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Feedlot performance of steers and bulls actively immunized against gonadotropin-releasing hormone.
Feedlot performance and testicular and pituitary function were assessed in cattle actively immunized against GnRH. In Trial 1, 50 steers were either unimmunized (n = 10), actively immunized againstExpand
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Testis function and feedlot performance of bulls actively immunized against gonadotropin-releasing hormone: effect of implants containing progesterone and estradiol benzoate.
The effect of implants containing anabolic steroid (Synovex) on testis function, feedlot performance, and carcass traits was evaluated in bulls, steers, and bulls actively immunized againstExpand
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Testes function and feedlot performance of bulls actively immunized against gonadotropin-releasing hormone: effect of age at immunization.
Testes function, feedlot performance, and carcass traits were evaluated in bulls actively immunized against gonadotropin-releasing hormone (GnRH) at different ages. Bull calves were randomly assignedExpand
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Effect of duration of infusion of stress-like concentrations of cortisol on follicular development and the preovulatory surge of LH in sheep.
Stress-like levels of cortisol suppress follicular growth and development and block or delay the preovulatory surge of LH when cortisol is continuously administered during the late luteal and earlyExpand
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Reproductive function and feedlot performance of beef heifers actively immunized against GnRH1.
Two trials were conducted to examine reproductive function and feedlot performance by heifers after active immunization against GnRH. In trial 1, heifers were not immunized or were immunized with oneExpand
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Moderate and severe nutrient restriction has divergent effects on gonadotroph function in orchidectomized sheep.
The effect of plane of nutrition and estradiol (E2) on pituitary concentrations of GnRH receptor and GnRH receptor mRNA was assessed in orchidectomized sheep (wethers). As detailed in the companionExpand
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Effect of stress-like concentrations of cortisol on estradiol-dependent expression of gonadotropin-releasing hormone receptor in orchidectomized sheep.
The effect of stress-like concentrations of cortisol (C) on estrogen-dependent expression of GnRH receptor was evaluated using orchidectomized sheep (wethers; n = 6 animals per group). C (5.0 mg/50Expand
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Effect of stress-like concentrations of cortisol on gonadotroph function in orchidectomized sheep.
The effect of stress-like concentrations of cortisol (C) on the feedback potency of estradiol (E2) was assessed using 32 orchidectomized sheep (wethers) assigned at random to 1 of 4 treatment groupsExpand
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Gonadotrophin secretion during the periovulatory period in Galway and Finnish Landrace ewes and Finnish Landrace ewes selected for high ovulation rate.
Rates of ovulation differed significantly (P less than 0.01) among ewes of the different genetic lines. However, of the reproductive characteristics studied, only progesterone concentration at theExpand
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Effect of stress-like concentrations of cortisol on the feedback potency of oestradiol in orchidectomized sheep.
The effect of stress-like concentrations of cortisol on oestradiol-induced change in LH secretion and GnRH receptor expression was evaluated in orchidectomized sheep (wethers). Twenty-four wethersExpand
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