CALF_News_June_July_2020

19 CALF News • June | July 2020 • www.calfnews.net been eradicated from many countries, beginning with Denmark in the 1960s. Fly worry Several fly species are responsible for the transmission of better-known, common problems in cattle. Fly strike, or secondary myiasis, happens when eggs are deposited in wounds and larvae develop, feeding on necrotic tissue and wound secretions. Results can be lethal if not treated. Fly worry is a term used to describe the 12 to 14 percent decrease in produc- tion due to simple irritation of painful, annoying bites, piercing or sucking. Horn flies and stable flies are notorious vectors of pain. Horse flies can transmit anaplasmosis, and 20 to 30 of them can drain 100 milliliters of blood from an animal over a period of six hours. It is interesting to note that the large-sized horse fly prefers dark colored cattle. Pinkeye, or Moraxella bovis , is the result of the face fly, which lives off the secretions of livestock. They can also transmit infectious bovine rhinotrache- itis (IBR) and brucellosis. It is one of the most common specie of flies and causes perhaps the most common problems. Face flies not only carry pathogens, but their feet are equipped to cause abra- sions to eye tissue, opening a pathway to severe pinkeye infection. In our area, some pinkeye outbreaks are broken only by culturing the pathogen specific to a given herd and developing a vaccine and health protocol from that process. Although they do not bite, houseflies are simply annoying, filthy insects that carry a variety of bacteria and worm eggs from place to place. Prepare to be scared According to a Hoard’s Dairyman February 25 th, 2020 Milk Quality article, extensive research is underway on Houseflies and Stable flies on New York dairy farms. Investigators Carlos San- tisteban, Valeria Maria Alanis Gallaro, and Jeffery G. Scott have begun collect- ing and documenting species of bacteria on a wide range of internal and external body parts of flies. Most recently, the New York dairy scientists captured 42 flies and cultured an amazing 228 isolates from their meager catch. Their research will continue, with the study of E vEn thE S mallESt C omponEntS C an h avE a B ig i mpaCt Micro-Cell® probiotics are a small yet critical component and help your cattle maintain an ideal intestinal balance. According to research trials, the strain Lactobacillus acidolphilus BT-1386 found in Micro-Cell probiotics has been shown to: • Decrease shedding of E. coli O157:H7 1 • Reduce re-infection of Salmonella 1 • Increase average daily gain 2 • Improve feed to gain 3 Ask your nutritionist about including Micro-Cell in your ration today! Learn more at Micro-Cell-US.com. 1 TabeES,Oloya J,DoetkottDK,BauerML,GibbsPS,KhaitsaML.Comparativeeffectofdirect-fedmicrobialson fecal sheddingof Escherichia coli O157:H7and Salmonella innaturally infected feedlotcattle. J.FoodProt.May2008;3(71):539-544. 2LallemandAnimalNutrition.Unpublished.UnitedStates.1996. 3HutchesonDandLallemandAnimalNutrition.Unpublished.UnitedStates.1986. © 2019. Micro-Cell is a registered trademark of Lallemand Animal Nutrition. Not all products are available in all markets nor are all claims allowed in all regions. www.lallemandanimalnutrition.com Tel: 1.800.541.5598 Email: LAN_NA@lallemand.com the spread of mastitis being one of their top priorities. They’ve discovered that Houseflies have a flight range of four miles and can simply land on an object to disperse bacteria. Regurgitation and defecation are other options for these pests. Bristles and glandular hairs on House- flys’ legs release a sticky substance that enhances the adhesion of bacteria to the exterior surface. The scary part: Flies are capable of dispersing antimicrobial resis- tance (AMR) genes among animals and humans. They can act as vectors of multi-drug resistant bacteria and transfer them between different environ- ments. This means, for example, a fly could carry an AMR E. Coli bacteria, and that bacteria could later confer the AMR gene to a Staph bacteria picked up on his feet four miles away. Control Keep your place clean, scrape your lots often. Additionally, there are many effec- tive fly control products on the market. Use them, your cattle will thank you. 