Stress and Reproduction in Domestic Animals

Liptrap, R.M.

doi:10.1111/j.1749-6632.1993.tb49941.x

Cited by 78 publications

(48 citation statements)

References 97 publications

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“…Altered folliculogenesis, reduced ovulation rates, and follicular cyst development have been reported in association with adrenocorticotropic hormone (ACTH) administration and increased levels of glucocorticoids (Liptrap & McNally 1976, Liptrap 1993, Kawate et al 1996, Dobson et al 2000, Amweg et al 2013. In this sense, Kawate et al (2001) proposed stress as a potential mechanism for the development of bovine follicular cysts.…”

Section: Expression Of Gonadotropin Receptorsmentioning

confidence: 99%

Molecular aspects of bovine cystic ovarian disease pathogenesis

Ortega¹,

Marelli²,

Rey³

et al. 2015

Reproduction

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Cystic ovarian disease (COD) is one of the main causes of reproductive failure in cattle and causes severe economic loss to the dairy farm industry because it increases both days open in the post partum period and replacement rates due to infertility. This disease is the consequence of the failure of a mature follicle to ovulate at the time of ovulation in the estrous cycle. This review examines the evidence for the role of altered steroid and gonadotropin signaling systems and the proliferation/apoptosis balance in the ovary with cystic structures. This evidence suggests that changes in the expression of ovarian molecular components associated with these cellular mechanisms could play a fundamental role in the pathogenesis of COD. The evidence also shows that gonadotropin receptor expression in bovine cystic follicles is altered, which suggests that changes in the signaling system of gonadotropins could play a fundamental role in the pathogenesis of conditions characterized by altered ovulation, such as COD. Ovaries from animals with COD exhibit a disrupted steroid receptor pattern with modifications in the expression of coregulatory proteins. These changes in the pathways of endocrine action would trigger the changes in proliferation and apoptosis underlying the aberrant persistence of follicular cysts. Free Spanish abstract: A Spanish translation of this abstract is freely available at

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Section: Expression Of Gonadotropin Receptorsmentioning

confidence: 99%

Molecular aspects of bovine cystic ovarian disease pathogenesis

Ortega¹,

Marelli²,

Rey³

et al. 2015

Reproduction

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“…As a physiological mechanism, stress is not inherently negative (Moberg 2000). However, prolonged high concentrations of glucocorticoids might decrease individual fitness (Munck et al 1984) and reproductive success (Liptrap 1993), and also permanently alter behaviour.…”

Section: Introductionmentioning

confidence: 99%

Translocation stress and faecal glucocorticoid metabolite levels in free-ranging African savanna elephants

Viljoen

Ganswindt

Langbauer³

2008

South African Journal of Wildlife Research

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There are local populations of African elephants (Loxodonta africana) which have increased to levels where they are implicated in altering vegetation types. The local reduction of elephant numbers for wildlife management objectives can involve contraception, killing excess animals, or translocation to alternative habitats. The effects these management decisions can have on the physiological stress response of free-ranging African savanna elephants are still not fully understood. We examined the effect of translocation on faecal glucocorticoid metabolite levels of an African elephant family group, which was translocated within the Kruger National Park, South Africa. We found that translocation resulted in a significant increase in faecal glucocorticoid metabolite levels (up to 646 ng/g wet weight) compared to (1) pre-translocation levels in this group, (2) post-translocation levels in this group, and (3) levels measured in undisturbed 'control' groups in the area. However, the faecal glucocorticoid metabolite levels had returned to <100 ng/g by the time the translocated animals had navigated their way back to their previous home range, covering 300 km in 23 days.

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“…Severe and chronic stress may reduce individual ϐitness through immunosuppression and tissue atrophy (Munck et al 1984), also diminishes the animal's reproductive success (Liptrap 1993, Dobson & Smith 1995.…”

Section: Introductionmentioning

confidence: 99%

Comparison of two methods for glucocorticoid evaluation in maned wolves

et al. 2011

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Pesq. Vet. Bras. 31(Supl. Analysis of faecal glucocorticoid metabolites provides a powerful noninvasive tool for monitoring adrenocortical activity in wild animals. However, differences regarding the metabolism and excretion of these substances make a validation for each species and sex investigated obligatory. Although maned wolves (Chrysocyon brachyurus) are the biggest canids in South America, their behaviour and physiology are poorly known and they are at risk in the wild. Two methods for measuring glucocorticoid metabolites in maned wolves were validated: a radio-and an enzyme immunoassay. An ACTH challenge was used to demonstrate that changes in adrenal function are reϐlected in faecal glucocorticoid metabolites. Our results suggest that both methods enable a reliable assessment of stress hormones in maned wolves avoiding short-term rises in glucocorticoid concentrations due to handling and restraint. These methods can be used as a valuable tool in studies of stress and conservation in this wild species.INDEX TERMS: ACTH, corticosterone, cortisol, immunoassay, non-invasive monitoring, stress. foram validados: um radio-e um enzima-imuno-ensaio. Um desaϐio de ACTH foi usado para demonstrar que alterações no funcionamento adrenal podem ser detectadas nas concentrações metabólitos de glicocorticóides fecais. Nossos resultados sugerem que ambos os métodos possibilitam uma avaliação conϐiável dos hormônios relacionados ao estresse em lobos guarás, evitando assim aumentos de curta duração nas concentrações glicocorticóides, devidos ao manejo e contenção. Esses métodos podem ser usados como uma ferramenta valiosa em estudos de estresse e conservação com essa espécie silvestre.

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Stress and Reproduction in Domestic Animals

Cited by 78 publications

References 97 publications

Molecular aspects of bovine cystic ovarian disease pathogenesis

Molecular aspects of bovine cystic ovarian disease pathogenesis

Translocation stress and faecal glucocorticoid metabolite levels in free-ranging African savanna elephants

Comparison of two methods for glucocorticoid evaluation in maned wolves

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