Trials in sheep have confirmed an excellent sustained release profile, which ensures the iodine, selenium and cobalt levels are maintained throughout the active life of the bolus. Productivity benefits include optimised lambing percentages.
Users of 24•7 technology include George Fell of West Grange Farm, Thorganby, York George boluses all of his 400 pedigree Meatlinc ewes and another 400 commercial ewes at pre-tupping and again at lambing.
George comments ‘The pre-tupping bolus gives us confidence that our ewes aren’t being held back by any trace element shortfall – which translates as extra lambs per ewe. But having those extra lambs is irrelevant if that ewe can’t produce enough milk to sustain them – for me, the second bolus covers my sheep at a time when their reserves are under maximum draw.’
Roddy Lewis of Bronydd Farm, Clyro, Powys is another farmer who has seen the benefits of bolusing. ‘We’ve achieved a lambing percentage of 180% plus lamb vitality is excellent’ Roddy says ‘and out of the main flock of 225 ewes there has been only one barren and all in top condition’.