LSU BEEFupdate

cms.lsuagcenter.net

LSU BEEFupdate

LSUBEEFupdateNewsletter: May, 2008May AnnouncementsThank you to all of those who participated in the April Calf toCarcass Program Tour, and a special thanks to our sponsors, TheLouisiana Cattlemen’s Association, Mr. Rayburn Smith, Lone Star Feed,the Hitch family, Express Ranches and Purina, for making this trippossible.Thursday, May 8th - 2008 Hay/Forage Day at the SoutheastResearch Station near Franklinton, LAFrom 8:30 AM - 4: 30 PM, the 2008 Southeast Research Station Hay/Forage Day will emphasize forage planting (especially legumes),harvesting and quality.Animal Health - AnaplasmosisAnaplasmosis: Prepare aprevention plan now.Anaplasmosis is disease of cattlethat is caused by the bloodparasite Anaplasma marginale.This organism infects red bloodcells, which leads to anemia.A. marginale can also infectsheep and goats and some wildruminants, including whitetaileddeer. These animals don’tusually show signs of disease,but can possibly serve as areservoir for the disease. Thisdisease is endemic in someparts of Louisiana, meaningthat it occurs regularly and isbasically “native” to the area. Beaware that due to increasedmovement of cattle in previousyears, some areas that havebeen considered non-endemicin the past may now have moreanaplasmosis. With cattlemoving in and out of hurricaneand drought ridden areas, thepossibility of introduction ofdiseases, including anaplasmosis,increases.TransmissionAnaplasmosis is transmitted byinsects or people. Horse flies,and some species of ticks are themain insect vectors. Spread byother biting flies (such as stableflies), horn flies and mosquitoesis unlikely, but possible duringsevere infestations. People canspread anaplasmosis throughreuse of needles, and impropercleaning of instrumentsduring dehorning, castrationor tattooing. In one study, if aneedle was used on an infectedcow, the next animal had about a60% chance of getting infected ifthe same needle was used.Clinical DiseaseOnce the Anaplasma organisminfects an animal it usuallyincubates in the body for 3-5before the animal actually getssick. Cattle less than two years ofage rarely show any signs, evenif they become infected. Cattleolder than two years of age havemore severe disease and aremore likely to die. Whether ornot an animal shows any signs, ifit becomes infected, it is usuallyinfected for life. These carrieranimals are immune to futuredisease, but become a source ofinfection for other cattle.


May ChecklistMay Spring Calving• Castrate and dehorn any calves missed at birth• Check out condition of bulls during breeding season. Provide supplemental feed if necessary• Monitor cows to make sure females are breeding and conceiving.General Recommendations• Control pasture weeds by herbicide or clipping• Fertilize summer pastures according to soil test recommendations• Check out hay equipment and ensure it is operable• Control Flies• Mob graze remaining winter annual pastures or cut hay to ensure that summer pasture can growAnimal Health - Anaplasmosis, Cont’d from Page 1Outbreaks of anaplasmosisusually occur in summer andfall. Some of the common signsare fever, weakness, depressedattitude, decreased appetite,decreased milk production,and a white or yellow color tothe gums, white of the eye, orvulva. Aggressive behavior isalso common, especially in beefcattle. Abortions may occur infemales and temporary infertilitycan occur in males. Animalswith severe disease may die. Ifthey survive, they are likely to be“poor-doers”. Infected animalswith less severe signs or nosigns at all can have drops inmilk production and infertility/embryonic death. This leads todecreased numbers of calvesborn and decreased weaningweights, both of which addto the financial losses due toanaplasmosis. In endemic areas,some herds may only sufferthese less noticeable problemswithout having the very obviousillness and deaths This makes thedisease harder to recognize butfinancial losses can still be severe.DiagnosisIf anaplasmosis is suspected,producers should contacttheir veterinarian to confirmthe diagnosis. There are otherdiseases such as “red water”(caused by a Clostridium), andleptospirosis that can appearsimilar. There are tests to findcarrier animals. A new test calledthe competitive ELISA (“cELISA”)appears to be the best. Justbeware that in the first daysafter infection, the test maybe negative, even though theanimal is infected. So re-testingis sometimes indicated.TreatmentTreatment of cattle with longactingformulations of injectableoxytetracycline can be beneficialif done in the very early stagesof the disease. Many times cattlearen’t recognized as infected untilthey are severely anemic, andtreatment may be too late. Infact, the stress of treatment maykill the animal, so it’s sometimesbest to leave them alone. Ablood transfusion could beconsidered in valuable animals,but still may not prevent death.Treatment is best reserved forthe remainder of the herd to stopany early infections from gettingmore severe. Treatment of carrieranimals to clear them is notusually effective so should not beattempted.Prevention and ControlFor herds in endemic areasthere is constant potential forexposure, and total prevention orelimination of the disease froma herd is not realistic. Therefore,the goal is to prevent andminimize clinical and subclinicaldisease and production losses.Producers in endemic areasshould assume there is a goodchance they have carrier animalsin their herd that look perfectlyhealthy but can be a source ofinfection, so practices that couldpotentially spread the disease(such as reusing needles) shouldbe eliminated.


