9 results for “Juan López”

Research ArticleOpen accessIn the author namesEvaluation of the Optimal Dose of Gibberellic Acid (Full Gib) in the Induction of Sprouting of Yungay Potato Variety Tuber (Solanum tuberosum L.)Wilfredo Ruiz Camacho, Danny Villegas-Rivas, José Manuel Palacios Sánchez et al.This research was carried out in the district of Luya, province of Chachapoyas, Amazonas, with the objective of evaluating the optimal dose of gibberellic acid (Full Gib) in the induction of sprouting of potato tubers (Solanum tuberosum L.) Yungay variety. A Completely Randomized Design (CRD) with two factors three replications and seven treatments was used. Minitat 17 statistical software, ANOVA, … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 24 Jul 2024 · 6,154 accessesView PDF Cite

Research NotesOpen accessIn the author namesOvarian Follicular Dynamics in Caqueteño Creole Cattle Breed at the Colombian Amazon PiedmontLópez-Rojas Robinson, Celis-Parra Gustavo, Tovar-Claros Gilberto et al.Caqueteño creole cattle breed is part of the eight Colombian creole cattle breeds. These breeds are characterized by having great adaptive potential to the environmental conditions in which they are found and allowing them greater productive efficiency. Caqueteño creole cattle is a breed in danger of extinction according to parameters referenced by FAO, since it is a population of cattle … …American Journal of Animal and Veterinary Sciences, Vol. 14, Issue 2 · 3 May 2019 · 8,511 accessesView PDF Cite

Research ArticleOpen accessIn the author namesUse of Quinolones in Bull Semen Extenders to Reduce Sperm Deoxyribonucleic Acid DamageClara Gonzalez-Marin, Michael Eduard Kjelland, Rosa Roy et al.Cryopreserved sperm samples from Holstein bulls (n = 20) were examined for bacterial presence and Sperm DNA Fragmentation (SDF) dynamics. SDF was assessed after thawing (T0) and at 4, 24 and 48 h of incubation (37°C) and the rate of SDF (r-SDF), as an estimator of the DNA degradation over time, was calculated. Two groups of bulls were identified based … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 4 · 29 Dec 2012 · 7,433 accessesView PDF Cite

Research ArticleOpen accessIn the author namesDetection of Chlamydophila abortus in Sheep (Ovis aries) in MexicoJuan Manuel Jiménez-Estrada, Marcos R. Escobedo-Guerra, Gabriel Arteaga-Troncoso et al.Chlamydophila abortus is one of the pathogens which induce abortion in small ruminants; this pathogen has a tropism for ruminant placenta and causes the disease commonly referred to as Ovine Enzootic Abortion (OEA). In Europe are estimated economic losses of around 20 million pounds a year by OEA. In the American Continent the disease has been reported only in Canada, … …American Journal of Animal and Veterinary Sciences, Vol. 3, Issue 4 · 31 Dec 2008 · 7,892 accessesView PDF Cite

Research ArticleOpen accessIn the author namesUltrastructural Evidences of Hepatitis B Infection in Human Liver Biopsies Disclose Complex Assembly and Morphogenesis Pathways for Hepatitis B VirusViviana Falcon, Ivon Menéndez, Nelson Acosta-Rivero et al.Despite of recent advances on acknowledge of hepatitis B virus (HBV) structure and biology, little is known about the morphogenesis and release of virions. In this study, the ultrastructural analysis of HBV components in liver biopsies from chronically HBV-infected patients disclosed complex assembly and morphogenesis pathways for HBV. HBV core (HBcAg) and surface (HBsAg) antigens were specifically identified in all … …American Journal of Infectious Diseases, Vol. 4, Issue 2 · 30 Jun 2008 · 7,094 accessesView PDF Cite

Research ArticleOpen accessIn the author namesEffect of Cassava (Manihot esculenta) Foliage Supplementation to Calves on the Viability and Egg Count of Haemonchus contortus NematodesJuan López, Esteban Machín, Arturo Zentella et al.Thirty early-weaned 5±3 month-old calves with an average body weight of 96±23 kg were used; 24 were artificially infested with 90 larvae (L3), of H. contortus per kilogram body weight. Calves grazed on African Star Grass (Cynodon plectostachyus) from 0600 to 1300 hours. Grazing was supplemented with lucerne hay (Medicago sativa) or cassava foliage (Manihot esculenta), and 500 g-1 head-1 … …American Journal of Animal and Veterinary Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,070 accessesView PDF Cite

Research ArticleOpen accessIn the author namesEvidences of Apoptosis in Hepatitis C Virus-Infected Hepatocytes and Peripheral Blood Monocuclear Cells in the Absence of Liver InjuryViviana Falcón, Nelson Acosta-Rivero, Mineko Shibayama et al.Understanding the mechanism of Hepatitis C Virus (HCV) pathogenesis is an important part of HCV research. In this study, the presence of apoptosis in HCV-infected liver and Peripheral Blood Mononuclear Cells (PBMC) from patients positive for anti-HCV antibodies and negative for serum HCV-RNA was investigated. The samples obtained from 21 patients were studied by in situ Hybridization (ISH), Immunofluorescence, TUNEL … …American Journal of Infectious Diseases, Vol. 1, Issue 1 · 31 Mar 2005 · 6,984 accessesView PDF Cite

Research ArticleOpen accessIn the author namesEvidences of Hepatitis C Virus Replication in Hepatocytes and Peripheral Blood Monocuclear Cells from Patients Negative for Viral RNA in SerumViviana Falcón, Nelson Acosta-Rivero, Mineko Shibayama et al.In this study, we examined the expression of hepatitis C virus (HCV) components in hepatocytes and peripheral blood mononuclear cells (PBMC) from patients positive for anti-HCV antibodies and negative for serum HCV-RNA. The samples obtained from 25 randomly selected patients (13 of 25 patients showed no histological evidences of chronic hepatitis and had normal serum ALAT and GGTP levels) were … …American Journal of Infectious Diseases, Vol. 1, Issue 1 · 31 Mar 2005 · 7,173 accessesView PDF Cite