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4. The effects of two nutritional environments from 6 weeks pre partum to 12 months of age on lifetime performance and reproductive potential of Scottish Blackface ewes in two adult environments;Gunn;Animal Production,1977
5. Mutations in the genes for oocyte-derived growth factors GDF9 BMP15 are associated with both increased ovulation rate and sterility in Cambridge and Belclare Sheep (Ovis aries);Hanrahan;Biology of Reproduction,2004