Dog WInner World - August 2016

Admininstration Editor: Theo Koekemoer Based in South Africa Theo’s involvement with Bulldogs date back to eary 1970’s He is a specialist Bulldog judge. https://www.facebook.com/groups/800162470077609/ email: dogwinnerworld@gmail.com To advertise contact Theo Koekemoer on Facebook or send an email to dogwinnerworld@gmail.com Rates: Cover: $75 Double or Single Page: $10 (Payment by Paypal to the following email address: theo@bullishmagazine.com or Western Union Dog Winner World: Aug 2016 Page: 2

Cover dog Index 2 Administration 4 Our Cover Dog - Carolina 11 From the Editor 61 Semencropreservation 84 Design Ads

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Our Cover Dog Name of the dog: BGCH Blanch-o’s Carolina Herrera Sire: Blanch-O’s Tecuani

Dam:

Cem-Anahuac Xoconoztli Date of Birth: September 5, 2012 Country: USA Owner: Anna-Maria Barfoot,

Debbie & John Caponetto

Breeder:

Debbie & John Caponetto Breed:

Xoloitzcuintlé Handler:

José Miguel Sanchez TITLES 1. CH Americas & Caribbean 2016 2. AKC Champion (American) 3. AKC Grand Champion (American) 4. AKC Bronze Grand Champion (American) 5. CH Mexico 6. CH UNCECEM 7. CH Columbia 8. GCH Columbia 9. CH Costa Rica 10. GCH Costa Rica 11. CH Cuzcatleco 12. CH El Salvador 13. GCH El Salvador 14. CH Guatamala 15. GCH Guatamala 16. CH Latinoamerica 17. CH International 18. CH Panama 19. GCH Panama 20. CH Nicaragua 21. GCH Nicaragua 22. CH DIRAIGEM 23. CH Panamerican

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From the Editor

Dear readers, adverrisers and designers of Dog Winner World Congratulations to the owners of Bandit, lovely Staffordshire Bull Terrier who has once again took top honours in the ring in South Africa, This time he was crowned Goldfields Kennel Club Dog of the Year 2016. Well done.

Our cover dog is the suoer Karolina’owned by Anna-Maria Barfoot. Thanks for the super design Omar Vega.

Theo

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Semen Cryopreservation Semen Cryopreservation

By Mario Smuts smutsmp@vetfertility.co.za Dog breeders often have to consider on how to proceed with responsible breeding when natural mating start to fail. Decisions are tough when breeders do not own nor have access to both studs and bitches and they often have to utilise the genetics of males who lives far away to improve their genetic lines. One way of overcoming these challenges is to revert to artificial insemination (AI) procedures, also known as assisted reproduction. Artificial insemination refers to the process whereby semen from the male dog is manually collected and deposited into the reproductive tract of the female.

On the male side, assisted reproduction begins with a thorough breeding soundness evaluation (BSE) of the stud performed by an experienced registered veterinarian. The BSE serves to confirm fertility of the stud before attempts are made to donate his semen for either fresh, chilled or frozen semen AIs. Breeders should insist to have proof of a recent breeding soundness evaluation (BSE Report) before considering purchasing either the stud or his semen for their own breeding. One recent litter is not a guarantee of sound fertility.

Common reasons for freezing semen is for the transfer of genetic material from a superior stud over far distances either locally or for purposes of import or export, to preserve one’s own genetic material for future breeding and/or insurance purposes against the loss of a stud through death or infertility. Semen quality should be of high standard prior to freezing since a fairly large percentage of sperm is lost during the freezing process. Although there might be exceptions to the rule, studs younger than 18 months and those over 8 years of age should preferably not be considered for freezing purposes due to lowered semen quality. Breeders should also know that in certain cases semen from apparently healthy, fertile studs might not freeze well.

Once semen is collected from a stud for freezing purposes, the quality of the semen should be evaluated by comparing it against a list of proven fertility guidelines. Each ejaculate consists of three fractions namely the pre-sperm-, sperm rich- and post-sperm fractions.

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Semen Cryopreservation For purposes of semen freezing only the sperm rich fraction should be used.

Evaluations include macroscopic indicators such as volume (0.5ml – 5.0ml pending on breed), colour (clear, grey, ivory), smell and marbling whereas microscopic indicators include sperm motility (¹70% progressively motile), concentration (200 million/ml – 2 billion/ml), consistency, morphology (>60% normal morphology), pH, and cytology.

Since frozen semen is compromised during freezing/thawing (lower energy reserves in comparison to fresh collected semen) the decision to either go-ahead or refrain from freezing a specific semen sample should carefully be considered.

It is advisable to first collect semen from a stud for evaluation purposes only followed by another sample or two for freezing purposes within the following 2 to 6 days.

Breeders should ensure that they obtain a comprehensive freeze/thaw report of the frozen semen indicating the post-thaw quality of the semen and recommended dose to be used per insemination. Without these detailed reports, export of frozen semen becomes a huge burden to breeders as well as for veterinarians performing AIs. Used correctly, semen freezing is a useful tool in improving the overall quality of all canine breeds by utilising a wider range of potential genetics. If it is used to eliminate undesirable characteristics (rather than bypass them), or to improve or potentiate desirable ones, it will have a positive effect whenever used.

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