title: Effect of dietary selenium supplementation on the plasma progesterone concentration in cows.
abstract: ABSTRACT. The effect of selenium (Se) supplementation to the diet on the plasma progesterone concentration was investigated in non-lactating and non-pregnant cows. Italian ryegrass wafers and concentrates, with or without 0.5 ppm of Se, were fed to cows at a maintenance level. The plasma Se concentrations in the each treatment were 0.047 ppm (-Se) and 0.081 ppm (+Se), respectively. Se supplementation did not affect the length of the estrous cycle, but it did increase the concentration of plasma progesterone in the estrous cycle (P<0.001). These results suggest the possibility that Se contributes to the progesterone production of corpus luteum.
authors.affiliation: National Institute of Animal Industry, Tsukuba Norindanchi, Ibaraki, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kamada
authors.forename: K
authors.initials: K
authors.lastname: Hodate
mesh_terms: D000704:Analysis of Variance; D000821:Animal Feed; D000818:Animals; D002417:Cattle; D004971:Estrus / Q000187:drug effects; D005260:Female; D005527:Food, Fortified; D006109:Poaceae; D011374:Progesterone / Q000097:blood*; D012643:Selenium / Q000008:administration & dosage / Q000097:blood / Q000494:pharmacology*
chemical_list: D011374:Progesterone; D012643:Selenium