Physiological response of wild guanacos to capture for live shearing

2011 ◽  
Vol 38 (1) ◽  
pp. 61 ◽  
Author(s):  
P. D. Carmanchahi ◽  
R. Ovejero ◽  
C. Marull ◽  
G. C. López ◽  
N. Schroeder ◽  
...  
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Handling Time ◽  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Acute Response ◽  
Large Numbers ◽  
New Information ◽  
Cortisol Levels ◽  
Serum Cortisol Concentration

Context The use of wild guanacos (Lama guanicoe) through live capture and shearing may contribute to their conservation by providing an economic alternative to rural inhabitants. However, none of the biological impacts of this activity, including the physiological ones, have been addressed. Aims The aim of this work was to characterise the acute response of guanacos to stress after capture and shearing in terms of serum cortisol levels, heart rate, and body temperature. Methods The study was performed during 2006 and 2007 in La Payunia Reserve in western Argentina. In order to determine serum cortisol concentration, 128 blood samples were obtained and the unextracted sera were analysed by radioimmunoanalyses (RIA). Sex, age category, heart rate, body temperature and total restraint time (TRT) were also registered for each animal captured. Key results Serum cortisol levels were higher in guanacos captured and sheared during 2007 than in 2006, and male cortisol levels were consistently lower than female levels. No significant differences were observed in cortisol levels of the different age categories. A positive correlation was observed between TRT and serum cortisol concentration. The analyses of cortisol levels in relation to TRT showed differences between males and females. With handling periods longer than 80 minutes, females showed a delayed stabilisation in cortisol response when compared with males. Heart rate and body temperature showed no differences between year, sex or age categories. Conclusions The present results show that the stress response to capture and shearing in wild guanacos increased significantly with handling time. We recommend avoiding capture of large numbers of animals and keeping roundup duration short to reduce TRT. Implications This work provides new information that can improve guanaco welfare during handling and shearing and may have implications for the conservation of the species.

Effect of short transport during di-oestrus and pro-oestrus on cortisol levels and oestrous behaviour of sheep

2002 ◽  
Vol 138 (1) ◽  
pp. 93-96 ◽  
Author(s):  
AGUSTÍN ORIHUELA ◽  
HÉCTOR SÁNCHEZ-MEJORADA ◽  
MARTÍN TOLEDO
Keyword(s):  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Oestrous Cycle ◽  
Control Groups ◽  
Transport Stress ◽  
Cortisol Levels ◽  
Serum Cortisol Concentration

Two experiments were conducted to evaluate the effect of short transport stress on ewes during di-oestrus and pro-oestrus. In Experiment 1, intra-vaginal sponges containing fluorogestone acetate were inserted into ewes for a period of 12 days. A gonadotrophin (PMSG) injection was given at the time of sponge withdrawal to induce oestrous. To dissociate the possible effect of PMSG during pro-oestrus, a second experiment was designed in which prostaglandin was used as the oestrous induction factor. Ewes in both experiments were subjected to 30 min of transport by truck. In addition, oestrous behaviour and serum cortisol concentration were evaluated. Control groups consisted of un-transported ewes. In both experiments, cortisol concentration was greater (P <0·01) in transported than in un-transported animals. No difference (P> 0·05) was found between moving the ewes during pro-oestrous or di-oestrus (0·30±0·03 v. 0·53±0·18 ng/ml and 3·88±0·97 v. 2·94±0·73 ng/ml in Experiment 1 and 2 respectively). The number of ewes detected in oestrous was similar (P>0·05) among those stressed during di-oestrus, pro-oestrus or un-transported animals within each experiment (66, 47 and 42% respectively in Experiment 1 and 96·7 in all situations in Experiment 2). In general, higher cortisol concentration and more ewes displaying oestrous behaviour were detected in Experiment 2. It was concluded that under the conditions of these experiments, no difference was found in the proportion of ewes displaying oestrus regardless of the phase of the oestrous cycle in which they were transported.

Platelet Function in Surgical Stress

1985 ◽  
Vol 54 (04) ◽  
pp. 849-852 ◽  
Author(s):  
O Naesh ◽  
J T Friis ◽  
I Hindberg ◽  
K Winther
Keyword(s):  
Stress Response ◽  
Negative Correlation ◽  
Surgical Stress ◽  
Plasma Concentrations ◽  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Pulmonary Dysfunction ◽  
Arterial Po2 ◽  
Elective Cholecystectomy ◽  
Serum Cortisol Concentration

SummaryTen patients for elective cholecystectomy were studied pre-, per- and postoperatively. All had neurolept anesthesia. Plasma concentrations of β-TG, TXB2 and 5-HT and intraplatelet 5-HT were measured. Aggregation to ADP was recorded.Serum cortisol concentration was used as index of the stress response, showing peroperative increase and postoperative decrease. Closely related to this we observed a significant increase in P-β-TG and P-TXB2 with postoperative normalization in 6 patients without complications. P-5-HT had a peak peropera-tively and remained elevated postoperatively. A negative correlation between P--5-HT and decreasing intraplatelet 5-HT postoperatively was observed.High postoperative levels of P--5-HT seem to be related to low arterial Po2 and pulmonary dysfunction. In 3 patients with complications a second increase in P-β-TG, P-TXB2 and partly in P--5-HT was found. Platelets were temporarily refractory to ADP immediately following surgery and showed increased aggregabil-ity postoperatively. We conclude that platelets are activated in surgical stress.

