Seasonally polyoestrous - Have many oestrus cycles during a set time of year., Flushing - Moving ewes from a low plane of nutrition to a high plane of nutrition prior to mating., Steaming up - Moving ewes from a low plane of nutrition to a high plane of nutrition prior to lambing., Terminal Sire - A ram that is used to produce offspring with high growth rates, good conformation, and good carcass quality for slaughter. Suffolk or Texel, Hogget - A sheep between 1 and 2 yrs old, Cast / Draft Ewe - A ewe who fertility has declined due to harsh conditions on the mountains, sold to lowland farmers and put on improved plane of nutrition which allows her to continue to produce lambs for a number of years., Polled - No Horns, Double Muscled - Carry a mutation ( myostatin gene ) that results in greater muscle growth- notably around hind quarters, Proliferacy - Number of lambs produced in a single litter., Hybrid Vigor - Best genetic characteristics of both parents, Conformation - The shape of an animal and the distribution of weight & muscle around its body,

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