Joaquín I. Armendano

ORCID: 0000-0002-0319-1127
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Research Areas
  • Toxoplasma gondii Research Studies
  • Animal Disease Management and Epidemiology
  • Viral gastroenteritis research and epidemiology
  • Parasitic Infections and Diagnostics
  • Reproductive Physiology in Livestock
  • Animal health and immunology
  • Animal Virus Infections Studies
  • Vector-Borne Animal Diseases
  • Viral Infections and Vectors
  • Microbial infections and disease research
  • Selenium in Biological Systems
  • Microscopic Colitis
  • Genetic and phenotypic traits in livestock
  • Clostridium difficile and Clostridium perfringens research
  • Antibiotic Resistance in Bacteria
  • Sex work and related issues
  • Plant Toxicity and Pharmacological Properties
  • Menopause: Health Impacts and Treatments
  • Gastrointestinal motility and disorders
  • Folate and B Vitamins Research
  • Veterinary Equine Medical Research
  • Enterobacteriaceae and Cronobacter Research
  • Cardiovascular Health and Risk Factors
  • Plant-derived Lignans Synthesis and Bioactivity
  • Health, Environment, Cognitive Aging

Universidad Nacional del Centro de la Provincia de Buenos Aires
2020-2023

National University of the West
2023

National University of Mar del Plata
2016-2019

National Agricultural Technology Institute
2017

The aim of this work was to identify causes abortion through laboratory investigations in sheep flocks Uruguay. One hundred cases abortion, comprising 58 fetuses, 36 fetuses with their placentas, and 6 placentas were investigated 2015-2021. Cases subjected gross microscopic pathologic examinations, microbiological serological testing for the identification including protozoal, bacterial, viral pathogens. An etiologic diagnosis determined 46 (46%) cases, 33 (33%) caused by infectious...

10.3389/fvets.2022.904786 article EN cc-by Frontiers in Veterinary Science 2022-05-19

To analyse group A rotavirus (RVA) environmental contamination in waters used for calves' consumption and to assess viral viability dairy farm water sources. We analysed 202 samples of RVA was detected by RT‐qPCR 35·1% (95% CI: 28·9–42·0%). marked pattern seasonality observed with higher frequency detection colder than warmer months (P = 0·002). There no association between load season or the number milking cows herd farm. The particles confirmed isolation cell culture from 5 10 samples....

10.1111/jam.13691 article EN Journal of Applied Microbiology 2018-01-10

After diagnosis of endemic abortions due to neosporosis in a commercial dairy farm, routes Neospora caninum-transmission were evaluated order determine the best strategy reduce its seroprevalence and related abortions. Precolostrum blood samples collected from 52 calves their dams. Additionally, 22 female also sampled at regular 3 month intervals until 18-22 months. N. caninum specific antibodies assayed by IFAT. Serum tested dilution 1:25 for before colostrum intake heifers mating 1:100...

10.3389/fvets.2019.00446 article EN cc-by Frontiers in Veterinary Science 2019-12-12

ABSTRACT: White muscle disease (WMD), nutritional myodegeneration or enzootic muscular dystrophy, is a condition associated with selenium and/or vitamin E deficiency in ruminants. These elements are constituents of the major body antioxidant systems. Depletion results oxidative damage to cardiac and skeletal cells, resulting myonecrosis, typical lesions WMD. Selenium common South America, but WMD underreported. This research describes clinical, biochemical pathological findings two episodes...

10.1590/0103-8478cr20170733 article EN cc-by-nc Ciência Rural 2018-05-19

Rotavirus A (RVA) causes diarrhea in calves and frequently possesses the G6 P[5]/P[11] genotypes, whereas G8 is less common. We aimed to compare RVA infections G/P genotypes beef dairy from major livestock regions of Argentina, elucidate evolutionary origin a strain analyze lineages, infer phylogenetic relationship field strains, investigate evolution spatio-temporal dynamics main lineages American countries. Fecal samples (n = 422) diarrheic (beef, 104; dairy, 137) non-diarrheic 78; 103)...

10.3390/v15102115 article EN cc-by Viruses 2023-10-19

Enterotoxemia caused by Clostridium perfringens type D is one of the most prevalent clostridial diseases sheep. The lesions acute form this disease, particularly cerebral lesions, are well characterized; however, detailed descriptions cardiac and pulmonary lacking. Here we describe cardiopulmonary in experimental enterotoxemia sheep determine role epsilon toxin (ETX) development these lesions. Four groups 6 were intraduodenally inoculated with either a wild-type C. strain; its etx knockout...

10.1177/0300985820965554 article EN Veterinary Pathology 2020-10-15

ABSTRACT: Caudal vena cava thrombosis (CVCT) is an acute disease secondary to ruminal lactic acidosis and rumenitis with fatal outcome in cattle fed a high-grain diet. The aim of this paper describe CVCT adult Holstein cow from herd Balcarce, Buenos Aires, Argentina. Clinical signs included dyspnea, weakness, recumbence, hemoptysis, followed by death 3.5 days. Important necropsy findings multiple hepatic abscesses, septic thrombus (4.0cm x 2.0cm) the adjacent liver, 15cm hematoma right lung....

10.1590/0103-8478cr20160917 article EN cc-by-nc Ciência Rural 2017-01-01

Rotavirus A (RVA) is amongst the most widespread causes of neonatal calf diarrhea. Because subclinical infections are common, diagnosis RVA-induced diarrhea cannot rely solely on molecular viral detection. However, RT-qPCR allows for quantification RVA shedding in feces, which can be correlated with clinical disease. Here, we determine an optimal cutoff rotaviral load quantified by to predict causality diarrheic neonate calves, using antigen-capture ELISA as reference test. Feces from 328 (...

10.3389/fvets.2022.952197 article EN cc-by Frontiers in Veterinary Science 2022-08-12

A pesar de su importancia, el diagnóstico etiológico del aborto en bovinos representa un desafío técnico para los veterinarios clínicos y laboratoristas, parte debido a la dificultad recuperar fetos abortados condiciones extensivas campo. Dicha limita posibilidad detectar tempranamente vientres efectuar investigación patológica microbiológica abortos. Neospora caninum es protozoario cosmopolita identificado como uno principales agentes abortigénicos bovinos. En este estudio proponemos una...

10.1016/j.ram.2019.06.004 article ES cc-by-nc-nd Revista Argentina de Microbiología 2019-11-28

Pascalia glauca is a native weed and one of the most common hepatotoxic plant affecting cattle in Argentina. Although experimental P. poisoning have been reported sheep, no spontaneous cases this species. This work describes an outbreak intoxication after consumption glauca, 20% (6/30) sheep commercial flock. Affected were ataxic, depressive, with mucous nasal discharge, cough abdominal breathing. During post mortem examination, liver was swollen diffuse enhancement reticular pattern...

10.24070/bjvp.1983-0246.v14i2p99-101 article EN Brazilian Journal of Veterinary Pathology 2021-07-29

Armendano, J.I.; González Chaves, S.; Uslenghi, G.; Cabodevila, J.; Callejas, S.S.: Efecto de la sal estradiol, estatus ovárico y condición corporal sobre el porcentaje preñez en vacas con cría IATF. Rev. vet. 26: 2, 108-112, 2015.

10.30972/vet.262218 article ES Revista Veterinaria 2016-04-01
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