and Nutrition) 4 lbs per day reduction Milk Production OVERNIGHT