The Slick Hair Coat Locus Maps to Chromosome 20 in Senepol-Derived Cattle

January 2007 in “ Animal Genetics ”

Maxy Mariasegaram, C. C. Chase, Jose X. Chaparro, T. Olson, Rick A. Brenneman, Randall P. Niedz

slick hair coat chromosome 20 genome scan interval mapping microsatellite markers SRD5A2 gene androgen-related processes phenotype

TLDR The gene for slick hair in Senepol cattle is located on chromosome 20 and may involve the SRD5A2 gene.

In the 2007 study, researchers identified the genetic basis for the slick hair coat of Senepol cattle, which contributes to their heat tolerance. They conducted a genome scan and interval mapping, genotyping 14 microsatellite markers in 36 cattle from two pedigrees, and found the slick hair locus on chromosome 20 (BTA20) with a maximum LOD score of 9.4. Further genotyping in six additional pedigrees (total n = 86) narrowed down the locus to a specific interval. The study also suggests a potential role for the SRD5A2 gene, which is involved in androgen-related processes, in controlling the slick hair phenotype. This research could help introduce heat tolerance traits into other cattle breeds, improving cattle production in warm climates.

View this study on onlinelibrary.wiley.com →

Discuss this study in the Community →

Research cited in this study

1 / 1 results

Different Levels of 5α-Reductase Type I and II, Aromatase, and Androgen Receptor in Hair Follicles of Women and Men with Androgenetic Alopecia

research Different Levels of 5α-Reductase Type I and II, Aromatase, and Androgen Receptor in Hair Follicles of Women and Men with Androgenetic Alopecia

416 citations, September 1997 in “Journal of Investigative Dermatology”

People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.

Related Community Posts Join

6 / 1000+ results

community Should I get transplant #4 or just shave my head?

in Transplants 169 upvotes 3 months ago

A 36-year-old considering a fourth hair transplant is advised to either shave his head or use a hair system due to poor results from previous transplants and late medication use. He plans to consult top surgeons and adjust his current treatments, including finasteride and minoxidil.

community personal progress (~8-9months) with fin(1.25mg)/min/needling/niz

in Progress Pictures 571 upvotes 2 years ago

A user's personal hair loss progress with treatments, including finasteride (1.25mg), minoxidil, needling, and Nizoral; and advice from other users on how to perform the needling correctly.

community When did you know it was time to intervene in your hair loss? The truth hurts, but it’s good for someone to be up front with you

in Chat 54 upvotes 1 year ago

A person realized they were balding when their sister pointed it out and is now using a combination of hair loss treatments including finasteride, minoxidil, microneedling, and plans to add dutasteride and RU58841. Others in the conversation emphasize the importance of honesty about hair loss and caution against an overly aggressive treatment regimen, especially before a hair transplant.

community 1 year results finasteride and minoxidil once daily nothing else

in Update 845 upvotes 4 weeks ago

The user experienced significant hair regrowth after one year of using finasteride, minoxidil, and Nizoral shampoo, with no side effects reported. They noted improved social interactions and emphasized the importance of consistency in treatment.

community ~5 months topical minoxidil + oral finasteride results (swipe images). Slacked with minoxidil this past month, trying to wean off anyways. My last update because I’m hopping off fin and switching to RU in a few weeks (nothing to do with fin efficacy, just experimenting).

in Progress Pictures 145 upvotes 4 years ago

The user experienced significant hair thickening after using topical minoxidil and oral finasteride for about 5 months and is considering switching from finasteride to RU58841. Other users encourage the original poster to continue the current treatment due to the positive results.

community 2years finasteride +3months minox+dermarolling

in Progress Pictures 1109 upvotes 2 years ago

A user's progress with hair loss treatments over the past two years, including finasteride, minoxodil and dermarolling. Replies included speculations about whether or not this was the result of a hair transplant. The user confirmed that it was just meds.

Related Research

1 / 1 results

research The Slick Hair Coat Locus Maps to Chromosome 20 in Senepol-Derived Cattle

51 citations, January 2007 in “Animal Genetics”

The gene for slick hair in Senepol cattle is located on chromosome 20 and may involve the SRD5A2 gene.