VetCor Canine Reproduction-Stud Dog Infertility

VetCor Canine Reproduction 14115 Greencrest Drive, Surrey, B.C., V4P 1L5 Canada, 604-535-7398, info@vetcor.ca
How to find us Dr. van der Ende Boxjoy Kennels Services Provided Ovulation Timing Semen Evaluation TCI Infertility in the Bitch Infertility in the Stud Dog Fresh Chilled and Frozen Semen		Stud Dog Infertility
Three fractions of dog semen On the assumption that we are not including monorchid or bilaterally cryptorchid dogs in the scope of this discussion, semen evaluation is the key to determining stud dog fertility. The ejaculate is divided into three fractions, the first fraction being clear and lubricating in nature, the second fraction is the sperm rich fraction (SRF) and the third fraction is prostatic fluid. Analysis of the semen requires examination of the Sperm Rich Fraction for concentration (number of sperm), progressive motility and morphology. Low concentration; many coiled tails		It is not enough to say “there are a lot of sperm and they are wiggling”. Sperm motility must be assessed immediately and on a warm slide. Morphology requires a special staining process of a sample of the sperm. Sperm production from germinal cell to mature sperm takes 72 days. For this reason what you examine at one point in time may be a reflection of what happened nearly 3 months previously. If it appears that fertility is compromised either by numbers or morphology or motility, it is wise to repeat the test procedure in 3 months. Infection, inflammation, stress, poor nutrition, fevers, tumors or medications can all influence sperm quality. The result may be low numbers, poor motility or increased number of morphological defects. Good concentration but numerous defects

VetCor Canine Reproduction
14115 Greencrest Drive, Surrey, B.C., V4P 1L5 Canada, 604-535-7398, info@vetcor.ca

Semen Evaluation

Stud Dog Infertility

Three fractions of dog semen

On the assumption that we are not including monorchid or bilaterally cryptorchid dogs in the scope of this discussion, semen evaluation is the key to determining stud dog fertility.

The ejaculate is divided into three fractions, the first fraction being clear and lubricating in nature, the second fraction is the sperm rich fraction (SRF) and the third fraction is prostatic fluid. Analysis of the semen requires examination of the Sperm Rich Fraction for concentration (number of sperm), progressive motility and morphology.

Low concentration; many coiled tails

It is not enough to say “there are a lot of sperm and they are wiggling”. Sperm motility must be assessed immediately and on a warm slide. Morphology requires a special staining process of a sample of the sperm.

Sperm production from germinal cell to mature sperm takes 72 days. For this reason what you examine at one point in time may be a reflection of what happened nearly 3 months previously. If it appears that fertility is compromised either by numbers or morphology or motility, it is wise to repeat the test procedure in 3 months.

Infection, inflammation, stress, poor nutrition, fevers, tumors or medications can all influence sperm quality. The result may be low numbers, poor motility or increased number of morphological defects.

Three fractions of dog semen

Low concentration; many coiled tails

Good concentration but numerous defects