Evaluation of tear secretion by phenol red thread test in Holstein cows


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SAGLAM K. A. M. I. L. , DUZ E. R. K. A. N.

MEDYCYNA WETERYNARYJNA-VETERINARY MEDICINE-SCIENCE AND PRACTICE, vol.78, no.7, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 78 Issue: 7
  • Publication Date: 2022
  • Doi Number: 10.21521/mw.6657
  • Title of Journal : MEDYCYNA WETERYNARYJNA-VETERINARY MEDICINE-SCIENCE AND PRACTICE
  • Keywords: cow, tear secretion, KERATOCONJUNCTIVITIS SICCA, CORNEAL SENSITIVITY, SCHIRMER, DOGS, HORSES, SEASON, SHEEP, SEX

Abstract

This study aimed to measure the normal physiological tear production of Holstein cows with the phenol red thread (PRT) test to determine the reference value specific to this test and to examine the effect of the number of births, age and seasonal air temperature on the amount of tear production. The study was performed on 50 Holstein cows aged 3-7 years in two groups. The PRT test was performed in group 1 in January and in group 2 at the end of May. The age and birth numbers of all animals were recorded.