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The Farmer’s Guide to Ruminant Nutrition is your solution to take control of your production and profit! It is a six-step system to help you organise your feeding program to meet your economic goals by tailoring decisions to your specific environment and animals. When feeding the right thing, the right way at the right time, you will achieve better production results from your animals and make more profit with less effort and expense. We will help you, step by step, to develop your own simple, organised and profitable nutrition plan.


You will be able to:

Reduce costs

Increase production

Increase profit

Understand how to respond to sales talk

Make nutritional decisions from an ‘informed’ basis

Create a nutritional plan that is specific to your property and animals



Andrew Zerner LR


“It’s been brilliant working through the modules in the Farmer’s Guide to Nutrition at my own pace. I love being able to stop and start the recordings as I relate the information to my own situation via the spreadsheets included. I also love being able to go back and use this tool as a refresher as the seasons change throughout the year, and also from year to year. It gives me the added confidence that I’m feeding the right thing, in the right amounts, at the right time, for the right reason.”
Andrew Zerner, Murgon QLD




About Dr. Terry McCosker


Terry’s mission is to change agriculture in Australia. He has a vision for a ‘regenerative’ agricultural landscape, including, people, land, livestock and businesses.

Here is just a little of his background…

Dr. Terry McCosker, director of RCS, is an internationally acclaimed teacher and has worked in research, extension and property management in both government and private sectors since 1967.

In his research era, Terry published over 40 papers and made several world first discoveries in the 1980s in the fields of bull fertility, ruminant nutrition, animal production and pasture ecology.

Terry developed his passion for ruminant nutrition in the 1980s when he was tasked with improving the production on a cattle station in northern Australia, running 12,000 breeders on 310,000ha.

During this process he:

  • Developed the concept of nutritional seasons, which he has been since used hundreds of times to both diagnose and explain the nutritional requirements of ruminants.
  • Was the first to discover the north Australian wet season protein deficiency.
  • Released the first documentation relating individual species and ecological health to animal production in the world.
  • Published numerous nutritional papers.
  • Co-authored a book on phosphorus nutrition.

He has studied pasture development and animal nutrition in the US, Colombia, South Africa and Brazil. Terry developed the concept and managed the team which produced the first useful genetically modified rumen bacterium in the world. Among other things, he introduced the concept of Low Stress Stock Handling to Australia through Bud Williams, introduced and continued developing the acclaimed GrazingforProfit™ School and pioneered the soil carbon economy.

Terry has maintained his passion for ruminant nutrition and over 15 years ago he developed a face-to-face nutrition training program for teaching ruminant nutrition to farmers and graziers around Australia.


The Farmer’s Guide to Ruminant Nutrition is a culmination of Terry’s extensive experience into a simple six-step process you can follow along at home and implement to increase profitability and confidence in your nutritional decisions.