The relationship between estrous behavioral score and time of ovulation in dairy cattle

F. J C M Van Eerdenburg, D. Karthaus, M. A M Taverne, I. Merics, O. Szenci

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

One of the major contributors to poor fertility of a dairy herd is ineffective detection of estrus. Recently, it has become evident that cow factors contribute largely to low detection rates. Until now, standing behavior has been the symptom used to determine the right moment for insemination. However, standing behavior is not observed in over 50% of the cows in estrus in a number of herds, and no data are available to relate the moment of ovulation to other estrous symptoms. Therefore, in the present study, cows were observed for a number of visual signs of estrus, twice per day for 30 min, and the moment of ovulation was estimated by transrectal ultrasonographic scanning of the ovaries. In this study, 100 cows were detected in estrus visually, using a scoring system. Standing behavior was observed in 50% of those cows, although there was more than one cow in estrus at a time in most (85%) cases. There was no correlation between follicular size and ovulation time or estrous behavior score. Levels of 305-d milk yield and parity were also not correlated with estrous behavior scores. However, a significant correlation (0.31) was found between detection score and day of ovulation. A retrospective analysis revealed that cows that ovulated O to 24 h after artificial insemination (AI) scored almost three times the number of estrous behavior points compared to the ones that ovulated 24 to 48 h after AI. Ovulation more than 48 h after AI resulted in pregnancy in only 15% of the cows.

Original languageEnglish
Pages (from-to)1150-1156
Number of pages7
JournalJournal of Dairy Science
Volume85
Issue number5
Publication statusPublished - May 2002

Fingerprint

Ovulation
dairy cattle
ovulation
Estrus
cows
Artificial Insemination
estrus
artificial insemination
Estrus Detection
signs and symptoms (animals and humans)
Insemination
Parity
estrus detection
Fertility
Ovary
Milk
parity (reproduction)
dairy herds
insemination
milk yield

Keywords

  • Estrous behavior
  • Follicular size
  • Parity
  • Pregnancy outcome

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)
  • Food Science

Cite this

Van Eerdenburg, F. J. C. M., Karthaus, D., Taverne, M. A. M., Merics, I., & Szenci, O. (2002). The relationship between estrous behavioral score and time of ovulation in dairy cattle. Journal of Dairy Science, 85(5), 1150-1156.

The relationship between estrous behavioral score and time of ovulation in dairy cattle. / Van Eerdenburg, F. J C M; Karthaus, D.; Taverne, M. A M; Merics, I.; Szenci, O.

In: Journal of Dairy Science, Vol. 85, No. 5, 05.2002, p. 1150-1156.

Research output: Contribution to journalArticle

Van Eerdenburg, FJCM, Karthaus, D, Taverne, MAM, Merics, I & Szenci, O 2002, 'The relationship between estrous behavioral score and time of ovulation in dairy cattle', Journal of Dairy Science, vol. 85, no. 5, pp. 1150-1156.
Van Eerdenburg FJCM, Karthaus D, Taverne MAM, Merics I, Szenci O. The relationship between estrous behavioral score and time of ovulation in dairy cattle. Journal of Dairy Science. 2002 May;85(5):1150-1156.
Van Eerdenburg, F. J C M ; Karthaus, D. ; Taverne, M. A M ; Merics, I. ; Szenci, O. / The relationship between estrous behavioral score and time of ovulation in dairy cattle. In: Journal of Dairy Science. 2002 ; Vol. 85, No. 5. pp. 1150-1156.
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