Welcome to Isa Beefmasters,
Home of Lasaters' L Bar Beefmasters

THE Performance Herd in the Beefmaster Breed!

We are the largest source of Beefmasters genetics in the world and serve customers around the globe.

Isa Cattle Company Pacesetter AwardWe are very proud to have had 93 L Bar cows receive the coveted BBU Pacesetter award. This means that she calved at least by 30 months of age, she had at least three consecutive calves with a weaning ratio of 105 or better AND maintained a calving interval of 375 days or less.

On the bull side, BBU publishes the trait leaders for each of the 5 EPDs, and there are 38 L Bar bulls or sons of L Bar bulls that are trait leaders in the Beefmaster breed. That is 38% of all trait leaders—for the entire breed—more than any other breeding establishment! We are also the proud producer of L Bar 5502, the only four-time leader in the Beefmaster breed, topping the charts in weaning weight, yearling weight, scrotal circumference and ribeye EPDs.

Isa Cattle Co 53rd Bull Sale

Thank you to all our customers who made our 53rd bull sale a success! Please read the post-sale press release here.


Introducing our Newest Herd Bull:
L Bar En Fuego

L Bar En FuegoAs the largest source of Beefmasters genetics in the world, Isa Beefmasters in San Angelo, Texas is proud to introduce our newest herd bull: L Bar En Fuego! Blending the L Bar 5502 and L Bar 7499 bloodlines, L Bar En Fuego (on Fire) is a top carcass bull with outstanding EPDs—and he's polled, too!

En Fuego has ideal conformation and is classified U 1/2. This is the bull you need! He's straight topped, perfectly muscled and clean underneath—he's got the look. Learn more about L Bar En Fuego.



Excellent Cattle For Sale Now

22 young Beefmaster bred heifers SOLD

19 Beefmaster bred heifers

2 Beefmaster herd bulls SOLD

Visit our Females For Sale or Bulls for Sale page for more details.


Females for Sale at Isa Beefmasters

Isa Beefmasters has exceptional demand for our L Bar females, and we sell select females private-treaty each year. The L Bar herd is unique in several ways. The cattle are run on leased pastures in a harsh semi-desert environment in West Texas and stay on a strict 60-day breeding season beginning at 13 months. Isa Beefmasters offers a nice selection of young pairs and a few older cows bred to one of our semen sires. Learn more about profitability being key to the success of Isa females.


Bulls for Sale at Isa Beefmasters

Every October, Isa Beefmasters hosts the largest bull sale in the Beefmaster breed. The sale is held the first Saturday each October, and it features approximately 150 L Bar Beefmaster bulls. These bulls represent the top 33% of bull calves weaned. You can buy the absolute best bulls we produce. Buyers arrive from across the U.S., Mexico, and South America to attend this truly international event. Learn more about Isa hosting the largest bull sale in the Beefmaster breed.

At Isa Beefmasters, we have exceptional demand for our L Bar genetics and we sell select bulls private-treaty each year. Visit our Bulls For Sale page for more details.

54th Bull Sale—October 3, 2015