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Vitamin E and Selenium for Reproduction of the Dairy Cow^{1, 2,}

Departments of Dairy and Veterinary Science Ohio Agricultural Research and Development Center The Ohio State University, Wooster 44691

ABSTRACT

Selenium injections and oral vitamin E supplementation prepartum were related to incidence of retained placenta, metritis, and cystic ovaries in a 2 x 2 factorial experiment. Groups were: 1) selenium and vitamin E, 2) vitamin E, 3) selenium, and 4) control. Incidence of retained placenta was 17.5% in cows of groups 2, 3, and 4, whereas it was reduced to 0% in cows receiving both selenium and vitamin E. Incidence of metritis was 60% for cows injected with selenium and 84% for those not receiving selenium. Cystic ovaries were diagnosed in 19% of cows injected with selenium, and incidence was 47% for cows not treated with selenium. Supplementation of vitamin E was required in addition to selenium for prevention of retained placenta of cows fed stored ensiled forage, and prepartum selenium injections were effective for reducing the incidence of metritis and cystic ovaries during the early postpartum period.

¹ Salaries and research support provided by State and Federal Funds appropriated to the Ohio Agricultural Research and Development Center, The Ohio State University, Journal Article No. 123–82.

² This research was supported by USDA Grant P. O. 89–106.

³ Department of Dairy Science.

⁴ Department of Veterinary Science.

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