Serum luteinizing hormone, testosterone prolactin and corticol concentrations after PGF2α in the boar

Fonda, Edward S.; Diehl, John R.; Bard, C.; Riser, Terry E.; Kraeling, Robert R.; Rampeck, George B.

doi:10.1016/0090-6980(81)90162-3

Cited by 26 publications

(5 citation statements)

References 27 publications

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“…1983). In bulls, PGF 2 α seems to interact with the release of cortisol and testosterone, since Thun and Eggenberger (1996) recorded an increase of both cortisol and testosterone blood concentration in bulls after PGF 2 α injection and Fonda et al. (1981) reported that PGF 2 α administration in boars caused an elevation of both prolactin and cortisol concentration but failed to alter concentrations of LH and testosterone.…”

Section: Discussionmentioning

confidence: 99%

Effects of Mating on Plasma Concentrations of Testosterone, Cortisol, Oestrone Sulphate and 15‐Ketodihydro‐PGF2α in Stallions

Villani¹,

Cairoli²,

Kindahl³

et al. 2006

Reprod Domestic Animals

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Very little information is available regarding the physiological mechanisms involved in the normal sexual activity in the stallion and, in particular, the endocrine control of reproduction is still not clearly understood. This experiment was designed to determine the short-term effect of sexual stimulation on plasma concentrations of testosterone, cortisol, oestrone sulphate and 15-ketodihydro-PGF(2alpha) in stallions. Semen samples were collected from 10 lighthorse stallions of proven fertility using a Missouri model artificial vagina. At the same time, blood samples were collected from the jugular vein with heparinized tubes, 20 and 10 min before oestrous mare exposure, at exposure and 10, 20, 30 min after dismounting. Testosterone concentrations showed a sharp rise 10 min after mating (p < 0.001), reached a plateau, and then showed a further increase 30 min after mating (p < 0.001). Cortisol concentrations increased 10 min after mating (p < 0.001) and remained at high levels in the subsequent samples taken. A peak of oestrone sulphate was observed 10 min after mating (p < 0.001). 15-Ketodihydro-PGF(2alpha) concentrations decreased rapidly at the moment of the exposure of the stallions to an oestrous mare (p < 0.05), returned to pre-mating concentrations and then decreased again 30 min after mating (p < 0.05).

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Section: Discussionmentioning

confidence: 99%

Effects of Mating on Plasma Concentrations of Testosterone, Cortisol, Oestrone Sulphate and 15‐Ketodihydro‐PGF2α in Stallions

Villani¹,

Cairoli²,

Kindahl³

et al. 2006

Reprod Domestic Animals

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“…During the course of the experiment, three nonconfined gilts were removed due to various health problems. At approximately 185 d of age, five confined and five nonconfined gilts that had not exhibited estrus were cannulated nonsurgically via jugular vein puncture (Fonda et al, 1981). The confined gilts were placed in individual pens in the confinement building and the nonconfined gilts were placed in individual pens under a shelter in the outside lot.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Physiological Indicators of Chronic Stress in Confined and Nonconfined Gilts1

Rampacek

Kraeling

Fonda

et al. 1984

Journal of Animal Science

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Two experiments were conducted to determine if confinement-induced delayed puberty in gilts was due to chronic physiological stress imposed by confinement housing. In both experiments, crossbred gilts, raised in total confinement, were moved to an outside dirt lot (nonconfined) or to a single pen in a confinement finishing unit (confined) at 100 to 110 d of age. Beginning at 150 d of age, estrus was checked daily with a boar to determine age at first estrus. Gilts were necropsied at 270 d of age. In Exp. I, 19 confined and 19 nonconfined gilts were cannulated by jugular puncture at 185 d of age. The day after cannulation, blood samples were collected for 4 h, 200 IU porcine adrenocorticoptropic hormone (ACTH) was injected via the cannulae and blood samples were collected for an additional 8 h. Serum cortisol, progesterone, luteinizing hormone (LH) and prolactin (PRL) concentrations were determined. In Exp. II, both jugular veins of six confined and six nonconfined gilts were cannulated at 204 d of age. The day after cannulation, blood samples were collected for 4 h and cortisol was continuously infused for the last 2 h of the blood collection period. Cortisol metabolic clearance rate (MCR) and secretion rate (SR) were determined. By 270 d of age, 21 of 28 (75%) nonconfined gilts and 11 of 31 (35.5%) confined gilts (P less than .01) in Exp. I and 18 of 25 (72%) nonconfined gilts and 12 of 25 (48%) confined gilts (P less than .06) in Exp. II had exhibited estrus and ovulated.(ABSTRACT TRUNCATED AT 250 WORDS)

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“…(Weitzman et al 1971) and cow (Fulkerson et al 1980). In swine a circadian rhythm has been reported for both mature sows (Bate and Hacker 1985) and boars (Fonda et al 1981). (Franks 1967 Twenty-four-hour profiles for total and non-CBG cortisol are shown in Fig.…”

mentioning

confidence: 99%

Development of the Circadian Rhythm of Cortisol in the Gilt From Weaning Until Puberty

Evans¹,

Christopherson²,

Aherne³

1988

Can. J. Anim. Sci.

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Serum luteinizing hormone, testosterone prolactin and corticol concentrations after PGF2α in the boar

Cited by 26 publications

References 27 publications

Effects of Mating on Plasma Concentrations of Testosterone, Cortisol, Oestrone Sulphate and 15‐Ketodihydro‐PGF2α in Stallions

Effects of Mating on Plasma Concentrations of Testosterone, Cortisol, Oestrone Sulphate and 15‐Ketodihydro‐PGF2α in Stallions

Comparison of Physiological Indicators of Chronic Stress in Confined and Nonconfined Gilts1

Development of the Circadian Rhythm of Cortisol in the Gilt From Weaning Until Puberty

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