Butterfly Bolus Buffer and Electrolyte Bolus in a nutshell:


Calzogol bolus - Calcium bolus (milk fever)

Cows with an optimal calcium supply start lactation better, are healthier and give more milk.

  • Very high content of fast and slow available calcium (45 g) and vitamin d3 (40.000 i.e.) per bolus!
  • Calcium sources with different release rates supply the cow with calcium evenly
  • Very well tolerated by mucous membranes - no irritation of mouth, esophagus and rumen
  • Without corrosive calcium chloride
  • Easy to use and economical - one bolus per administration is sufficient


Feeding recommendation:

Around calving time, give one bolus with the applicator as directed. If needed, enter a second bolus approximately 12 hours after birth. Dietary mineral feed for dairy cows to reduce the risk of milk fever.

Quality seal for feedstuffs from the Bavarian Farmers' Association.

Farms participating in the Open Barn Door program are only allowed to use feedstuffs bearing this seal. This ensures comprehensive feed safety for these farms! Agrochemica quality products are additionally gmp+ and qs certified.

Manufacturer "Kerbl"

Kerbl - tradition meets innovation in agriculture

Kerbl not only stands for decades of expertise in the field of animal accessories, but also for a deep connection to agriculture. As a global company, Kerbl offers an extensive range, ranging from agricultural products to equestrian and pet supplies through to stable, yard and electric fence supplies. With over 50 years of success in animal breeding and animal husbandry, Kerbl is constantly committed to improving the everyday lives of farmers, breeders and animal lovers through innovative solutions. Experience the world of Kerbl - where tradition and progress go hand in hand.

Country of origin: EU

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