2008 Louisiana Calf to Carcass Program TourThe 2008 Louisiana Calf to Carcass Program hadanother educational and enjoyable trip recently.Participants were picked up in Baton Rouge,Lafayette, Alexandria, Shreveport and we evenpicked up two riders on the side of the interstatebetween Natchitoches and Shreveport. As usual,Ms. Sandi Segrera and Vermilion Tours did anoutstanding job of making the trip even moresuccessful.Our first stop was at D & H Cattle Company nearArdmore, Oklahoma. Dillon and H.D. Page havebeen named the top bucking bull contractor of theProfessional Bull Riders Association for the past 5years. If anyone is interested in purchasing someof their heifers, we were informed that at their lastsale their heifers averaged a mere $17,000 a head.We departed D & H and went to the United StatesNational Postal Training Center (hotel and complex)in Norman, Oklahoma to spend the night. Thefollowing morning we stopped by the OklahomaCity Memorial commemorating the people thatdied during the bombing of the federal building.Next, we headed to Yukon, Oklahoma to tourExpress Ranch located on land that the old ChisumTrail went through. They are one of the largestseedstock suppliers of Angus and Limousin cattlein the country. After a unique tour of their cattleoperation, black Clydesdale operation, geneticsand embryo lab, and seeing Mr. Bob Funk’s (owner)43,000 square foot house, Express Ranch treated usto a rib-eye steak lunch.That afternoon we traveled to Wichita Falls, Texasto eat at Fat McBride’s Steakhouse and spend thenight. Wednesday morning we rode to Saginaw,Texas to tour Standard Meat Company. They cutand process steaks for the Outback Restaurants inthe United States. After the tour we went to theFort Worth Stockyards to eat lunch and then startedour long drive back home.I would like to thank our sponsors that helpedalleviate some of our expenses. Those sponsorswere the Louisiana Cattlemen’s Association, Mr.Rayburn Smith, Lone Star Feed, the Hitch family,Express Ranches and Purina.Dr. Tim Page, LSU AgCenterAfter lunch we headed across the Oklahomapanhandle to Guymon and Hitch Feedyard. Wetoured our nine pens of cattle on feed and alsolooked at a good number of pens from otherLouisiana producers. We also got a short tour of theHitch Ranch and their cattle horse operation. Hitchfed us an outstanding barbecue dinner that night.On Tuesday morning we drove to Hereford, Texas totour the White Energy Ethanol Plant that producesethanol and distiller grains (DGs). There are 11cattle feedlots in Hereford and there was a steadystream of trucks coming through to pick up DGs.


Animal Health - Anaplasmosis, Cont’d from Page 2Supplying tetracycline products infeed or mineral supplements willnot totally eliminate problems,but will greatly reduce them.Tetracycline is added to thesesupplements at different levels, somake sure that the supplementis labeled for the “preventionof anaplasmosis” to assure ahigh enough dose. Control ofticks and flies will also decreasespread of the disease. One ofthe most effective means ofprevention is vaccination. Theonly vaccine currently availableis from University Products, L.L.C.(anaplasmosis.com) and not allstates have approval to use thisvaccine. This product is relativelyexpensive compared to othervaccines, but when the costsof deaths, chronic poor-doers,abortions, and milk productiondecreases are all considered, thevaccine may very well be costeffective in herds in endemicareas. The time to vaccinate is inthe early spring. Producers shouldtalk to their veterinarian about theavailability and cost effectivenessof this vaccine in their herds.In non-endemic areas, preventionof infection may be possible withbiosecurity measures, especiallytesting of herd additions withthe cELISA. However, since thistest may miss animals in the veryearly incubation phase, singleuse needles, proper cleaning ofequipment, and vector controlare important just in case a carrierslips into the herd undetected.Vaccination of valuable animalsshould also be considered.Introducing cattle from nonendemicareas to endemic areasshould be done carefully. Ifpossible, introduce new animalsduring the non-vector season (ifthere is one). Consider vaccinationon arrival. If vaccination is notavailable, consider treatment ofthe new animals with long actingoxytetracycline 2 weeks after thevector season starts, or 2 weeksafter arrival if introduced duringthe vector season.Hay and Feed Supplier DirectoryLSU AgCenter is still collecting infomration from Hay and Feed Suppliersaround the state. You can find this information on our website at:www.lsuagcenter.com/beefIf you or someone you know would like to be listed on the LouisianaHay and Feed Supplier Directory, send your information to:jtlackey@agcenter.lsu.edu with your Address, Parish, Telephone Number and Resources Available.Louisiana Market Report - April 2008Cattle receipts for the month of April were 13,692 head, compared to 14,994 in March and 20,633 head reportedin April, 2007Feeder steer prices were mostly 5.00 - 7.00 lower, feeder heifers 4.00 - 8.00 lower. Boning cows sold steady to3.00 lower.Price Comparisons: Late April Late March Year Ago500-550 lb steers 102.00-112.00 102.00-117.00 110.00-120.00550-600 lb steers 91.00-105.00 95.00-101.00 100.00-110.00500-550 lb heifers 92.00-109.00 94.00-100.00 104.00-118.00550-600 lb heifers 90.00-101.00 94.00-107.00 100.00-110.00Boning Cows 50.00-56.00 50.00-59.50 47.00-55.00Article Written by Taylor Cox, USDA Market News.LSU AgCenter Beef Cattle ExtensionDr. Jason Rowntree107 Francioni, Baton Rouge, LA 70803Office: 225.578.3345

More magazines by this user
Similar magazines