The periparturient relaxation of immunity in Merino ewes infected with Trichostrongylus colubriformis: Parasitological and immunological responses

Beasley, Anne; Kahn, Lewis; Windon, R.G.

doi:10.1016/j.vetpar.2009.08.028

Cited by 64 publications

(59 citation statements)

References 31 publications

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Section: Haemonchus Contortus Antigensupporting

confidence: 86%

“…These same results were observed in the study by Beasley et al (2010) with under or overfed ewes, with total plasma Ab showing low titres in pregnant ewes regardless of the diet. The rapid recovery of systemic total Ab following early weaning suggests an important role in the modulation of the EPG count around parturient rise (Beasley et al, 2010). After the challenge of a nematode infection, hair-ewes had numerous and rapid humoral immune responses, including the ability to reduce the number of EPG and maintain significantly high titres of circulating specifi c IgA (Bowdridge et al, 2013).…”

Section: Haemonchus Contortus Antigensupporting

confidence: 86%

“…Consequently, nutrition is the main strategy for developing mature immunity during late pregnancy and lactation against parasitic infections (Beasley et al, 2010). The weight change supports the theory that the peri-parturient relaxation in immunity is probably linked to the increasing needs of energy and protein for foetal growth and hormonal changes (Mahieu and Amount, 2007).…”

Section: Haemonchus Contortus Antigensupporting

confidence: 60%

“…Plasma IgA titres in early weaned ewes increased, becoming significantly higher to those measured in suckled ewes (Beasley et al, 2010). In pregnant sheep, the high concentration of IgA in sera samples in middle lactation may be more refl ective of recovery from infection (Bowdridge et al, 2013), as shown in Figure 3.…”

Section: Haemonchus Contortus Antigenmentioning

confidence: 96%

“…In order to conduct selection of resistant ewes, physiological aspects such as lactation and gestation shoul be evaluated because they can affect the development of the host immune system against GIN (Beasley et al, 2010). The aim of the present study was to determine the infl uence of physiological stage in the variability of parasitological, haematological and immunological parameters of Blackbelly ewes naturally infected with gastrointestinal nematodes in tropical conditions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Immune and haematological parameters of Blackbelly ewes infected with gastrointestinal nematodes

González-Gardúño

Arellano

Felipe

et al. 2017

Rev Colomb Cienc Pecu

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Section: Haemonchus Contortus Antigensupporting

confidence: 86%

Section: Haemonchus Contortus Antigensupporting

confidence: 86%

Section: Haemonchus Contortus Antigensupporting

confidence: 60%

Section: Haemonchus Contortus Antigenmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Immune and haematological parameters of Blackbelly ewes infected with gastrointestinal nematodes

González-Gardúño

Arellano

Felipe

et al. 2017

Rev Colomb Cienc Pecu

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Effect of Parasitic Infection on Reproductive Health

Das,

Suthar,

Prajapati

et al. 2024

Elements of Reproduction and Reproductive Diseases of Goats

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The relative effects of reproductive condition, stress, and seasonality on patterns of parasitism in wild female black howler monkeys (Alouatta pigra)

Martínez-Mota

Garber

Palme

et al. 2017

American J Primatol

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Parasitic infections in wildlife are shaped by host-related traits including individual reproductive condition. It has been argued that female primates are more susceptible to infectious diseases during pregnancy due to short-term changes in immune function that result in reduced ability to combat infections. Likewise, lactation, which is the most energetically expensive state, may affect immunity and infection risk due to tradeoffs between milk production and maintenance of immune function. Here, we examine the degree to which parasite prevalence and parasite richness are affected by female reproductive condition and stress levels in wild female black howler monkeys (Alouatta pigra). Over the course of one year, we collected fresh fecal samples from 15 adult females belonging to seven black howler groups living in Escárcega, Mexico. Fecal samples were used for parasitological analysis and for measuring fecal glucocorticoid metabolites (i.e., stress biomarker). We found that the prevalence of intestinal parasites and parasite richness did not differ among non-pregnant, pregnant, and lactating females. Fecal glucocorticoid metabolite levels increased significantly during pregnancy and during the first month of lactation, and positively predicted the probability of Controrchis biliophilus infection. Parasite prevalence and richness decreased during the months of increased rainfall. We conclude that reproductive physiology has limited consequences on intestinal parasitic infection risk in female black howler monkeys and that seasonal environmental fluctuations have greater effects.

show abstract

The periparturient relaxation of immunity in Merino ewes infected with Trichostrongylus colubriformis: Parasitological and immunological responses

Cited by 64 publications

References 31 publications

Immune and haematological parameters of Blackbelly ewes infected with gastrointestinal nematodes

Immune and haematological parameters of Blackbelly ewes infected with gastrointestinal nematodes

Effect of Parasitic Infection on Reproductive Health

The relative effects of reproductive condition, stress, and seasonality on patterns of parasitism in wild female black howler monkeys (Alouatta pigra)

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