The presence of a single gene on the Y chromosome, however, will induce the development of the testes in an embryo destined to become male. Testis development is a critical part of male differentiation because this organ will secrete two substances required for the normal development of the male reproductive tract: Conversion of testosterone to dihydrotestosterone will induce development of the prostate gland, the male urethra, the penis, and the scrotum. Subsequently, the testes descend into the scrotum and complete the development of the male reproductive system.
Effect of body weight, age and breeding history on canine sperm quality parameters measured by the Hamilton-Thorne analyser. Regarding the impressive possibilities of these systems, further research is required to determine which CASA measurements are of clinical importance in canine andrology. In the present study, the sperm quality parameters obtained by the Hamilton-Thorne Semen Analyser Ceros Moreover, the sperm quality parameters of dogs with a different breeding history were compared. The sperm-rich fraction was collected from dogs of 50 different breeds, which were presented at our department. Immediately after collection, the concentration, the total sperm output TSO and 13 different sperm motility and velocity characteristics were measured by the HTR.
Performing a complete canine semen evaluation in a small animal hospital.
Your dog may have achieved show or performance goals, at which time it is appropriate to collect and freeze his semen for future litters of champions. Unfortunately many factors can adversely affect semen quality in the dog, including age, infections, diet, medications, environmental factors, and unrelated health conditions. Most dogs experience a decline in sperm production with age.
Glossary Semen Collection from Dogs Semen is collected from dogs for breeding soundness exams, as well as for artificial insemination. Semen collected for insemination can be used fresh, or can be cooled and shipped to another location. Canine semen can also be frozen, allowing long term storage. Another indication for collecting semen is to obtain prostatic fluid for culture or cytology in cases of suspected prostatic disease.