Browsing Artículos Científicos by Title
Now showing items 52-71 of 554
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Backfat thickness does affect the restoration of ovarian activita postpartum in different breeding programs in zebu cattle
(Frontiers in Veterinary Science, 2021-12-09)The backfat thickness (BFT) was used to forecast the onset of ovarian activity and predict the calf growth. Eighty Brahman cows with their calves were allocated in two groups of 40 distributed in 4 months according to ... -
Backyard Chicken Flocks Pose a Disease Risk for Neotropic Birds in Costa Rica
(American Association of Avian Pathologists, 2008)Pathogens of free-ranging chickens create a risk of disease for wild birds, some of which migrate to the United States, as well as potential economic losses for resource-poor farmers. Free-roaming backyard chickens are ... -
Bacterial counts in spleen
(Bio-protocol, 2013-11-05)Bacterial loads can be determined as colony forming units (CFU) at any point of the infection by culturing spleen homogenates on agar plates. This is a reliable method for comparing the kinetics of infection in various ... -
Bactericidal activity of Lys49 and Asp49 myotoxic phospholipases A2 from Bothrops asper snake venom Synthetic Lys49 myotoxin II-(115−129)-peptide identifies its bactericidal region
(FEBS, 1998)Mammalian group-II phospholipases A2 (PLA2) of inflammatory fluids display bactericidal properties, which are dependent on their enzymatic activity. This study shows that myotoxins II (Lys49) and III (Asp49), two group-II ... -
Bactericidal and Antiendotoxic Properties of Short Cationic Peptides Derived from a Snake Venom Lys49 Phospholipase A2
(American Society for Microbiology, 2005-04)The activities of short synthetic, nonhemolytic peptides derived from the C-terminal region of myotoxin 11, a catalytically inactive phospholipase A(2) homologue present in the venom of the snake Bothrops asper, have been ... -
Baylisascariasis como diagnóstico diferencial larva migrans en humanos, Costa Rica
(Universidad de Costa Rica, 2018-04-25)Baylisascariasis es una enfermedad causada por una animales, clasificada como una zoonosis emergente de importancia en salud pública. El agente causal es el nemátodo Baylisascaris procyonis, siendo su huésped definit de ... -
Baylisascaris procyonis Parasites in Raccoons, Costa Rica, 2014
(Centers for Disease Control and Prevention, 2016-08)To the Editor: Baylisascaris procyonis (Ascaridoi- dea: Ascarididae) parasites are facultatively heteroxenous nematodes that are widely distributed in the United States and Canada, where prevalence rates reach 70%–90%. ... -
Baylisascaris procyonis un nemátodo del mapache urbano, agente zoonótico emergente por considerar como diagnóstico diferencial de larva migrans en Costa Rica. Revisión.
(Universidad Nacional, Costa Rica, 2017-03-17)Resumen: El ascaridio Baylisascaris procyonis es un agente parasitario de importancia para la salud pública, siendo su huésped definitivo el mapache común (Procyon lotor). Un nuevo informe alerta sobre la presencia de ... -
Behavioral characteristics of Bos indicus cattle after a superovulatory treatment compared to cows synchronized for estrus
(Asian-Australasian Association of Animal Production Societies(AAAP), 2011-10)The intensity and duration of sexual behavior in Bos indicus was assessed through the continuous observation of sexual receptivity. Two groups of cows were formed: only synchronized (n = 50) and other group further ... -
Bienestar animal en investigación biomédica
(Universidad Nacional, Costa Rica, 2011-01)El bienestar animal es un tema controversial que ha tomado especial interés en los últimos años, a la vez, lo coloca en la mira de la investigación biomédica. El uso de animales es de gran provecho para el avance científico ... -
Biologic and genetic characteristics of Toxoplasma gondii isolates in free-range chickens from Costa Rica, Central America
(Elsevier B.V, 2006-02-23)The prevalence of Toxoplasma gondii in free-ranging chickens is a good indicator of the prevalence of T. gondii oocysts in the soil because chickens feed from the ground. The prevalence of T. gondii in 144 free-range ... -
Blood parameters of the Eastern Pacific green turtle (Chelonia mydas) foraging in the Golfo Dulce, Costa Rica
(Springer, 2021)The Eastern Pacifc green turtle (EPGT) has been diferentiating from the green turtle and is currently being considered a separate population. In this study, values for hematology and biochemistry of 85 green turtles ... -
Body distribution of Bothrops asper (terciopelo) snake venom myotoxin and its relationship to pathological changes
(Pergamon Press, 1987-10-23)E. Moreno and J. M. Gutiérrez. Body distribution of Bothrops asper (terciopelo) snake venom myotoxin and its relationship to pathological changes. Toxicon 26, 403 - 409, 1988. - The distribution of 125I-labelled Bothrops ... -
Boid inclusion body disease is also a disease of wild Boa Constrictors
(American Society for Microbiology, 2022-09-12)Reptarenaviruses cause boid inclusion body disease (BIBD), a poten- tially fatal disease, occurring in captive constrictor snakes boas and pythons worldwide. Classical BIBD, characterized by the formation of pathognomonic ... -
Bone lesions caused by pythium insidiosum in a horse
(Oxford University Press, 1987-10-02)A 5-year-old, female saddle horse developed a tumoral mass anterolaterally on the metacarpal region of its right front leg. Histopathological study showed hyaline, aseptate, broad hyphae in the sequestered coral-like ... -
Bovine Leukaemia‐virus infection in Costa Rica
(Blackwell Wissenschaft, 1995)The geographical distribution of bovine leukaemia‐virus (BLV)‐infected herds in Costa Rica and the isolation of BLV from cases of enzootic bovine leukosis are presented. It was found that BLV is prevalent throughout the ... -
Breeding soundness evaluation of extensively managed bulls in Costa Rica
(Elsevier, 1999-02-17)This paper describes the results of single breeding soundness evaluations (BSE) in 898 Bos indicus, Bos taurus and B. indicus x B. taurus bulls, 1 to 12 yr. old, extensively reared in different climatic regions of Costa ... -
Brown rats (Rattus norvegicus) in urban ecosystems: are the constraints related to fieldwork a limit to their study?
(Springer, 2018-07-05)Nowadays, the majority of human beings live in urban ecosystems, with this proportion expected to continue increasing in the future. With the growing importance of urban rat-associated issues (e.g. damages to urban ... -
Brucella abortus induces the premature death of human neutrophils through the action of Its lipopolysaccharide
(PLoS Pathogens, 2015-05-06)Most bacterial infections induce the activation of polymorphonuclear neutrophils (PMNs), enhance their microbicidal function, and promote the survival of these leukocytes for protracted periods of time. Brucella abortus ... -
Brucella abortus lipopolysaccharide in murine peritoneal macrophages acts as a down-regulator of T cell activation
(The American Association of Immunologists, Inc., 2000)Macrophages play a central role in host immune responses against pathogens by acting as both professional phagocytic cells and as fully competent APCs. We report here that the LPS from the facultative intracellular ...