Canis ISSN: 2398-2942

Ovulation detection

Contributor(s): Kyle Braund, Carlos Pinto

Overview

  • The luteinizing hormone triggers follicle maturation and pre-ovulatory luteinization, and ultimately induces ovulation. Therefore, detecting the LH surge to predict ovulation is an accurate method of ovulation detection and timing of insemination in dogs:
    • Commercial assays for canine LH are not readily available in most countries.
  • Detection of concentrations of blood progesterone in the dog is of particular interest because, uniquely in the dog, ovulation takes place in a high progesterone environment (15-30 nmol/L). An initial rise in baseline concentrations of serum progesterone (3-6 nmol/L) is coincidental with the LH surge and continues to increase significantly until ovulation and thereafter throughout pregnancy.
    • Commercial assays for canine blood progesterone is readily available in most countries Progesterone assay.
    • Detection and interpretation of hormonal progesterone values are the most acurate clinical method to predict ovulation, to determine the onset of ovulation, and to determine the completion of the ovulation process Hypothalamic-pituitary-ovarian axis diagram - female.

Sampling

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Result Data

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Further Reading

Publications

Refereed papers

  • Recent references from VetMed Resource and PubMed.
  • Manothaiudom K, Johnston S D, Hegstad R L, Hardy S K (1995) Evaluation of the ICAGEN-Target canine ovulation timing diagnostic test in detecting canine plasma progesterone concentrations. JAAHA 31(1), 57-64 PubMed.

Other sources of information

  • Johnston S D, Root-Kustritz M V, Olson P N S (2001 )Canine and Feline Theriogenology. Philadelphia, W B Saunders Co.


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