Humblot, Patrice
- National Union of Cooperatives for Animal Insemination (UNCEIA)
Abstract
Deficiencies in bull mating behavior have implications for bovine artificial insemination activities. The aim of this study was to identify the compounds present in fluids emitted by cows during estrus, which could enhance bull libido. Chemical analysis of urine samples from cows led to the characterization of molecules varying specifically at the preestrous and estrous stages. The synthetic counterpart molecules (1,2-dichloroethylene, squalene, coumarin, 2-butanone, oleic acid) were used to investigate the biological effects on male sexual behavior and sperm production. When presented to males, 2-butanone and oleic acid synthetic molecules significantly lowered mounting reaction time and ejaculation time (-33% and 21% after 2-butanone inhalation, respectively, P < 0.05). The "squalene +1,2-dichloroethylene" combination induced a 9% increase of sperm quantity (P < 0.05). This study suggests that the identified estrous-specific molecules could be part of the chemical signals involved in male and female mating behavior and may be used for a wide range of applications. The identification of these molecules may have implications for the cattle breeding industry. (C) 2015 Elsevier Inc. All rights reserved.
Keywords
Cow; Estrus; Urine; Chemical signal; Bull; Sexual behavior
Published in
Theriogenology
2015, volume: 83, number: 9, pages: 1381-1388
SLU Authors
UKÄ Subject classification
Clinical Science
Publication identifier
- DOI: https://doi.org/10.1016/j.theriogenology.2015.02.004
Permanent link to this page (URI)
https://res.slu.se/id/publ/89636