Cows Fighting Back Against Flies
The image of the docile cow getting covered in flies while she chews the grass or the cud very slowly and calmly is one that most people have of the cow.
However, the reality can be a lot different and researchers at Florida State University have been finding that the aggressive streak in cows is more and more common. Why that should be is another matter entirely and one which these researchers arenât too interested in answering just yet.
âWe conducted studies on herds of dairy cows on 50 ranches across Florida over a ten-year period,â says Sismic Culluck of the bovine division of the Animal Behavioral Studies Department at the Tampa college. âIt was a very comprehensive and lengthy study and we were quite surprised at the results.â
Taking samples of what he terms âanger hormonesâ in the cows, Culluck and his team found that during the ten-year period covered, cows of all ages experienced a 38% rise in the prevalence of this aggressive strain in their blood.
One of the more interesting corollaries from this test showed that they were having less medical complications from flies at the same time.
The researchers insist that they cannot be certain that the two sets of findings are even related. The presence of the hormone could be, they say, attributed to a change in feeding patterns or in the ingredients of formula feed. It does correspond with a period during which farmers had become more and more dependent on formulated feed for their animals rather than using more natural foods.
Or it could be that the formula feed has something in it that acts as a fly repellent through the skin and that that is causing the reduction in fly problems for the increasingly cranky animals.
What many farmers believe, however, is that more and more cows are simply evolving with the increase in flies around the farms and are fighting back.
âItâs certainly both an interesting and a plausible theory,â says Dr. Culluck. âNature has a way of fighting back in a whole host of domains and manners that really leave you wondering if we arenât all just puppets whose strings are being controlled by something else.â
Thatâs certainly food for thought, all right â especially if you believe in a greater being. At the same time, it has to be said that Florida has embraced the whole concept of fly control through organic means. Sales of packs of fly predators have increase exponentially in the Sunshine State over the past five years as farmers push forward with all kinds of green solutions to get rid of flies. The focus on getting rid of flies and the banning of a lengthening list of chemicals means that green flies are now down while the sales of homemade fly trap kits are up.













