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COB-I-SEL Micro Bolus

A slow release 25-day cobalt supplement for finishing lambs that also delivers iodine, selenium and multi-vitamins. Cob-I-Sel is available with or without added copper

COB-I-SEL 25 has been developed specifically to help maintain optimum cobalt levels in rapidly growing lambs finishing at grass and produce quality carcasses at finish. Its formulation also makes it ideal for targeted use during the ewe’s production cycle, such as at pretupping or around lambing.

  • The majority of UK grazing is cobalt deficient, particularly if it has been improved with practices such as liming
  • Cobalt is required for rumen synthesis of vitamin B12 and vitamin B12 is required for energy production
  • There is very little storage capacity in the body for cobalt and Vitamin B12, so the animal relies on a daily intake from feed, forage or grazing
  • If forage or grazing is lacking in cobalt, animals become cobalt deficient very quickly, and may suffer from the resulting condition known as pine
  • Pine will cause poor growth and wool quality in lambs resulting in small lambs with poor body condition. These lambs will take far longer to finish resulting in significantly increased days to slaughter and inferior carcass quality

Contains: Cobalt, iodine, selenium, multi vitamins and (copper)
Size available: 1 x 250 micro boluses with copper (Code 5453)

1 x 250 micro boluses without copper (Code 5782)  

Application: Lambs 1 x micro bolus. Ewes 2 x micro bolus

Administer from five weeks of age


COB-I-SEL Micro Bolus balling gun

A specially designed balling gun for the administration of Cob-I-Sel.
COB-I-SEL Gun (Code 5485)



Features Advantages Benefits
1g Micro Bolus Allows administration from 5-6 weeks of age Helps reduce the period of time an animal may be deficient for.
25 day release Only supplying cobalt for the required duration in slaughter lambs Cost effective supplementation period
Cobalt Readily available supply of cobalt to help ensure sufficient B12 production Help support lamb health and minimised days to finishing
Selenium Supplements dietary demands due to geographic or induced deficiencies Help support carcass quality
Vitamin B12 Essential for energy metabolism Helps positively influence feed efficiency
Iodine Help maintain wool quality Supports lamb health


Features Advantages Benefits
Cobalt & Selenium

Supports health egg production and healthy foetal development

Supports high colostral Vit E levels

Helps support lamb survival

Helps support immune response

Vitamin B12 Aids carbohydrate metabolism Helps support healthy ewe condition at tupping
Vitamin E Helps prepares the ewe for pregnancy Helps support maximum opportunity for successful pregnancy