Stockfeed Protein Supplements for Cattle & Sheep in NSW & VIC

Stockfeed Supplements

Southern Protein Systems supplies liquid protein supplements that improve the nutritional value of existing livestock feed programs. By enhancing lower-cost hay and grain with targeted protein supplementation, producers can reduce feed costs while maintaining strong weight gain and animal performance.


Call 0447 713 303 for livestock feed solutions across NSW & VIC

Herd Of Cows Standing In A Fenced Pen On Dry Ground — Southern Protein Systems in Glenquarry, NSW

Built for modern Australian livestock production

The Smarter Way to Feed Livestock

Feed costs continue to rise, and relying on premium grain or high-quality hay alone is not always economically sustainable.


Southern Protein Systems provides a practical alternative, a liquid protein supplement that enhances the value of your existing feed, allowing you to achieve better results from lower-cost inputs.



Instead of paying more for better feed, you improve the feed you already have.

What We do

We supply a liquid stockfeed protein syrup designed for cattle and sheep feeding systems.


The product is:

  • Mixed directly into hay or grain rations
  • Applied at controlled inclusion rates
  • Consumed as part of the normal feeding program
  • Designed to improve protein intake efficiency



No specialised equipment is required. It integrates easily into existing farm feeding systems.


Cows Eating Hay In A Barn, Lined Up At A Feeding — Southern Protein Systems in Glenquarry, NSW
Cows Drinking From A Long Concrete Trough In A Dry Pasture — Southern Protein Systems in Glenquarry, NSW

How It Works

Livestock performance depends heavily on protein availability in the diet. Our system works by:


  • Taking a lower-cost base feed (hay or grain)
  • Adding a liquid protein supplement
  • Increasing the nutritional value of the ration
  • Improving feed efficiency & weight gain outcomes


This allows producers to maintain performance while reducing overall feed costs.

Why Producers Choose Southern Protein Systems

Farmers choose our system because it provides a more cost-effective approach to livestock feeding.


Key benefits include:


  • Reduced reliance on expensive grain & premium hay
  • Improved weight gain efficiency
  • Better use of lower-cost feed sources
  • Flexible feeding across seasonal conditions
  • Simple integration into existing feeding systems


It is not a replacement diet — it is a feed efficiency tool.

Cows Eating Hay In A Barn, Lined Up At A Feeding — Southern Protein Systems in Glenquarry, NSW
Cows Drinking From A Long Concrete Trough In A Dry Pasture — Southern Protein Systems in Glenquarry, NSW

Livestock Applications

Suitable for:


  • Beef cattle
  • Sheep production systems
  • General livestock feeding operations across NSW & VIC

Supply Options

We supply commercial-scale volumes suitable for farm operations of all sizes. Available options include: 


  • Bulk tanker delivery direct to farm
  • 1000L IBC container supply


We work directly with producers to ensure reliable, practical delivery solutions.

Cows Eating Hay In A Barn, Lined Up At A Feeding — Southern Protein Systems in Glenquarry, NSW
Cows Drinking From A Long Concrete Trough In A Dry Pasture — Southern Protein Systems in Glenquarry, NSW

Service Area

Southern Protein Systems supplies livestock producers across:


  • New South Wales
  • Victoria


We support agricultural operations across regional and rural Australia with consistent access to stockfeed protein supplementation.

Support & Advice

We provide clear guidance on application rates and usage to ensure the product is correctly matched to your feed program. Our goal is to help producers achieve consistent results and improved feed efficiency across different livestock classes and feeding conditions.


Improve feed efficiency. Reduce input costs. Maintain livestock performance. Call 0447 713 303 or contact us for bulk supply and feeding advice.

Cows Eating Hay In A Barn, Lined Up At A Feeding — Southern Protein Systems in Glenquarry, NSW

Our Products

Cows Feeding In A Barn, With Black and White Calves Lying On Straw — Southern Protein Systems in Glenquarry, NSW

Condensed Distillers Solubles (CDS)

High-energy liquid livestock nutrition designed to improve feed intake, support weight gain and enhance ration performance across commercial cattle, sheep and pig production systems.

DDGS / Dry Distillers Grain

Protein-rich distillers grain products providing practical energy and nutritional support for feedlots, dairies and livestock operations focused on feed efficiency and productivity outcomes.

Liquid Protein Supplements

Commercial liquid feed supplements developed to improve palatability, support livestock performance and deliver reliable nutrition solutions for modern feeding and ration management systems.

Cows Drinking From A Long Concrete Trough In A Dry Pasture — Southern Protein Systems in Glenquarry, NSW

Supporting Your Operations

We supply condensed distillers solubles (CDS), dry distillers grain (DDGS) and liquid protein supplements for a wide range of commercial livestock applications. Our products are used across feedlots, cattle operations, sheep production systems and piggeries to improve feed intake, support weight gain and help producers maximise ration performance.


CDS is widely valued for its palatability, conditioning benefits and strong protein profile, particularly as a cost-effective alternative to molasses in southern states. From bulk tanker deliveries to 1000L IBC supply options, we help producers access competitively priced, practical feeding solutions backed by reliable national freight coordination and ongoing supply continuity.


Contact us to find the right supply solution for your operation.

About Southern Protein Systems

Founded by Rodger Gaff, Southern Protein Systems was built around the growing need for reliable feed supply, practical logistics and performance-focused nutrition products within modern livestock operations. With strong agricultural industry experience and established supply relationships, we understand the operational pressures producers face and the importance of consistency across commercial feeding systems.


As an independent supplier, we focus on flexible, scalable supply solutions tailored to feedlots, graziers, dairies and agricultural partners. Our goal is simple — helping producers improve ration performance, maintain reliable supply continuity and support stronger long-term production outcomes.

Cows Eating Hay In A Barn, Lined Up At A Feeding — Southern Protein Systems in Glenquarry, NSW

Contact Southern Protein Systems

Talk to our supply team.