Serum cortisol concentration in patients with major depression after treatment with clomipramine

2009 ◽  
Vol 61 (4) ◽  
pp. 604-611 ◽  
Author(s):  
Jadwiga Piwowarska ◽  
Małgorzata Wrzosek ◽  
Maria Radziwoń-Zaleska ◽  
Beata Ryszewska-Pokraśniewicz ◽  
Michał Skalski ◽  
...  
Keyword(s):  
Major Depression ◽  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Serum Cortisol Concentration

Stress level in wild harbour porpoises (Phocoena phocoena) during satellite tagging measured by respiration, heart rate and cortisol

2009 ◽  
Vol 89 (5) ◽  
pp. 885-892 ◽  
Author(s):  
I.G. Eskesen ◽  
J. Teilmann ◽  
B.M. Geertsen ◽  
G. Desportes ◽  
F. Riget ◽  
...  
Keyword(s):  
Heart Rate ◽  
Respiration Rate ◽  
Serum Cortisol ◽  
Phocoena Phocoena ◽  
Heart Rates ◽  
Stress Effects ◽  
Respiration Rates ◽  
Stressed Animal ◽  
Cortisol Levels ◽  
Satellite Tagging

During satellite tagging of harbour porpoises (Phocoena phocoena), heart rate, respiration rate and cortisol value were measured to evaluate stress effects during handling and tagging. Respiration rates were obtained using video recordings, heart rates were recorded and serum cortisol levels were analysed from blood samples. Differences in heart rates, respiration rates and cortisol levels before and during the tagging events were investigated. An overall significant decrease of 31.5% in respiration rate was found during the tagging event period, while mature porpoises respired significantly more often than immature individuals. Though significant differences in heart rates were found for some individuals, no general significant change for all animals was detected. We found no correlation between cortisol concentration and either heart rate or respiration rate, nor did we find any relationships between cortisol and month of year, sex and body length. As high individual variations occurred in response to tagging of harbour porpoises, it is not possible to give general advice based on the factors investigated, on how to reduce stress during handling. However, pouring water over the animal and lowering it into the water seem to stabilize a stressed animal. Therefore, general precaution and individual judgement based on experience is essential when handling wild harbour porpoises.

scholarly journals Performance and serum cortisol concentration in Santa Inês lambs under different suckling schemes

2016 ◽  
Vol 45 (9) ◽  
pp. 546-553
Author(s):  
Ana Carolina Alves ◽  
Nadja Gomes Alves ◽  
Ivan Júnior Ascari ◽  
Felipe Barbosa Junqueira ◽  
Luciana França Smith Maciel ◽  
...  
Keyword(s):  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Santa Inês ◽  
Serum Cortisol Concentration

Reproducibility of the cortisol response to stimulation with a low dose of ACTH(1–24): the effect of basal cortisol levels and comparison of low-dose with high-dose secretory dynamics

1993 ◽  
Vol 136 (1) ◽  
pp. 167-172 ◽  
Author(s):  
S. Crowley ◽  
P. C. Hindmarsh ◽  
J. W. Honour ◽  
C. G. D. Brook
Keyword(s):  
Cortisol Level ◽  
Low Dose ◽  
Standard Dose ◽  
Serum Cortisol ◽  
Cortisol Concentration ◽  
Acth Stimulation ◽  
Basal Cortisol ◽  
Basal Cortisol Level ◽  
Adrenal Response ◽  
Serum Cortisol Concentration

ABSTRACT We compared the reproducibility and repeatability of the acute adrenal response to low doses (90 and 500 ng/1·73 m2) of Synacthen (ACTH(1–24)) with that of the standard dose (250 μg/1·73 m2). We also examined the effect of basal cortisol levels on peak values achieved after stimulation with a low dose. ACTH(1–24) was given to six male volunteers: 90 ng/1·73 m2 twice at 90-min intervals on day 1, and 90 and 500 ng/1·73 m2 once on day 2 and 250 μg/1·73 m2 once on day 3. The rise in serum cortisol concentration with repeated low doses of ACTH was not attenuated (161 ± 49 (s.d.) nmol/l on initial vs 150 ± 41 nmol/l on repeat stimulation; P = 0·5) and this was reproducible (161 ± 49 nmol/l on day 1 vs 148 ± 15 nmol/l on day 2; P = 0·6). A dose of 500 ng ACTH(1–24)/1·73 m2 produced a maximal adrenal response in that the rise in serum cortisol concentration at 20 min was identical with that produced at the same time by the standard dose of 250 μg/1·73 m2. There was a strong positive correlation between the basal cortisol level and peak cortisol concentration after low-dose ACTH stimulation (r = 0·93, P < 0·001) but not between the basal cortisol level and the incremental rise (r= −0·1, P = 0·69). These results suggest that the cortisol response to low-dose ACTH stimulation is reproducible and not attenuated by repeat stimulation at 90-min intervals. The incremental rise in serum cortisol concentration after ACTH stimulation appears constant in these situations and is not influenced by the basal cortisol level. When there is concern that the standard dose may be excessive and mask subtle but important changes in adrenal function, the low dose (500 ng) of ACTH should be used. Journal of Endocrinology (1993) 136, 167–172

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