Description

• Title:
  CHLAMYDIA IN CATTLE REPRODUCTION
• Creator:
  Maciaszek, Katarzyna
• Description:
  Well-run reproduction, both in beef and dairy herds, determines the profitability ofproduction. Knowledge of the factors affecting the reproduction of cattle allows you toundertake procedures to prevent or reduce their adverse impact. In addition, in the case ofdisease agents with zoonotic potential, knowledge about them determines the safety ofpersonnel working with cattle on a daily basis – breeders, veterinarians. An example of such afactor is bacteria from the Chlamydiaceae family, gram-negative microorganisms found inmany animal species as well as in humans. For cattle, the most pathogenic are C.abortus,C.pecorum and C.pistici. The disease has been known for a long time, but its role in cattlebreeding is still underestimated. The results of monitoring studies conducted in differentcountries differ quite significantly from each other, and the obtained results indicateprevention from 0.4% through 4.44% up to 100% of the examined herds. Different species ofChlamydia cause different forms of disease. Chlamydia abortus is mainly associated withpathologies in the genital organs, abortions, embryonic death, metritis and mastitis. Inaddition to abortions, it can cause dead calves to be born at the right time or weak newbornsthat die within a few days for unspecified reasons. In the subclinical form, it may beresponsible for lower fertility rates and high somatic cell counts. Epididymitis and alveolargland inflammation may occur in bulls. Chlamydia pecorum, in turn, is more pathogenic forcalves, causing inflammation of the intestines, brain and spinal cord, joints, lungs, cornea andconjunctiva, and kidneys. However, this division is not very rigid, as there are cases ofobtaining positive results from vaginal swabs towards Ch. abortus of several-week-old calves.Ch. psittaci is extremely rare in cattle, but it can be responsible for abortions and pneumonia.Long-term antibiotic therapy with the use of tetracyclines, macrolides and fluoroquinolonesbrings some results in the form of alleviation of clinical signs associated with the presence ofchlamydiosis in the herd. However, it does not reduce shedding and may lead to latentinfections. In order to reduce the disease, the focus should be on maintaining an appropriatestandard of hygiene and biosecurity. Separating infected animals, removing aborted fetusesand quarantining newly introduced animals are the basic elements of the fight against thisdisease entity. Unfortunately, there are no vaccines against chlamydia registered for cattleavailable on the Polish market. However, when using a pharmacological cascade, apreparation available for sheep, providing protection against Ch. abortion. The combinationof vaccination, appropriate maintenance and hygiene conditions, and biosecurity make itpossible to control chlamydiosis in dairy and beef cattle herds.
• Object availability:
  free access
• Rights: https://creativecommons.org/licenses/by-nd/4.0 ;
  Prawa autorskie (c) 2025 Maciaszek k
• Date:
  2023.07.09
• Type:
  info:eu-repo/semantics/article;
  info:eu-repo/semantics/publishedVersion
• Language:
  English
• Source:
  Translational Research in Veterinary Science; Vol. 6 No. 1 (2023); 19;
  Translational Research In Veterinary Science; Tom 6 Nr 1 (2023); 19;
  2657-4489
• Format:
  application/pdf
• Publisher:
  Nicolaus Copernicus University in Toruń
• Relation: https://apcz.umk.pl/TRVS/article/view/63757/43286
• Subject:
  chlamydia;
  reproduction;
  abortions;
  cows
• Identifier: https://apcz.umk.pl/TRVS/article/view/63757
• Data provider:
  Akademicka Platforma Czasopism
• Can I use it?:
  seek permission
• Type:
  text