The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
E Papadopoulos - One of the best experts on this subject based on the ideXlab platform.
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Interactions between parasitic infections and reproductive efficiency in sheep.
Veterinary parasitology, 2014Co-Authors: G C Fthenakis, V S Mavrogianni, E Gallidis, E PapadopoulosAbstract:This review article summarises the many reports in the literature, confirming that, in sheep, parasitic infections can adversely affect reproductive efficiency; examples, which refer to all parts of the reproductive cycle of sheep, are as follows: trichostrongylosis in ewe-lambs (which can lead to delayed attainment of puberty), myiosis of the prepuce (which can cause impediment of mating), Chorioptic Mange or trypanosomosis in rams (which can lead to testicular degeneration or azoospermia, respectively), trypanosomosis or sarcoptic Mange in pre-conceptual ewes (which can lead to poor conception rates or reduced number of ovulations, respectively), toxoplasmosis or neosporosis in pregnant ewes (which are causes of abortion), trichostrongylosis or trematode infections in lactating ewes (which can cause reduction of milk yield and can be a risk factor for mastitis, respectively), cryptosporidiosis in newborn lambs (which can be a cause of deaths), coccidiosis in growing pre-weaned lambs (which can cause suboptimal growth rate). In other cases, the reproductive status of the animal can influence the parasitic infection; examples are as follows: the increase in faecal parasitic output during the peri-parturient period (as a consequence of the peri-parturient relaxation of immunity), the heavier trichostrongylid infections of twin lambs compared to lambs from single parities (as a consequence of developmental origin issues in twin lambs). All the above examples support the idea of presence of interactions between parasitic infections and reproductive efficiency in sheep.
Said Amer - One of the best experts on this subject based on the ideXlab platform.
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clinical and therapeutic studies on Mange in horses
Veterinary Parasitology, 2006Co-Authors: Salama A Osman, A Hanafy, Said AmerAbstract:At Kafr El-Sheikh province, Egypt, out of 117 examined drafting horses, mites were detected in 20 (17.09%) horses. The recovered mites were 14 Chorioptes, four Psoroptes and two Sarcoptes whereas mites were not detected in four cases clinically showed typical Mange lesions. Interestingly, neither the age nor the sex of the examined horses had a clear influence on the prevalence of the infection. Clinical signs observed in Mange infested horses were in the form of irregular skin lesions, severe itching and sometimes biting of affected skin areas and decrease feed consumption. The skin lesions mainly start as erythematous area followed by developing of papules and crust formation. Skin scratches as a result of traumatized lesions usually occurred. Hair was lost on the affected parts developing irregular alopecic areas. Distribution of the lesions was varied according to the type of mite. Chorioptic mite was detected in para-anal fold, distal portion of legs and tail lesions, Psoroptic mite was detected in withers, mane, shoulder and flank lesions whereas Sarcoptic mite was isolated mainly from lesions on the head and neck. Complete clinical and parasitological cure for mite infestation were obtained within 2 weeks in both moxidectin and ivermectin treated groups with 100% recovery rate. Our results indicated that moxidectin oral gel is effective and good alternative for the treatment of Chorioptic Mange in horse to avoid drug resistance that may develop as a result of the intensive use of ivermectin alone for long periods.
Aiden P Foster - One of the best experts on this subject based on the ideXlab platform.
