A5014849394- Agricultural and Food Production Studies
- Wildlife Ecology and Conservation
- Reproductive Physiology in Livestock
- Rabbits: Nutrition, Reproduction, Health
- Meat and Animal Product Quality
- Ruminant Nutrition and Digestive Physiology
- Animal Behavior and Welfare Studies
- Pharmacological Effects and Assays
- Effects of Environmental Stressors on Livestock
- Ecology and biodiversity studies
- Agroforestry and silvopastoral systems
- Genetic and phenotypic traits in livestock
- Plant and soil sciences
- Animal Ecology and Behavior Studies
- Microbial infections and disease research
- Sustainable Agricultural Systems Analysis
- Coccidia and coccidiosis research
- Environmental and Cultural Studies in Latin America and Beyond
- Global Trade and Competitiveness
- Animal Nutrition and Physiology
- Comparative Animal Anatomy Studies
- Helminth infection and control
- Hormonal and reproductive studies
- Parasite Biology and Host Interactions
- Animal Genetics and Reproduction
Autonomous University of Yucatán
2015-2024
Universidad Nacional Autónoma de México
1996
Variations in progesterone (P4) and testosterone (T) levels the gonad of Octopus maya from Sisal Yucatan State, Mexico, were investigated by radioimmunoassays relation to four maturation stages (GMS) reproductive cycle, as represented two maturity indices (microscopic 'MiMI' macroscopic 'MaMI'). According GMS indices, season O. occurred February June. In females, P4 T displayed same pattern, with a tendency increase at time, although on average, had seven-fold higher concentrations than T....
Commercially available radioimmunoassays (RIA) with 125I-labeled hormones were adapted, developed and validated to quantify progesterone testosterone in gonad extracts of Octopus maya, considered an easily domesticated species potential aquaculture. Development the RIAs was divided into four phases: (1) extraction from gonads, (2) preparation for RIA, (3) standards preparation, (4) RIA procedure. Hormones extracted twice 15 mL diethyl-ether each time. The recovered hormone solvent effect on...
Se identificaron los parásitos gastrointestinales y ectoparásitos presentes en venados cola blanca (Odocoileus virginianus), pecarí de collar (Pecari tajacu) venado temazate (Mazama americana) condiciones vida libre cautiverio el trópico mexicano. obtuvieron muestras fecales 12 ungulados que se cazaron para fines subsistencia 55 cautiverio. Las excremento analizaron mediante las pruebas Flotación Centrifugada McMaster conocer géneros órdenes afectan a ungulados; así como la excreción huevos...
The ovarian activity of Agouti paca was characterized by hormonal profiles and structures. Samples blood were taken from eight females (seven adults one juvenile) at the breeding grounds Facultad de Medicina Veterinaria y Zootecnia in Yucatśn, Mexico. Sampling lasted approximately two months done every three six days. Blood collected anesthetized animals, levels progesterone (P4) 17 beta estradiol (E2) analized radioimmunoassay technique. Macroscopic microscopic analyses carried out ovaries...
Summary Objective: to evaluate voluntary intake of four forage species by collared peccary (Pecari tajacu) under confinement. Methods: peccaries underwent a consumption test assess their preference among forages (Leucaena leucocephala, Guazuma ulmifolia, Brosimum alicastrum and Pennisetum purpureum). The experiment was divided into two phases. first consisted an adaptation period 4 days during which they were offered 1 kg each in different feeders for hours, then removing weighing the...
A production function was estimated which relates beef and milk (Y), produced from feed concentrate (X 1 ), the number of cows in 2 ) labor 3 twenty dual purpose cattle farms eastern Yucatan State. From data provided by producers means feedback forms, a primary matrix generated, analyzed through least squares so as to estimate function. The model best adjusts input/output relation can be expressed Log Y = 253.04 - 357.32 X + 908.75 713.83 3. There is no need increase amount production, but...
El trabajo tuvo como objetivos identificar las especies de fauna silvestre que afectan los cultivos en el Valle Tenza y probar cuatro tratamientos no letales para proteger maíz. La identificación se efectuó durante cinco meses del año 2014. Se aplicaron 150 encuestas a campesinos municipios por método bola nieve, utilizaron 10 trampas Tomahawk 30 Sherman, cámaras digitales rastreo. prueba protección medio la aplicación base repelentes, municipio Capilla, octubre 2014 enero 2015, antes...
