Reid Stockfeeds Camperdown

9 to 14 days after transitioning my sheep from a straight wheat to five star stockfeed ewe/lamb ration in a trail feed situation over 1050 of my ewes died. they were across 5500 acres on 4 farms. 3 months later again after transitioning from Johnsons lamb finisher pellets a week later my lambs started to die, again I immediately moved the sheep to a different paddock and fed oats. I saved the rest.All of Fivestar stockfeed tests say that there feed is fine and fit for purpose. I have had sheep die a week to 2 weeks after transitioning to there feed pellets on 5 occasions. Fivestar stock feeds have walked away from me and claim no responsibility. Has anyone had similar experiences?