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Calsea is a highly effective rumen buffer, designed to increase productivity, feed efficiency, and bodyweight gains and is suitable for year-round use. Calsea improves rumen health and reduces instances of sub-acute ruminal acidosis (SARA).

Calsea works to stabilise rumen pH when cows have a feed in balance (high energy, low fibre spring grasses) or when changing diet (moving from crop to silage, silage to more grass etc.). Due to its microprill form, you’ll eliminate the mess and hassle of dust, and its molasses coating means it tastes great.

Scientifically-proven benefits (tested in European TMR systems):

  • Better efficiency due to improved digestibility by maintaining ruminal pH in 5.8-6.5 range
  • Highly available source of calcium (3x that of limestone/lime flour)
  • Stabilises rumen pH over a longer period of time (up to 8hrs)
  • Coated in molasses for great palatability
  • Micro prill form eliminates dust
  • Ensures rumen productivity and feed efficiency (up to 14%)
  • Increases milk yield (up to 8%)
  • Improves milk quality (up to 7% fat yield)
  • Enhances bodyweight gains (up to 1.6kg)
  • Regulates heat stress and protects against metabolic disease



Talk to your local Agvance Consultant

Calsea is a highly-effective rumen buffer and great source of calcium and magnesium. The secret is in Calsea’s unique honeycomb structure. Being more porous it has an increased surface area, which increases the bioavailability of minerals and nutrients. Made from calciferous marine algae, Calsea has been proven to stay in the rumen for longer and give buffering protection for up to 8 hours post-feeding, ensuring a stable rumen pH is maintained. It tastes great and its micro prill form means there is zero dust.

Balancing your feed can be tricky, but with Calsea you’ll improve digestibility and feed conversion rate, while introducing large amounts of highly-available calcium, which is also safe to feed to springer cows. Calsea also helps to reduce sub-acute ruminal acidosis (SARA), minimising laminitis (white line disease). All of this leads to increased milk yield and quality, better metabolic health, and increased feed efficiency.

Stabilise rumen pH and increase performance with premium mineral ingredients

Check your cows regularly

Checking your cow’s manure is an easy way to monitor their rumen efficiency. If it contains bits of undigested feed, you know that feed isn’t being broken down efficiently by the rumen. This not only means you’re wasting time and money, it can also signify your cow is suffering. 

By introducing Calsea in the feed, you’ll begin to see a reduction of undigested feed in your cows’ manure and an increase in milkfat percentage on the milk docket.

Why are rumen buffers so important?

The health and efficiency of the rumen directly impacts how well the cow performs through transition, calving, early lactation, and reproduction, as well as how resilient they are when faced with metabolic disease, hoof health, and heat stress.

When the rumen isn’t performing at its best, cows are at higher risk for metabolic disease, uterine infections, mastitis, lameness, reproductive issues, and even spontaneous abortion. 

Optimum rumen fermentation is a finely tuned process. Without enough energy in the diet, cows can experience decreased milk production and body condition. Too much energy will produce lactic acid and rumen pH levels will drop, resulting in an increased risk of subacute ruminal acidosis (SARA).

We can effectively manage the rumen by making sure our cows get a balanced feed, however, this is difficult to do. Firstly, feed balance is hard to get right while maintaining a tight feed budget and maximum milk production return. Secondly, pasture composition and quality are constantly changing with the weather. 

We can overcome these challenges by adding Calsea to the cows’ feed, buffering the rumen in order to keep it stable and functioning well.

Important note: Sugar and starch in ryegrasses

Modern, easily-digested ryegrasses have been modified to produce high levels of sugar and starch for high ME value. While these levels are good for pushing production, without enough fibre or an effective rumen buffer, these grasses will cause rumen pH to drop quickly during grazing and rumination.

Find out more by talking to your vet or the Agvance team today. Ready to reorder? Now you can re-order your products online too – it’s a fast and easy process. Just register, and get started.

Get in touch today for specific advice or to order:

Call 0800 BALANCE, contact your local Agvance consultant directly or login to your Agvance account.