Conservation Semen Collection

Conservation Semen Collection

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A.I. Sire List
DNA Explanation

The Cattlemen's Texas Longhorn Conservancy has assembled a collection of foundation semen. Straws are available to CTLR member breeders for purchase at $10 per straw. Our mission is to re-introduce these old genetics back into our gene-pool. Quantities are available for use, not intended to stockpile individuals' personal collections. From bulls we own five or fewer straws, we will only allow use on DNA tested females. We ask breeders to collect male offspring and donate to contribute to this dynamic collection, to assure for posterity the original Texas Longhorn genetics. The A.I. Sire List.pdf shows the number of straws on hand for each bull.

Send us an email from the Contact page to order semen. It is stored at Brushy Creek Custom Sire in Taylor, TX. We will send you an invoice and authorize release of the straws you request.

Hovering over the image will reveal the bull's name. Clicking the image will pop up an enlarged image that includes the bull's description. Please click the A.I. Sire List button to view the complete list of names. Clicking on the individual bull's name in that list will open a pop-up with his pedigree. This software does not have a comparison feature where two or more bulls' pop-ups may be viewed together. To compare bulls side-by-side, we recommend opening more than one browser and navigating to the bulls of interest. The description of each bull gives conservation percentages and Y-haplotypes of the bulls tested with the UC Davis Breed Assignment. For interpretation, please read the linked document DNA Explanation.

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UC Davis Conservation score 91% H3Y1 Y-haplotype (Angus, Shorthorn & Texas Longhorn)

WR Magnum 169

WR Magnum 169

UC Davis Conservation score 97% H14Y1 Y-haplotype (Hereford & Texas Longhorn)

WR 1900

WR 1900

This bull was not tested but his son Chisos scored 91.9% Conservation with a H14Y1 Y-haplotype.

WR 2305

WR 2305

UC Davis Conservation score 95% H25Y2 Y-haplotype (appropriate for Texas Longhorn, unknown distribution)

WR 280

WR 280

UC Davis Conservation score 88.1% H14Y1 Y-haplotype (Hereford & Texas Longhorn)

WR 2935

WR 2935

WR 2936

For experimental use only. Grandsire JP-3 possessed Beefmaster genetics.

WR 3037

WR 3037

WR 317

US WR 340 "Mountain King"

Not yet tested

WR 3464

WR 3464

UC Davis Conservation score 95% H3Y1 Y-haplotype (Angus, Shorthorn & Texas Longhorn)

WR 3465

WR 3465

This bull was not tested. His sire WR 2935 scored 88.1% Conservation with an H14Y1 Y-haplotype.

WR 3622

WR 3622

This bull was not tested but his sire WR 2935 scored 88.1% Conservation with an H14Y1 Y-haplotype.

WR 3760

WR 3760

UC Davis Conservation score 91.3% H3Y1 Y-haplotype (Angus, Shorthorn & Texas Longhorn)

Yates 110/7 "The Brown Bull"

Yates 110/7 "The Brown Bull"

UC Davis Conservation score 91.8% H9Y3 Y-haplotype (Zebu & Texas Longhorn)

YO Guadalupe Chief 083/3

YO Guadalupe Chief 083/3

For experimental use only. UC Davis Conservation score 68.1% H18Y3 Y-haplotype (Zebu & Texas Longhorn)

YO Marquis 311

YO Marquis 311

YO Samson 239

UC Davis Conservation score 91% H19Y3 Y-haplotype (Zebu, Mexican Creole not previously observed in Texas Longhorn).

YO Texas Jack 596

YO Texas Jack 596

Not yet tested.

YO WR 3188

YO WR 3188

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