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comparative study of the efficacy of eprinomectin versus ivermectin and field efficacy of eprinomectin only for the treatment of Chorioptic Mange in alpacas
Veterinary Parasitology, 2005Co-Authors: Gian Lorenzo Dalterio, Toby G Knowles, Anna Jackson, Aiden P FosterAbstract:Abstract The efficacy of eprinomectin versus ivermectin (Study 1: a single-centre, randomised, treatment-controlled, blinded field trial), and the field efficacy of eprinomectin (Study 2: a single-centre, open, un-controlled field trial) for the treatment of Chorioptic infestation in naturally infested alpacas were assessed in two studies. Thirty alpacas, all positive for Chorioptes sp. mite, were randomly allocated to two treatment groups in Study 1. Group A received a single topical administration of a 0.5% formulation of eprinomectin at the dose rate of 500 μg/kg. Group B received three subcutaneous administrations at 14 days interval of a 1% formulation of ivermectin at the dose rate of 400 μg/kg. Response to treatment was assessed by periodic mite count, and skin lesions scored. In Study 2, one group of 19 alpacas received four administrations at weekly interval of topical eprinomectin at the dose rate of 500 μg/kg, and response to treatment was monitored by mite counts. No localised or systemic side effects were observed in either trial. There was a statistically significant decrease in mite counts on day 7 (P
G C Fthenakis - One of the best experts on this subject based on the ideXlab platform.
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Interactions between parasitic infections and reproductive efficiency in sheep.
Veterinary parasitology, 2014Co-Authors: G C Fthenakis, V S Mavrogianni, E Gallidis, E PapadopoulosAbstract:This review article summarises the many reports in the literature, confirming that, in sheep, parasitic infections can adversely affect reproductive efficiency; examples, which refer to all parts of the reproductive cycle of sheep, are as follows: trichostrongylosis in ewe-lambs (which can lead to delayed attainment of puberty), myiosis of the prepuce (which can cause impediment of mating), Chorioptic Mange or trypanosomosis in rams (which can lead to testicular degeneration or azoospermia, respectively), trypanosomosis or sarcoptic Mange in pre-conceptual ewes (which can lead to poor conception rates or reduced number of ovulations, respectively), toxoplasmosis or neosporosis in pregnant ewes (which are causes of abortion), trichostrongylosis or trematode infections in lactating ewes (which can cause reduction of milk yield and can be a risk factor for mastitis, respectively), cryptosporidiosis in newborn lambs (which can be a cause of deaths), coccidiosis in growing pre-weaned lambs (which can cause suboptimal growth rate). In other cases, the reproductive status of the animal can influence the parasitic infection; examples are as follows: the increase in faecal parasitic output during the peri-parturient period (as a consequence of the peri-parturient relaxation of immunity), the heavier trichostrongylid infections of twin lambs compared to lambs from single parities (as a consequence of developmental origin issues in twin lambs). All the above examples support the idea of presence of interactions between parasitic infections and reproductive efficiency in sheep.
Richard Wall - One of the best experts on this subject based on the ideXlab platform.
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Mange in alpacas llamas and goats in the uk incidence and risk
Veterinary Parasitology, 2009Co-Authors: J Lusat, Eric R Morgan, Richard WallAbstract:A retrospective postal questionnaire was used to obtain information about the prevalence of Mange and its association with husbandry-related risk factors, in alpaca, llama and goat herds in the UK. In total 1797 questionnaires were sent out to members of the British Alpaca Society, the British Llama Society and the British Goat Society, giving response rates of 40.4%, 29.3% and 22.8% from the three groups, respectively. Between January and December 2007, Mange was reported in 52.2% (151 of 292), 14% (9 of 66) and 21% (41 of 194) alpaca, llama and goat herds, respectively. However, these figures must be treated with some caution as only 37–51% of the farmers had their diagnosis of Mange confirmed by a veterinarian or animal health laboratory. In herds where the causal agent was confirmed: psoroptic, sarcoptic, Chorioptic and mixed infections were all reported, with Chorioptic Mange reported most frequently. Risk analysis showed that the prevalence of reported cases Mange in alpacas was significantly associated with herd size and the country from which the animals were imported. Alpaca farmers who had larger herds were more likely to report Mange and farmers who imported their animals from Peru were 1.5 times more likely to report Mange than farmers who imported animals from elsewhere or who did not import. There was no significant confounding between these two risk factors. The results show that Mange continues to be a major problem for camelids and goats in the UK, and suggests that inadequate control on farms and lack of control when in quarantine are two factors that contribute to ongoing problems with Mange. However, given the relatively low contribution of imported animals to the national herd each year, it is likely that poor on-farm control may be of greatest importance.