Tag Archives: Laura Patterson Rosa

MM DNA Testing!

Summerwind Marchadors has the DNA  results for most of our Marchadors!   Fascinating!

b698fa_092bb8575c9a8b9d873506d8ca8da0a0Our DNA – genetic analysis was done  by Heather Holl, of Etalon Diagnostics Lab, CA who was looking for more samples for her study to develop a new genetic test to prove parentage.   Along with contributing to her research project, we got a full report on each horse.  It is exciting!

From a breeding standpoint, we can report now on many of our Marchadors characteristics!

Of particular interest to us is the “gait” gene DMRT3.   This is one of the genes identified that is involved with horses that gait laterally. However, it does not perfectly describe horses that possess a diagonal gait.   Indeed some of best horses do not display this gene.  Additionally, this DMRT3 gene has been found in trotting horse breeds.   So, current thinking is that perhaps this gene describes a horse that would rather stay in gait instead of transitioning up into canter, which is why now, it is sometimes described as “loss of canter”.

195b6c9d6dc180f25150928a54e59a6cBecause DMRT3 is not “THE gait gene” as so many describe it, Summerwind Marchadors is also supporting the Equine Genetics Research lab at UF, Gainesville.   This project is headed by Dr. Laura Patterson Rosa,  testing for gait gene secrets in OUR Marchador breed.  For more information or to contribute to their research,  follow this link: http://www.neighdna.com/gait.html

We will start adding this information to our horse’s pages on the website, but here is the summary report on John’s gelding Artemis do Summerwind, as an example of the information we have now on every horse.

Genetic Profile Test Results Horse: Artemis Do Summerwind Owner: John Kelley

Disease: NONE

Color:  Aa, ee, G/n, nd1/nd2, W20/n

Traits:  GG (curiousity), TT (Endurance Type), DMRT3/DMRT3

Disease: Artemis Do Summerwind has not tested positive for any recessive disease alleles on this panel.

A new discovery test for West Nile indicates he may be more susceptible to West Nile.  A new discovery test for a Subfertility gene indicates 2 alleles are present.  In male horses, 4 alleles present may mean they have lower rates of foal production.

Coat Color: Artemis Do Summerwind has two Red alleles and no Black, indicating his base coat color appears Red. One copy of the Dominant Agouti allele was detected; invisible on a Red base (it pushes/restricts Black out to points; legs, ear tips, etc. appearing Bay). One Grey allele was detected which may result in greying of the entire coat (possibly appearing White at maturity). One Dominant White 20 allele was also detected which may result in White markings.

His DNA also tested on a discovery platform to indicate he is heterozygous for non-Dun pimitive markings and there may pass it 50% to his offspring.

As a result of the allele count in each of the following, he has a minimum 100% chance of passing Red and 50% Dominant Agouti and 50% Grey and/or Dominant White 20 to any offspring.

His DNA also tested on a discovery platform to indicate he is heterozygous for non-Dun pimitive markings and there may pass it 50% to his offspring.

Traits:  Artemis testing has indicated the presence of 2 DMRT3 alleles and he may therefore, pass it 100% to his offspring.  2 Curiosity genes (100%) were detected.  He is likely more curious than vigilant.   2 Endurance alleles (100%) were detected; he is likely more distance than Sprint.

Artemis do Summerwind and John
Artemis do Summerwind and John



Genetics Course – Sign up today!

IMG_0370The art of horse breeding has shaped equine genetics since domestication, yet most horse professionals have little understanding of the fundamentals of genetics.  On this six-week online extension course we will examine the underlying mechanisms and inheritance of a number of traits in the horse. Concepts covered will include coat color, genetic disease, parentage testing and some insights on complex traits of performance and behavior.

Brooks Equine Genetics Lab @ the University of Florida
Dr. Samantha Brooks
Teaching Assistant:
lauradvmLaura Patterson Rosa, DVM

100% ONLINE!!

June 27th to August 05th of 2016

The regular price for the equine genetics course is $200 for this course, but using this link, USMMA members have a special discount – $25 off!    If you are a USMMA member, then you can use this link to register for the on-line course and receive the special offer.


Normal registration is $200.  Please use this link for regular registrations for the genetics course without the USMMA discount if you are not  a USMMA member.  


There’s also more information on the Brooks Genetics Lab website: www.ufequinegenetics.org

Future Foal Expands to TX and FL

Future Foal “do Summerwind” expands in May.  Joining the Summerwind investors and breeders are Cathy Pierce of Corpus Christi, TX and Laura Patterson and Victor Rosa of Gainesville, FL.

