1977
DOI: 10.2527/jas1977.453635x
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Testosterone Concentrations in Tissue from Veal Calves, Bulls and Heifers and Milk-Samples

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Cited by 44 publications
(15 citation statements)
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“…The highest levels of testosterone in the cyclic cow and ewe are during the luteal phase and just before CL regression Hoffman & Rattenberger, 1977;Herriman, Harwood, Mallinson & Heitzman, 1979). We found differences for the release of testosterone on Days -8 to -4 and Days -13 to -9: the significant increases in spikes of testosterone release before CL regression concur with the increases noted by in peripheral testosterone levels during the oestrous cycle.…”
Section: Discussionsupporting
confidence: 68%
“…The highest levels of testosterone in the cyclic cow and ewe are during the luteal phase and just before CL regression Hoffman & Rattenberger, 1977;Herriman, Harwood, Mallinson & Heitzman, 1979). We found differences for the release of testosterone on Days -8 to -4 and Days -13 to -9: the significant increases in spikes of testosterone release before CL regression concur with the increases noted by in peripheral testosterone levels during the oestrous cycle.…”
Section: Discussionsupporting
confidence: 68%
“…Most studies of the hormonal content of milk have focused on progesterone but there are some reports about androgens. The reported testosterone concentration in milk ranges from 0.02 to 0.15 g/L, 1,25,26 whereas that of androstenedione ranges from 0.1 to 3.5 g/L 1,26 depending on the state of pregnancy of the cow. How processing affects the levels of these hormones is not well understood, but additional testosterone production from precursors like androstenedione and estrone occurs in dairy products like cheese during the fermentation phase.…”
Section: Discussionmentioning
confidence: 98%
“…The progesterone levels are similar to those reported by Allaire et al (1981), but the estradiol levels are lower. Among the few studies which deal with steroids in prepubertal heifers, there is one report on testosterone: a concentration of 60 pg ml--t was noted in 85-d-old veal calves (Hoffmann and Rattenberger 1977).…”
Section: Methodsmentioning
confidence: 99%