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Number and quality of oocytes in relation to age of cattle

, : Number and quality of oocytes in relation to age of cattle. Animal Reproduction Science 7(5): 451-460

Ovaries from 67 heifers aged 18-24 months, 75 cows aged 3-8 yr and 70 cows aged 9-17 yr were examined.

Accession: 001228035

DOI: 10.1016/0378-4320(84)90048-4

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Sovetkin, S.V.; Prokof' eva, E.S.; Makarova, I.E.; Romanenko, E.E., 1991: Semen quality in relation to in vitro fertilization of cattle oocytes. The fertilizing ability of semen of 32 bulls for in vitro fertilization and insemination of cows was compared. It was concluded that semen for in vitro fertilization should be from bulls which achieve a CR of at least 40% in inseminations of cows.

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