Eimeria infections in goats in Southern Portugal Infeções por Eimeria em caprinos do Sul de Portugal (original) (raw)
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Eimeria infections in goats in Southern Portugal
Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária
Coccidiosis caused by Eimeria species is a major form of intestinal infection affecting intensively and semi-intensively reared goats. The province of Alentejo is the main goat-producing area in Portugal. Therefore, all 15 Serpentina goat farms in Alentejo were analyzed regarding the occurrence and diversity of Eimeria species. Fecal samples obtained from 144 animals (52.1% dairy goats, 47.9% pre-pubertal goats) were examined using the modified McMaster technique to determine the number of oocysts per gram of feces. Eimeria spp. oocysts were present in 98.61% of the fecal samples and, overall, nine different Eimeria species were identified. The most prevalent species were E. ninakohlyakimovae (88%) and E. arloingi (85%), followed by E. alijevi (63%) and E. caprovina (63%). The average number of oocysts shed was significantly lower in dairy goats than in pre-adult animals. Astonishingly, no clinical signs of coccidiosis were observed in any of the animals examined, even though they were shedding high numbers of oocysts and were infected with highly pathogenic species. Thus, implementation of routine diagnostic investigation of the occurrence and diversity of caprine Eimeria species may be a useful tool for determination and better understanding of their potential economic impact on goat herds in southern Portugal.
Eimeria species in dairy goats in Brazil
Veterinary Parasitology, 2012
The focus of this work is to determine the distribution and identify species of Eimeria parasites of dairy goats in the livestock of the National Goat and Sheep Research Center in Sobral, State of Ceará, Northeast Brazil. Results showed the presence of multiple species in 196 of 215 analyzed samples (91.2%). Fifty five out of these were from kids (28%) and 141 from adult goats (72%). Eight different Eimeria species were identified and their prevalence in the herd was: Eimeria alijevi Musaev, 1970 (26.. Moreover, E. ninakohlyakimovae showed higher prevalence in kids (97%), followed by E. arloingi and E. alijevi (88%). On the other hand, E. alijevi (77%) was more common in adult goats followed by E. hirci (74%) and E. ninakohlyakimovae (70%). The species E. caprina had low frequency in both kids (27%) and adult goats (13%). Data indicated that infection was relatively common among kids and adult goats. The implementation of a routine diagnostic strategy can be useful in maintaining Eimeria populations under monitoring and will enable the determination of its potential impact on dairy goat herds in Northeast Brazil.
Management and Control of Eimeria Infection in Goats
Goat Science - Environment, Health and Economy [Working Title], 2021
Coccidian parasites of the genus Eimeira cause coccidiosis in farm animals, which develop in both the small and the large intestines. Coccidiosis is a major economic concern in many livestock, especially in young animals, as a result of losses caused by clinical infection (diarrhea) and subclinical (poor weight gain in particular) and the required treatment costs. Herein, we summarize geographical distribution of Eimeria parasites, their life cycle, pathogenesis, clinical signs, economic losses due to coccidiosis, diagnosis, recent information on control and prevention, and anticoccidial drugs for Eimeria infection in goats. With regard to poverty alleviation in most developing agricultural countries, it is important to maintain and develop goat-related industries. Proper management should be used to prevent losses and reduce the productivity from coccidiosis in young animals by: reducing the level of environmental contamination by infectious oocysts; minimizing stress; and avoiding...
Prevalence of Eimeria Oocysts in West African Dwarf goats at the University of Ibadan Farm
Nigerian Journal of Animal Production, 2021
An outbreak of acute coccidiosis is reported in West African Dwarf (WAD) goats kept under a semi intensive management system at the University of Ibadan farm. During the period of the outbreak, clinical signs observed among the animal included anorexia, fever, coughing, ocular and nasal discharges and diarrhoea. Sixty nine out of eighty-five (85%) animals were scouring, 6 out of 20 (30%) pregnant did abort, 8 out of 80 (10%) died through severe infection. Average oocyst counts was 2.73 x 10°/gram faeces in kids and 0.9 x 10 gram faeces in adult goats. Eimeria species predominant in goats and percentage occurrence were E. arloingi (77.5%), E. ninakohlyakimovae (62.89%), E. hirci (58.6%). E, alijevi (39.5%). Areas of glandular degeneration and necrosis of epithelium of the small intestine were seen. Also coccidia schizonts, immature oocysts, and neutrophilic infiltrations can be seen in the intestinal mucosa. The presence of pathogenic species of the Eimeria in WAD goats suggest that ...
Diagnosis of Eimeria spp. in Capra ibex (local meriz goat
Out of 77 of local meriz goats (Capra ibex), 29 (37.67%) were diagnosed as infected with coccidia. The infection percentage was 22.08% in kids less than six months of age as compared with older age (15.59%). A moderate diarrhea was the only clinical sign which was observed in three infected kids (3.9%). Six Eimeria (E.) species were diagnosed, they were E.alijevi, E.christenseni, E.caprovina, E.minasensis, E.megaembryonica, E.ninakohlyakimovae. E.megaembryonica was suggested to be a new species as it has a bigger embryonic mass which could be depended as a new parameter for coccidia classification. The germinal disk with two layers was very clear and observed in pre-sporulation Oocyst of most diagnosed species. The last three criteria are new in their mentioning. Also, Pot. Dichromate with 5% concentration is essential for follow-up of sporulation process to prevent of high bio-pollutants of fecal samples but without any effects upon biological features of isolated coccidia species.
2015
The aim of this study was to characterize the natural infection by Eimeria spp . in goat kids, and to describe some pathophysiological responses to eimerosis in kids under intensive rearing conditions in B.C.S, Mexico. Nineteen adult crossbred does naturally infected with mixed Eimeria spp . and 20 Anglo Nubian x Creole crossbred kids were used. Oocyst per gram of feces (OPG) and identification of Eimeria species were determined in does (during the pre-kidding and post-kidding periods) and kids. Clinical signs, hematocrit, hemoglobin and alkaline phosphatase activity in blood serum were evaluated. OPG (mean±SD) was significantly higher (P<0.05) in pre-kidding (9,478±7,599) than in post-kidding (5,313±2,909) period. Oocyst elimination in feces began at age 59±9 days in kids. Eimerian species identified were E. arloingi , E. jolchijevi , E. ninakohlyakimovae , E. hirci , E. christenseni and E. alijevi . Kids were humanely sacrificed to evaluate pathological lesions. Intestinal ...
Prevalence and risk factors of Eimeria spp. natural infection in sheep from northern Paraná, Brazil
Revista Brasileira de Parasitologia Veterinária, 2022
The present study aimed to perform an epidemiological and morphological identification of Eimeria infection in sheep in Brazil. Fecal samples from sheep were collected from 20 farms in northern Paraná, Brazil. An epidemiological questionnaire was used to evaluate the risk factors. Fecal samples containing oocysts per gram of feces (OoPG) ≥1000 were subjected to the modified Willis-Mollay method to perform oocyst identification. Sporulated oocysts were observed microscopically for morphological identification. A total of 807 fecal samples were collected. Based on the morphological characteristics of the sporulated oocysts, 10 species of Eimeria were identified, with main species observed: Eimeira ovinoidalis (98.1%), Eimeria crandallis (87.6%), Eimeria parva (79.1%), and Eimeria bakuensis (60.8%). Only 2.6% (7/268) of the sheep were infected with a single species, 4.8% (13/268) contained two different species, and 92.5% (248/268) were infected with three or more species. The analysis...