RESUMEN El objetivo fue evaluar la sustentabilidad de dos sistemas producción ovinos pelo en el estado Yucatán año 2011, utilizando Marco Evaluación Sistemas Manejo incorporando Indicadores Sustentabilidad. Se describen los datos prediales cada sistema, se aplicó una cedula entrevista a encargados sistema: primero denominado Acapulco y segundo San Francisco, realizó consulta campesino empírico experto conservación diversidad tipos vegetación Yucatán, también utilizó técnica observación...
Se obtuvieron excretas de venado cola blanca (Odocoileus virginianus) en cautiverio dentro unidades manejo para la conservación vida silvestre, ubicadas Mérida y Ticul, Yucatán, México, medir las concentraciones los metabolitos testosterona, progesterona estrógeno con técnica radioinmunoanálisis se relacionaron mediante índices. detectables 3 analizaron índices teoría del valor predictivo. Los /testosterona —ambos a dilución 1:2 dilución1:20/1:2, respectivamente— tuvieron mayor eficiencia...
Se realizo un estudio con el objetivo de caracterizar tipo entrenamineto y analizar los cambios cardiovasculares, respiratorios, endocrinos metabolicos que presenta caballo Criollo Chileno durante ejercicios entrenamiento habitual en criaderos, previo al peridodo competencias. Para determinar nivel esfuerzo se caracterizo la corrida segun tiempos, tipos distancia, para lo cual midio cancha cronometro tiempo ejercicio. registraron frecuencia cardiaca, respiratoria extrajeron muestras sangre...
The objective was to evaluate the efficiency of allocation sex white-tailed deer adults in reproductive and non-reproductive periods, by measuring levels proportion metabolites androgens, estrogens fecal progestins morphometric measurements excreta, subject weather for 0, 10, 20 30 days. Deer samples were collected three farms Yucatan State. Each sample identified animal sex. Values width, length, length/width average pellet volume, analysis applied fuzzy clustering. Fecal steroid estimated...
The objectives of this research were to determine the genera gastrointestinal parasites Pecari tajacu in captivity; estimate prevalence parasitosis, measure number coccidial oocysts and nematode eggs per gram feces, evaluate relationship between egg excretion.The was descriptive longitudinal with wild animals captivity.The study site "Xmatkuil" Wildlife Conservation Management Unit, Mérida, Yucatán, Mexico.The duration one year.Fecal samples collected from rectum confinement every month for...
Se realizó una revisión de literatura sobre la importancia los recursos genéticos animales y las estrategias para su conservación. reconoce pérdida material biológico reducción en variabilidad genética. Las conservación deben consistir realización encuestas, determinación poblaciones animales, caracterización fenotípica genotípica ellos el manejo variación La puede ser in situ o ex situ. Con respecto a segunda forma se revisan aspectos criopreservación del genético cual tiene amplias perspectivas.
El objetivo del trabajo fue caracterizar la cacería de venados O. virginianus y M. americana en tres comunidades rurales municipio Tzucacab, Yucatán, México. Se utilizó técnica muestreo bola nieve para identificar a los campesinos/cazadores, con ellos se aplicó encuesta, entrevista abierta profundidad, observación participativa el registro datos biométricos ejemplares cazados. Los resultados mostraron que principal es batida. La cantidad cazadores batida fluctúa entre 3 14, esta actividad...
The objective of the current study was to evaluate preference consumption four silage formulations, and their effect preferred on ovarian activity adult collared peccaries subjected 35 days ad libitum feed intake. In first experiment, 12 adults Pecari tajacu that are non-pregnant females were used which they offered mixtures, measure preference, through a 4 x Latin square design. second five diet with most favorite silage, pumpkin, corn, others consumed corn pumpkin. blood progesterone...
The objective was to characterize the levels of progesterone (P4) and 17b estradiol (E-17b) in blood 11 Pecari tajacu adult females captivity. were presence males but separated by a wire mesh. Blood samples taken every 6 days during 3 months. estimation steroid hormones carried out radioimmunoassay solid phase. Hormonal profiles plotted against time, determine duration each ovarian cycle number cycles. Nine animals showed estrous 2 did not. average 26.8±4.8 days. concentration P4 luteal...