In this episode of Angus from Scratch, Hannah breaks down the fundamentals of cattle reproduction in a way that’s simple, practical, and easy to understand.

The episode covers the key terminology every producer should know, walks through how follicles develop and why timing matters, and connects natural hormones to the drugs used in synchronization protocols. It also explain common synch protocols, the differences between artificial insemination and natural service, and how advanced tools like donor cows, embryo transfer, and IVF can accelerate genetic progress.

If reproduction has ever felt overwhelming, this episode is designed to help you understand how it all fits together so you can start making more confident breeding decisions in your own herd.

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Segments 

0:00 Introduction 

05:27 Important Reproduction Terminology 

21:44 The Estrous Cycle 

26:43 Hormones Involved In Reproduction 

34:42 Synchronization Protocols 

44:00 AI vs. Natural Service 

50:07 Donor Cows and Embryo Transfer 

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Resources

Reproduction Terminology: https://www.dropbox.com/scl/fi/1utc5i1ss9k9netmevbfu/Reproduction-Terminology-List.pdf?rlkey=0tg3b8at6i19rg59jsfqekbed&st=ooj4jfnb&dl=0

Hormone Chart: https://www.dropbox.com/scl/fi/xtjc1c0njcpf2qz8kn0x3/Hormones-Chart.pdf?rlkey=mpunnuczcxlqv5b4yy5fru8k7&st=skxh9fkk&dl=0

Follicular Cyclicity Diagram: https://www.dropbox.com/scl/fi/h5y65djvqr7mus7cut6z6/Reproductive-Cyclicity.pdf?rlkey=4toqc92rv8tp0a3j1odsl4wkn&st=1vbttnx2&dl=0

Follicular/Luteal Phase Diagram: https://www.dropbox.com/scl/fi/evj1qb8wsbstzl2tz027u/Follicular-Luteal-Phase-Diagram.pdf?rlkey=wms1rnu5ufhmj7zn3cfzr3x3w&st=2w1ob534&dl=0

Synchronization Protocols: https://beefrepro.org/protocols/

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