Cathy Pierce riding Destiny do Summerwind.
Cathy Pierce riding Destiny do Summerwind.nd Laura Patterson and Victor Rosa of Gainesville, FL.

Cathy Pierce fell in love with Marchadors after riding them in Brazil at one of  her exchange student’s family farm.   Cathy adds 2 younger Marchador mares to the Summerwind reservation pool,  with Destiny do Summerwind (La Paz Jivago x Chanel de Miami) and Cassandra do MManor (Frevo da Camaq x Ibiza da Boa Fe).

Read more about Cathy here.


Laura Patterson Rosa and Victor Rosa are Brazilians who are here in 10847891_579911418775370_4464750481639087151_nthe US as Laura pursues her doctorate degree at the University of Florida.    She is a veterinarian who is researching Gait Genetics of the Mangalarga Marchador, but brings many other skills and years of experience to our group.   Victor is a lawyer and trained interpreter and we plan to use his skills daily with our ventures to ensure the quality and diversity of the Marchador breed here by learning, working with Brazil and importing.

Read more about Laura and Victor here.

Future Foal offers frozen semen from 7 Marchador stallions,  sometimes frozen embryos and reservations on Future Foals do Summerwind using our group of 14 Marchador mares.   Future Foal reservations are available for a 2017 foal.

Our group of resources, investors and breeders are located in Scottsdale AZ, Sedona AZ, Pagosa Springs CO, Gainesville, FL and Corpus Christi, TX.   Please contact us if you are interested in investing in creating and promoting the Mangalarga Marchador horse in North America.

Meet Laura Patterson Rosa and Victor Rosa

Meet Laura Patterson Rosa, PhD

“A horse woman through my whole life, the first time I sat on a saddle I was only two years old – my family tells that I cried for hours after they took me off the horse that day, because I wanted to ride more. As a kid, I would ride horses occasionally, usually when we went to the farm, and my horses were already Marchadors back then: Melado and Anel, both very sweet and picada gaited. In my teen years I found out about show jumping. The opportunity to ride constantly and improve my skills drove me to be a professional show jumper in Brazil.  Other Marchadors came along, because after training my sport horses, I would ride them on the beach nearby to relax: Bacana and Arizona were my loyal geldings.

Losing one of them due to colic made me decide to go to vet school. My absolute love for these animals meant that I wanted to know what to do in order to improve their life quality and expectation. During vet school I consulted and selected nine Campolina horses (another Brazilian gaited breed) for the first exportation to Mexico. I  graduated vet school and got involved with equine genetics, being invited to do a Ph.D. at University of Florida, supervised by Dr. Samantha Brooks, reference in equine genetics. Currently I live in Alpine TX, establishing an equine studies program at Sul Ross State University.   It’s a great place for my horse loving daughter too.

The partnership. Koyote kisses Laura.
The partnership. Koyote kisses Laura.

As a Brazilian and horse rider myself, I have a great respect for the Mangalarga Marchadors, the national horse of Brazil. I strongly believe that Lynn and John Kelley’s Future Foal and Summerwind Marchadors program provide the best of Mangalarga Marchador horses, selecting from the best bloodlines while keeping the Brazilian registration and selection in order to achieve the same standards applied in Brazil. My husband and I are proud supporters of this enterprise and now part of the Summerwind family.”

Meet Victor Rosa

Victor translating for us in Brazil with Hytalo Bretas, a top trainer there.

“I am a Brazilian lawyer and interpreter. I was born in the state of Minas Gerais, birthplace of the Mangalarga Marchador breed. Growing up, I rode Marchadors frequently with my family and friends, in cavalgadas, and attended horse shows at Gameleira, where the Mangalarga Marchador National Show takes place every year.

After moving to Salvador – Bahia, I lost contact with horses almost completely, so I focused on playing sports, one of my passions. There, I played football for 6 years in Brazilian football leagues as a wide receiver.

In Salvador, I graduated from Law School and worked for a well-established law firm. I also had the chance to work as an interpreter with American groups doing humanitarian work in poor areas of the city, and later with directors of multinational companies and groups visiting schools and universities.

IMG_0369With Laura, I started attending horse shows and auctions again, visited farms, and met some of the best breeders in Brazil. I have traveled to Brazil with Summerwind breeders and investors, where we had a great time visiting farms and learning more about the breed.

My goals as part of Summerwind Marchadors are to promote the Mangalarga Marchador in North America, and contribute to the improvement of the breeding, selection and training of Marchadors by facilitating the exchange of information between North American and Brazilian breeders and trainers.”