We use different AI bulls each year in order to continually improve and evolve our genetic offerings.  Before our bull sale each spring, we collect a select few of our own high performing yearling bulls and use them heavily in our AI program.  All of our AI bulls are PAP tested in order to continue the progress of our high altitude program.  

We offer semen on many of our PAP Tested Bulls that we have collected over the years.  Be sure to inquire if you are interested in improving your high altitude genetics. 


The following is a list of our Herd Bulls that are currently in use for Natural Service.  We have collected a few of these bulls for AI use as well.       

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LJC Domain 402G

Domain is the most recent addition to our herd bull lineup.  He is a son of the famous 3SCC Domain A163, one of the most sought after bulls in the industry.  Domain 402G has an EPD profile that is hard to rival.  Top 1% ProS combined with Top 5% Gridmaster, this bull does it all.  He has the rare ability to combine elite level maternal trails with elite level carcass traits.  Top 1% Stayability, leading to highly profitable and productive female replacements.  Top 1% Marbling, his carcass traits are breed leading.  This bull is going to make an enormous impact on our herd.  Very low PAP of 37.


LSF SRR Night Calver 7371E

Night Calver brings serious carcass and growth traits to our herd.  Like Domain, he has an elite ProS EPD in the Top 2% of the entire breed.  That means serious profit for his calves.  Top 5% Gridmaster and Top 4% Ribeye, he really dials up the carcass quality for his offspring.  His Growth Traits are in the Top 10% of the breed.  He’s a bull we use heavily on cows in order to add profit, growth, and carcass qualities to our calves.  PAP 41.


LJC Triumph 038F

Triumph is one of our Heifer Bulls.  Unbelievable Calving Ease and Birthweight EPD’s, both in the Top 1% of the Breed.  Strong maternal traits with Stayability and Herdbuilder Traits in the Top 3% of the Breed.  We love the vigor of his calves, especially since many of those calves are born to first calf heifers.  He makes great replacements and has a very high degree of fertility, keeping our heifers on schedule.  We have been extremely happy with his performance.  Very low PAP of 36.


K2 Tell 50F

Tell is another Heifer Bull, produced by our friends at K2 Red Angus.  He also has elite Calving Ease and Birthweight EPD’s, both is the Top 2% of the Breed.  Awesome maternal traits with Herdbuilder in the Top 2% of the breed and Stayability in the Top 1%.  He combines strong maternal traits with a very high level ProS EPD in the Top 15% of the breed.  So, he adds serious profit to his maternally driven calves.  Tell is about as docile of a bull as you can find, with our kids being known to pet him in the pasture.  Low PAP of 39.


LSF SRR Redemption 6463D

Redemption has bred more of our cows than any other bull of ours in the last 4 years.  He is amazingly fertile and has left a serious impression on the herd.  A son of the very famous Brown Redemption Y1334, he brings some exceptional bloodlines to our cattle.  A very balanced set of EPD’s.  Calving Ease and Birthweight EPD’s in the Top 14% of the Breed.  ProS, Herdbuilder, Gridmaster, Marbling all in the Top 20% of the Breed.  He does so many things well.  His performance has been exceptional for us, which is why we use him for natural service and AI during breeding season.  Low PAP of 39.


LCJ Aviator 360D

Aviator has bred a lot of our cows since we purchased him.  He is a son of 5L Advantage 3267-221Y.  We purchased him because he brought a set of EPD’s that we thought would really compliment our other bulls.  We have not been disappointed.  His calves have performed vey well.  Herdbuilder, Maintenance, and Intake EPD’s in the Top 10% of the Breed.  We have used him on cows and heifers.  Very Low PAP of 36.


LSF SRR Altitude 6676D

Altitude is our largest framed bull.  He is all about carcass and growth.  He is a son of LSF Takeover 9943W with well known LSF, Beckton, and Brown bloodlines.  Top 5% Marbling and Gridmaster EPD’s combined with Triple Digit Yearling Weight and Top 20% ProS and Daily Gain.  He adds carcass, growth, and overall profit to his calves.  PAP 43.


LJC Nexus 108D

Nexus brings a very balanced set of EPD’s to the table.  He’s an outcross bull and was responsible for the 2 heaviest calves at our recent 2020 weaning day.  His EPD’s are not extreme in any one direction, just balanced across the board.  He’s a heavily muscled bull with lots of capacity and depth.  He’s sired a bunch of calves for us over the years and we continue to use him heavily in our program.  PAP 40.

Dan and Katie Reardon
970.729.2571
​​Dan@RockingRRedAngus.com