Our History ...

Thunder Ridge Dairy, Mount Vernon, Missouri is home to a 200-cow, 170-replacement heifer dairy including both registered Holsteins and Guernseys. The 500-acre farm is owned and operated by Marilyn Calvin and son, Kenlee Calvin with Luis Salas as herdsman. The herd has been on DHIA for over 40 years and is currently using PC-DART.
Bryce Ogle, Marilyn Calvin, Kenlee Calvin

With the help of Tim Ewing, all eligible heifers were enrolled in the EZ ID program beginning in 2016. The first heifer registered through this program, THUNDR-RIDGE MONTROSS 568, calved in October 2018. Since enrolling in the program, more than one hundred Holsteins have been registered. Plans are being made to begin classifying through Holstein Association USA.

In 2011, the Calvins began installing a rotational grazing system on 160 acres consisting of lanes, paddocks and waterers. They are continuing to renovate fields and paddocks to include novel endophyte fescues for better pasture and hay quality. Other crops include haylage and corn for silage.

Lani Ogle - Helps with breeding on the farm

Our Breeding ...

Cows and heifers are bred A.I with the help of granddaughter, Lani Ogle. All first calf heifers are mated through Select Sires' Select Mating Service with an emphasis on functional type traits.

Thunder Ridge uses an Intensive Grazing Management System

Roland Dtr
A 7HO8946 Roland Daughter
A sampling of one of the kind we breed.
Sire: Phil-RU Potter Roland-ET

Roland Dtr
Bred Heifers
Bred heifers registered through EZ ID program
including daughters of Mogul and Montross.

Roland Dtr
Crimson Clover
Field of Crimson Clover on Kenlee's Spring River farm.
It will be double-cropped with corn and has
caused quite a sensation in the neighborhood!

Industry Involvement ...

Marilyn has been active in the dairy industry for many years. She represents district 418 on DFA Southeast Council and was elected this year as the Ozarks Region chair. She also serves as vice-chair of Midwest Dairy Association Ozarks Division and Missouri Holstein Association youth committee. Kenlee is on the board of directors of Missouri Guernsey Breeders Association and a past participant in National Young Dairy Leaders. Lani is graduating this spring from Crowder College with an associates degree in animal science and will be attending Missouri State University this fall.

We enjoy visitors and showing the cattle!
Inquiries welcome on any animal.