Available only in Quebec & Maritimes. The Self-Locking Feeders work great for vaccinations, artificial insemination and ear-tagging, with the feeder wagon making catching cattle in the field easy. A centre work platform gives you easy access to the cattle's head and necks. Double inside bars save hay. Available only in Quebec & Maritimes. The Self-Locking Feeders work great for vaccinations, artificial insemination and ear-tagging, with the feeder wagon making catching cattle in the field easy. A centre work platform gives you easy access to the cattle's head and necks. Double inside bars save hay. Available only in Quebec & Maritimes. The Self-Locking Feeders work great for vaccinations, artificial insemination and ear-tagging, with the feeder wagon making catching cattle in the field easy. A centre work platform gives you easy access to the cattle's head and necks. Double inside bars save hay.