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Catherina Cunnane
Catherina Cunnane
Catherina Cunnane hails from a sixth-generation drystock and specialised pedigree suckler enterprise in Co. Mayo. She currently holds the positions of editor and general manager at That's Farming, having joined the firm during its start-up phase in 2015.
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New slow-release bolus to ‘tackle’ Vitamin E shortfall

Animal health business, Agrimin, has developed a new bolus that will provide “all key” nutrients cattle need and help farmers overcome the challenges they face in maximising the potential of dairy and beef herds.

Its latest product release comes in response to its efforts to help farmers tackle the “hidden” issue of a “significant” shortfall of Vitamin E in UK cattle.

Research shows that 75% of dairy cows have a shortfall of Vitamin E at some point of the production cycle.

The research also highlights that in addition to the shortfall of Vitamin E – which rises to as much as 97% in very early lactation dairy cows – 89% of UK grazed grass is deficient in selenium.

Both are “crucial” antioxidants that are “critical” for cattle health in periods of stress.

Research shows that cows rarely get up to the recommended levels, meaning both the cow and the calf are not fulfilling their maximum potential.

Callum Harvey, technical manager at Agrimin, stated that “it can take 100 days for cows to restore Vitamin E levels following pregnancy”.

“That means they are not fully recovered and operating at their full potential”.


Agrimin has developed a new slow-release bolus range that helps cattle reach their full potential.

The ESey BREEDER and ESey FINISHER boluses provide dairy cows and beef cattle with the recommended levels of vitamin E and selenium they need in periods of stress, such as transition and calving.

According to the company, they supply the animal’s full daily requirement of each for approximately 60 days.

For dairy cows, the ESey BREEDER bolus aids in a quicker recovery after calving, boosting milk production, colostrum quality, and productivity.

Meanwhile, the ESey FINISHER bolus offers similar benefits to finishing beef cattle, optimising daily liveweight gain to hit target weights quicker and helping meat quality and redness.

The ESey range is a new antioxidant bolus that is designed to support cattle during the transition period when the cow is under stress and when vitamin E levels fall at calving.

According to the company, it contains a combination of vitamin E, selenium and grape extract and is intended for adult cattle on grass or forage-based diets with a liveweight of over 400 kg.

Harvey comments 

Harvey commented: “Antioxidants protect cells from oxidative stress, which is key during recovery in periods of stress, which can include hot weather, changes in the diet and calving.”

“The antioxidants in the bolus optimise the immune system in cattle and colostrum quality, accelerating calf development and reducing the incidence of scour. They also optimise liveweight gain and meat quality.”

The bolus can be used at any time of year but is designed for periods of stress, including transition, pre-calving, at calving or periods of heat stress too, the company added.

Half of all antioxidant activity comes from Vitamin E, and the grape extract in the bolus multiplies the effect of Vitamin E, ensuring the bolus delivers everything the cow needs.

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