ADVICEFROMTHE VET
really important to vaccinatethe marefor several conditions during pregnancy. This ensures that the mare’simmune systemisprimed, and that her antibodiesare present in the colostrum which will provide the foal with protection in itsearly life. We recommend that all mares receivea fluand
tetanus boosterand awormer in the month before foaling, but pregnant mares also have additional vaccination requirementsthat it is important to knowabout. Equine herpesvirus causesabortions in pregnant mares and cancause death in young foals. We recommend vaccinatingagainstequine herpesvirus atmonths five,seven and nine of gestation, as this significantly reduces the risk. Rotavirus cancause severediarrheainfoals. Vaccinating themareateight, nine and tenmonths of gestation is recommended on breeding studs. If youhaveany questions about artificial insemination in your mare, please call one of our experienced vets on 01295 670501.
ABOUT THE AUTHOR to checkthat no twins arepresent.
• 42 days: The mareundergoes ahormonal change at around day35ofpregnancy,where equine chorionic gonadotropin becomes the predominant hormone maintaining the pregnancy. This scan is done to ensurethatthe embryohas survived this transition successfully.
Afterthis, manymares arescanned a couple of months beforetheyare due to ensurethe pregnancyiscontinuing in a
healthymanner.The duration of pregnancy in the mareisaround 345days.
As your mare’spregnancy progresses, she
will requireanincrease in her daily rations to account forher newenergyrequirements. Good qualityroughage should be provided on an ad-lib basis, with supplementation of stud mix being required in the lastthree months of pregnancy. This should alwaysbereviewedwith your mare’s body condition scoretoensurethatshe remains at the optimum weight, as being overweight cancause issuesfor foaling mares as well. Foals areborn with apoorly developed
immune systemand acquiretheir immunityvia the colostrum provided by their mothers, so it is
Emily Douglas-Osborn BVScMRCVS Aftergraduating from the University of Bristolin2015, Emily completed an Internship with Avonvale beforeheading off to work at afirst option equine practice. Shereturned to Avonvale in November 2017and hasdeveloped akeen interestinpoor performance, orthopaedics, reproduction work and all areasofgeneral practice.
•AvonvaleVeterinaryPracticeLtd. RatleyLodge,Ratley BanburyOX156DT
www.avonvaleequine.co.uk 01295670501
PleasementionCentralHorseNewswhenresponding toAdvertisementsAPRIL/MAY2021
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