In a sound breeding program, based on the long-term objectives of the owner/producer, a ewe breed is selected principally for reproductive traits, and a ram is selected from a breed known for production traits. There is a wide variety of ewe breeds, each with different reproductive capabilities, that have the potential to improve flock or band performance. Examples of reproductive traits include extended breeding season (Dorset, Polypay), early onset of puberty (Finnish Landrace, Polypay), increased ovulation rate (Finnish Landrace, Romanov), and environmental suitability (Scottish Blackface, Navajo Churro). Hormonal methods of manipulation of reproduction can be used to exploit a well-designed genetic pool, but should not be used as an alternative for poor breed selection and management.1-21

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